jquery autocomplete suggest item can't select using keyboard arrow key - javascript

this code work perfectly but i can't able to select a item from the suggest list using keyboard up and down key only can select using mouse what's the problem?
please help someone :/ :/ :/
https://jsfiddle.net/g60wc776/
/********************************************************************************
/*
* triggeredAutocomplete (jQuery UI autocomplete widget)
* 2012 by Hawkee.com (hawkee#gmail.com)
*
* Version 1.4.5
*
* Requires jQuery 1.7 and jQuery UI 1.8
*
* Dual licensed under MIT or GPLv2 licenses
* http://en.wikipedia.org/wiki/MIT_License
* http://en.wikipedia.org/wiki/GNU_General_Public_License
*
*/
;(function ( $, window, document, undefined ) {
$.widget("ui.triggeredAutocomplete", $.extend(true, {}, $.ui.autocomplete.prototype, {
options: {
trigger: "#",
allowDuplicates: true
},
_create:function() {
var self = this;
this.id_map = new Object();
this.stopIndex = -1;
this.stopLength = -1;
this.contents = '';
this.cursorPos = 0;
/** Fixes some events improperly handled by ui.autocomplete */
this.element.bind('keydown.autocomplete.fix', function (e) {
switch (e.keyCode) {
case $.ui.keyCode.ESCAPE:
self.close(e);
e.stopImmediatePropagation();
break;
case $.ui.keyCode.UP:
case $.ui.keyCode.DOWN:
if (!self.menu.element.is(":visible")) {
e.stopImmediatePropagation();
}
}
});
// Check for the id_map as an attribute. This is for editing.
var id_map_string = this.element.attr('id_map');
if(id_map_string) this.id_map = jQuery.parseJSON(id_map_string);
this.ac = $.ui.autocomplete.prototype;
this.ac._create.apply(this, arguments);
this.updateHidden();
// Select function defined via options.
this.options.select = function(event, ui) {
var contents = self.contents;
var cursorPos = self.cursorPos;
// Save everything following the cursor (in case they went back to add a mention)
// Separate everything before the cursor
// Remove the trigger and search
// Rebuild: start + result + end
var end = contents.substring(cursorPos, contents.length);
var start = contents.substring(0, cursorPos);
start = start.substring(0, start.lastIndexOf(self.options.trigger));
var top = self.element.scrollTop();
this.value = start + self.options.trigger+ui.item.label+' ' + end;
self.element.scrollTop(top);
// Create an id map so we can create a hidden version of this string with id's instead of labels.
self.id_map[ui.item.label] = ui.item.value;
self.updateHidden();
/** Places the caret right after the inserted item. */
var index = start.length + self.options.trigger.length + ui.item.label.length + 2;
if (this.createTextRange) {
var range = this.createTextRange();
range.move('character', index);
range.select();
} else if (this.setSelectionRange) {
this.setSelectionRange(index, index);
}
return false;
};
// Don't change the input as you browse the results.
this.options.focus = function(event, ui) { return false; }
this.menu.options.blur = function(event, ui) { return false; }
// Any changes made need to update the hidden field.
this.element.focus(function() { self.updateHidden(); });
this.element.change(function() { self.updateHidden(); });
},
// If there is an 'img' then show it beside the label.
_renderItem: function( ul, item ) {
if(item.img != undefined) {
return $( "<li></li>" )
.data( "item.autocomplete", item )
.append( "<a>" + "<img src='" + item.img + "' /><span>"+item.label+"</span></a>" )
.appendTo( ul );
}
else {
return $( "<li></li>" )
.data( "item.autocomplete", item )
.append( $( "<a></a>" ).text( item.label ) )
.appendTo( ul );
}
},
// This stops the input box from being cleared when traversing the menu.
_move: function( direction, event ) {
if ( !this.menu.element.is(":visible") ) {
this.search( null, event );
return;
}
if ( this.menu.first() && /^previous/.test(direction) ||
this.menu.last() && /^next/.test(direction) ) {
this.menu.deactivate();
return;
}
this.menu[ direction ]( event );
},
search: function(value, event) {
var contents = this.element.val();
var cursorPos = this.getCursor();
this.contents = contents;
this.cursorPos = cursorPos;
// Include the character before the trigger and check that the trigger is not in the middle of a word
// This avoids trying to match in the middle of email addresses when '#' is used as the trigger
var check_contents = contents.substring(contents.lastIndexOf(this.options.trigger) - 1, cursorPos);
var regex = new RegExp('\\B\\'+this.options.trigger+'([\\w\\-]+)');
if (contents.indexOf(this.options.trigger) >= 0 && check_contents.match(regex)) {
// Get the characters following the trigger and before the cursor position.
// Get the contents up to the cursortPos first then get the lastIndexOf the trigger to find the search term.
contents = contents.substring(0, cursorPos);
var term = contents.substring(contents.lastIndexOf(this.options.trigger) + 1, contents.length);
// Only query the server if we have a term and we haven't received a null response.
// First check the current query to see if it already returned a null response.
if(this.stopIndex == contents.lastIndexOf(this.options.trigger) && term.length > this.stopLength) { term = ''; }
if(term.length > 0) {
// Updates the hidden field to check if a name was removed so that we can put them back in the list.
this.updateHidden();
return this._search(term);
}
else this.close();
}
},
// Slightly altered the default ajax call to stop querying after the search produced no results.
// This is to prevent unnecessary querying.
_initSource: function() {
var self = this, array, url;
if ( $.isArray(this.options.source) ) {
array = this.options.source;
this.source = function( request, response ) {
response( $.ui.autocomplete.filter(array, request.term) );
};
} else if ( typeof this.options.source === "string" ) {
url = this.options.source;
this.source = function( request, response ) {
if ( self.xhr ) {
self.xhr.abort();
}
self.xhr = $.ajax({
url: url,
data: request,
dataType: 'json',
success: function(data) {
if(data != null) {
response($.map(data, function(item) {
if (typeof item === "string") {
label = item;
}
else {
label = item.label;
}
// If the item has already been selected don't re-include it.
if(!self.id_map[label] || self.options.allowDuplicates) {
return item
}
}));
self.stopLength = -1;
self.stopIndex = -1;
}
else {
// No results, record length of string and stop querying unless the length decreases
self.stopLength = request.term.length;
self.stopIndex = self.contents.lastIndexOf(self.options.trigger);
self.close();
}
}
});
};
} else {
this.source = this.options.source;
}
},
destroy: function() {
$.Widget.prototype.destroy.call(this);
},
// Gets the position of the cursor in the input box.
getCursor: function() {
var i = this.element[0];
if(i.selectionStart) {
return i.selectionStart;
}
else if(i.ownerDocument.selection) {
var range = i.ownerDocument.selection.createRange();
if(!range) return 0;
var textrange = i.createTextRange();
var textrange2 = textrange.duplicate();
textrange.moveToBookmark(range.getBookmark());
textrange2.setEndPoint('EndToStart', textrange);
return textrange2.text.length;
}
},
// Populates the hidden field with the contents of the entry box but with
// ID's instead of usernames. Better for storage.
updateHidden: function() {
var trigger = this.options.trigger;
var top = this.element.scrollTop();
var contents = this.element.val();
for(var key in this.id_map) {
var find = trigger+key;
find = find.replace(/[^a-zA-Z 0-9#]+/g,'\\$&');
var regex = new RegExp(find, "g");
var old_contents = contents;
contents = contents.replace(regex, trigger+'['+this.id_map[key]+']');
if(old_contents == contents) delete this.id_map[key];
}
$(this.options.hidden).val(contents);
this.element.scrollTop(top);
}
}));
})( jQuery, window , document );
$('#inputbox').triggeredAutocomplete({
hidden: '#hidden_inputbox',
source: [
"Asp",
"BASIC",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
],
trigger: "#"
});
<textarea id='inputbox' style='width: 400px; height: 90px;'></textarea>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>

Related

Select mutiple options from jquery autocomplete with checkboxes

I am working with jquery autocomplete .
I am trying following code
Html
<textarea class="search-element"></textarea>
Script
var data = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C++",
"Clojure",
"COBOL",
"ColdFusion"
];
$(function () {
var $this;
var singleSelectOptions = {
source: function (request, response) {
response($.map(data, function (item) {
return {
label: item,
}
}));
},
select: function (event, ui) {
$($this).autocomplete("close");
$($this).val($($this).val() + '\n' + ui.label)
},
minLength: 0,
open: function () {
$("ul.ui-menu").width($(this).innerWidth());
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}
$(document).find('textarea[class*="search-element"]').live('keydown', function () {
$($this).autocomplete(singleSelectOptions);
}).live('focus', function () {
$this = $(this);
var text = $this.val();
if (text == '') {
$($this).autocomplete(singleSelectOptions);
$($this).autocomplete("search");
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});
})
By using this code I can select only one option at a time
but i need to select multiple options using checkbox
Right now my result is showing like this
But I want result as follows and when we check box then autocomplete should not be close and selected options should be fill in related textarea with comma separation and when we uncheck checkbox then that option should be remove from textarea. And I can update text of textarea.
Here is my fiddle
I have tried following code and my goal is achieved with this.
Html
<textarea class="multiselect-element"></textarea>
Script
var data = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C++",
"Clojure",
"COBOL",
"ColdFusion"
];
function split(val) {
return val.split(/,\s*/);
}
function extractLast(term) {
return split(term).pop();
}
function bindAutoComplete(ele, options) {
var text = ele.val();
text = text == null || text == undefined ? "" : text;
$(ele).autocomplete(options).data("autocomplete")._renderItem = function (ul, item) {
var checked = (text.indexOf(item.label + ', ') > -1 ? 'checked' : '');
return $("<li></li>")
.data("item.autocomplete", item)
.append('<input type="checkbox"' + checked + '/>' + item.label + '')
.appendTo(ul);
};
}
$(function () {
var $this;
var multiSelectOptions = {
minLength: 0,
source: function (request, response) {
response($.map(data, function (item) {
return {
label: item
}
}));
},
focus: function () {
// prevent value inserted on focus
//$($this).autocomplete("search");
return false;
},
select: function (event, ui) {
var text = $this.val();
text = text == null || text == undefined ? "" : text;
var checked = (text.indexOf(ui.item.value + ', ') > -1 ? 'checked' : '');
if (checked == 'checked') {
this.value = this.value.replace(ui.item.value + ', ', '')
}
else {
var terms = split(this.value);
// remove the current input
terms.pop();
// add the selected item
terms.push(ui.item.value);
// add placeholder to get the comma-and-space at the end
terms.push("");
this.value = terms.join(", ");
}
return false;
},
open: function () {
$("ul.ui-menu").width($(this).innerWidth());
}
}
$(document).find('textarea[class*="multiselect-element"]').live('keydown', function () {
bindAutoComplete($this, multiSelectOptions);
}).live('focus', function () {
$this = $(this);
var text = $this.val();
bindAutoComplete($this, multiSelectOptions);
$($this).autocomplete("search");
})
})
Here is my working fiddle
http://www.jqueryscript.net/demo/Multi-Select-Autocomplete-Dropdown-Plugin-For-jQuery-MSelectDialogBox/
see --> reffer to second demo

Jquery Autocomplete not supported by keyboard

Autocomplete is not working for keyboard keys but it is working for mouse.i couldnot select item by arrow keys and enter key.
Here is my code. please suggest me any idea. and how to change my selected item background colour in input field?
var triggered = false;
var trigger = "#";
jQuery(".inputbox").autocomplete({
source: function( request, response ) {
var term = request.term;
jQuery.ajax({
url: "/home/friends?q="+term,
dataType: "json",
success: function( data ) {
response( $.map( data, function( item ) {
// alert(item.value);
return {
label: item.name,
value: item.name }
}));
}
});
},
search: function() {
if (!triggered) {
return false;
}
},
select: function(event, ui) {
var text = this.value;
var pos = text.lastIndexOf(trigger);
this.value = text.substring(0, pos + trigger.length) +
ui.item.value;
triggered = false;
return false;
},
focus: function() { return false; },
delay: 0,
minLength: 0,
allowNewTags: false
}).bind("keyup", function() {
var text = this.value;
var len = text.length;
var last;
var query;
var index;
if (triggered) {
index = text.lastIndexOf(trigger);
query = text.substring(index + trigger.length);
$(this).autocomplete("search", query);
}
else if (len >= trigger.length) {
last = text.substring(len - trigger.length);
triggered = (last === trigger);
}
});
I recommend to use https://github.com/ghiden/angucomplete-alt. It have this feature implemented by default.

Autocomplete Textbox fetching suggestions from database?

I have created 2 autosuggest textboxes in which one is fetching data from server-side and another is fetching data from client-side.But server-side textbox is not working.Can anyone point out the error in my code.
Following is my HTML Code:
<html>
<link type="text/css" rel="stylesheet" media="all" href="jquery-ui-1.8.9.custom.css" />
<script type="text/javascript" src="jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="jquery-ui-1.8.9.custom.min.js"></script>
<script type="text/javascript" src="languages.js"></script>
<body>
<label for="languagesClientInput">Select Language(client-side): </label>
<input id="languagesClientInput" />
<br />
<label for="languagesServerInput">Select Language (server-side): </label>
<input id="languagesServerInput" />
</body>
</html>
Following is Js Code:
$(function() {
var languages = [
"C",
"C++",
"Core Java",
"Advance Java",
"PHP",
".NET",
"XML",
"HTML",
"Javascript",
"jQuery",
"JSON",
"Ajax",
"C#",
"ABC ALGOL",
"ADA",
"ABLE",
"COBOL",
"BLUE",
"Pearl",
"Python",
"Oracle",
"Haskell",
"BASIC",
"BeanShell",
"Bliss",
"BETA",
"GOTRAN",
"FORTRAN",
"Focal",
"Genie",
"GOAL",
"GROOVY",
"JOSS",
"JEAN",
"JOVIAL",
"JOY",
"Maple",
"MATLAB",
"MORTAN",
"MUMPS",
"Miranda",
"NetRexx",
"NPL",
"NXT-G"
];
$("#languagesClientInput").autocomplete( { source: languages });
$("#languagesServerInput").autocomplete( { source: "languages.php" });
});
Following is Php Code:
<?php
$searchTerm = $_GET['term'];
$languages = array(
"C",
"C++",
"Core Java",
"Advance Java",
"PHP",
".NET",
"XML",
"HTML",
"Javascript",
"jQuery",
"JSON",
"Ajax",
"C#",
"ABC ALGOL",
"ADA",
"ABLE",
"COBOL",
"BLUE",
"Pearl",
"Python",
"Oracle",
"Haskell",
"BASIC",
"BeanShell",
"Bliss",
"BETA",
"GOTRAN",
"FORTRAN",
"Focal",
"Genie",
"GOAL",
"GROOVY",
"JOSS",
"JEAN",
"JOVIAL",
"JOY",
"Maple",
"MATLAB",
"MORTAN",
"MUMPS",
"Miranda",
"NetRexx",
"NPL",
"NXT-G"
);
function filter($language) {
global $searchTerm;
return stripos($language, $searchTerm) !== false;
}
print(json_encode(array_values(array_filter($languages, "filter"))));
?>
The array_filter function fails. If you remove it you will get the data you need.
I actually think you have made a mistake there by writing array_filter instead of just filter to call the function you wrote above.
Run this command in MySQL database;
CREATE TABLE `tag` (
`id` int(20) NOT NULL auto_increment,
`name` varchar(50) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=10 ;
INSERT INTO `tag` (`id`, `name`) VALUES
(1, 'php'),
(2, 'php frameword'),
(3, 'php tutorial'),
(4, 'jquery'),
(5, 'ajax'),
(6, 'mysql'),
(7, 'wordpress'),
(8, 'wordpress theme'),
(9, 'xml');
index.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Auto Complete Input box</title>
<link rel="stylesheet" type="text/css" href="jquery.autocomplete.css" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.autocomplete.js"></script>
<script>
$(document).ready(function(){
$("#tag").autocomplete("autocomplete.php", {
selectFirst: true
});
});
</script>
</head>
<body>
<label>Tag:</label>
<input name="tag" type="text" id="tag" size="20"/>
</body>
</html>
autocomplete.php
<?php
$q=$_GET['q'];
$my_data=mysql_real_escape_string($q);
$mysqli=mysqli_connect('localhost','root','','autofield') or die("Database Error");
$sql="SELECT name FROM tag WHERE name LIKE '%$my_data%' ORDER BY name";
$result = mysqli_query($mysqli,$sql) or die(mysqli_error());
if($result)
{
while($row=mysqli_fetch_array($result))
{
echo $row['name']."\n";
}
}
?>
jquery.autocomplete.css
.ac_results {
padding: 0px;
border: 1px solid black;
background-color: white;
overflow: hidden;
z-index: 99999;
}
.ac_results ul {
width: 100%;
list-style-position: outside;
list-style: none;
padding: 0;
margin: 0;
}
.ac_results li {
margin: 0px;
padding: 2px 5px;
cursor: default;
display: block;
/*
if width will be 100% horizontal scrollbar will apear
when scroll mode will be used
*/
/*width: 100%;*/
font: menu;
font-size: 12px;
/*
it is very important, if line-height not setted or setted
in relative units scroll will be broken in firefox
*/
line-height: 16px;
overflow: hidden;
}
.ac_loading {
background: white url('indicator.gif') right center no-repeat;
}
.ac_odd {
background-color: #eee;
}
.ac_over {
background-color: #0A246A;
color: white;
}
jquery.autocomplete.js
/*
* jQuery Autocomplete plugin 1.1
*
* Copyright (c) 2009 Jörn Zaefferer
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* Revision: $Id: jquery.autocomplete.js 15 2009-08-22 10:30:27Z joern.zaefferer $
*/
;(function($) {
$.fn.extend({
autocomplete: function(urlOrData, options) {
var isUrl = typeof urlOrData == "string";
options = $.extend({}, $.Autocompleter.defaults, {
url: isUrl ? urlOrData : null,
data: isUrl ? null : urlOrData,
delay: isUrl ? $.Autocompleter.defaults.delay : 10,
max: options && !options.scroll ? 10 : 150
}, options);
// if highlight is set to false, replace it with a do-nothing function
options.highlight = options.highlight || function(value) { return value; };
// if the formatMatch option is not specified, then use formatItem for backwards compatibility
options.formatMatch = options.formatMatch || options.formatItem;
return this.each(function() {
new $.Autocompleter(this, options);
});
},
result: function(handler) {
return this.bind("result", handler);
},
search: function(handler) {
return this.trigger("search", [handler]);
},
flushCache: function() {
return this.trigger("flushCache");
},
setOptions: function(options){
return this.trigger("setOptions", [options]);
},
unautocomplete: function() {
return this.trigger("unautocomplete");
}
});
$.Autocompleter = function(input, options) {
var KEY = {
UP: 38,
DOWN: 40,
DEL: 46,
TAB: 9,
RETURN: 13,
ESC: 27,
COMMA: 188,
PAGEUP: 33,
PAGEDOWN: 34,
BACKSPACE: 8
};
// Create $ object for input element
var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass);
var timeout;
var previousValue = "";
var cache = $.Autocompleter.Cache(options);
var hasFocus = 0;
var lastKeyPressCode;
var config = {
mouseDownOnSelect: false
};
var select = $.Autocompleter.Select(options, input, selectCurrent, config);
var blockSubmit;
// prevent form submit in opera when selecting with return key
$.browser.opera && $(input.form).bind("submit.autocomplete", function() {
if (blockSubmit) {
blockSubmit = false;
return false;
}
});
// only opera doesn't trigger keydown multiple times while pressed, others don't work with keypress at all
$input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function(event) {
// a keypress means the input has focus
// avoids issue where input had focus before the autocomplete was applied
hasFocus = 1;
// track last key pressed
lastKeyPressCode = event.keyCode;
switch(event.keyCode) {
case KEY.UP:
event.preventDefault();
if ( select.visible() ) {
select.prev();
} else {
onChange(0, true);
}
break;
case KEY.DOWN:
event.preventDefault();
if ( select.visible() ) {
select.next();
} else {
onChange(0, true);
}
break;
case KEY.PAGEUP:
event.preventDefault();
if ( select.visible() ) {
select.pageUp();
} else {
onChange(0, true);
}
break;
case KEY.PAGEDOWN:
event.preventDefault();
if ( select.visible() ) {
select.pageDown();
} else {
onChange(0, true);
}
break;
// matches also semicolon
case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
case KEY.TAB:
case KEY.RETURN:
if( selectCurrent() ) {
// stop default to prevent a form submit, Opera needs special handling
event.preventDefault();
blockSubmit = true;
return false;
}
break;
case KEY.ESC:
select.hide();
break;
default:
clearTimeout(timeout);
timeout = setTimeout(onChange, options.delay);
break;
}
}).focus(function(){
// track whether the field has focus, we shouldn't process any
// results if the field no longer has focus
hasFocus++;
}).blur(function() {
hasFocus = 0;
if (!config.mouseDownOnSelect) {
hideResults();
}
}).click(function() {
// show select when clicking in a focused field
if ( hasFocus++ > 1 && !select.visible() ) {
onChange(0, true);
}
}).bind("search", function() {
// TODO why not just specifying both arguments?
var fn = (arguments.length > 1) ? arguments[1] : null;
function findValueCallback(q, data) {
var result;
if( data && data.length ) {
for (var i=0; i < data.length; i++) {
if( data[i].result.toLowerCase() == q.toLowerCase() ) {
result = data[i];
break;
}
}
}
if( typeof fn == "function" ) fn(result);
else $input.trigger("result", result && [result.data, result.value]);
}
$.each(trimWords($input.val()), function(i, value) {
request(value, findValueCallback, findValueCallback);
});
}).bind("flushCache", function() {
cache.flush();
}).bind("setOptions", function() {
$.extend(options, arguments[1]);
// if we've updated the data, repopulate
if ( "data" in arguments[1] )
cache.populate();
}).bind("unautocomplete", function() {
select.unbind();
$input.unbind();
$(input.form).unbind(".autocomplete");
});
function selectCurrent() {
var selected = select.selected();
if( !selected )
return false;
var v = selected.result;
previousValue = v;
if ( options.multiple ) {
var words = trimWords($input.val());
if ( words.length > 1 ) {
var seperator = options.multipleSeparator.length;
var cursorAt = $(input).selection().start;
var wordAt, progress = 0;
$.each(words, function(i, word) {
progress += word.length;
if (cursorAt <= progress) {
wordAt = i;
return false;
}
progress += seperator;
});
words[wordAt] = v;
// TODO this should set the cursor to the right position, but it gets overriden somewhere
//$.Autocompleter.Selection(input, progress + seperator, progress + seperator);
v = words.join( options.multipleSeparator );
}
v += options.multipleSeparator;
}
$input.val(v);
hideResultsNow();
$input.trigger("result", [selected.data, selected.value]);
return true;
}
function onChange(crap, skipPrevCheck) {
if( lastKeyPressCode == KEY.DEL ) {
select.hide();
return;
}
var currentValue = $input.val();
if ( !skipPrevCheck && currentValue == previousValue )
return;
previousValue = currentValue;
currentValue = lastWord(currentValue);
if ( currentValue.length >= options.minChars) {
$input.addClass(options.loadingClass);
if (!options.matchCase)
currentValue = currentValue.toLowerCase();
request(currentValue, receiveData, hideResultsNow);
} else {
stopLoading();
select.hide();
}
};
function trimWords(value) {
if (!value)
return [""];
if (!options.multiple)
return [$.trim(value)];
return $.map(value.split(options.multipleSeparator), function(word) {
return $.trim(value).length ? $.trim(word) : null;
});
}
function lastWord(value) {
if ( !options.multiple )
return value;
var words = trimWords(value);
if (words.length == 1)
return words[0];
var cursorAt = $(input).selection().start;
if (cursorAt == value.length) {
words = trimWords(value)
} else {
words = trimWords(value.replace(value.substring(cursorAt), ""));
}
return words[words.length - 1];
}
// fills in the input box w/the first match (assumed to be the best match)
// q: the term entered
// sValue: the first matching result
function autoFill(q, sValue){
// autofill in the complete box w/the first match as long as the user hasn't entered in more data
// if the last user key pressed was backspace, don't autofill
if( options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE ) {
// fill in the value (keep the case the user has typed)
$input.val($input.val() + sValue.substring(lastWord(previousValue).length));
// select the portion of the value not typed by the user (so the next character will erase)
$(input).selection(previousValue.length, previousValue.length + sValue.length);
}
};
function hideResults() {
clearTimeout(timeout);
timeout = setTimeout(hideResultsNow, 200);
};
function hideResultsNow() {
var wasVisible = select.visible();
select.hide();
clearTimeout(timeout);
stopLoading();
if (options.mustMatch) {
// call search and run callback
$input.search(
function (result){
// if no value found, clear the input box
if( !result ) {
if (options.multiple) {
var words = trimWords($input.val()).slice(0, -1);
$input.val( words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : "") );
}
else {
$input.val( "" );
$input.trigger("result", null);
}
}
}
);
}
};
function receiveData(q, data) {
if ( data && data.length && hasFocus ) {
stopLoading();
select.display(data, q);
autoFill(q, data[0].value);
select.show();
} else {
hideResultsNow();
}
};
function request(term, success, failure) {
if (!options.matchCase)
term = term.toLowerCase();
var data = cache.load(term);
// recieve the cached data
if (data && data.length) {
success(term, data);
// if an AJAX url has been supplied, try loading the data now
} else if( (typeof options.url == "string") && (options.url.length > 0) ){
var extraParams = {
timestamp: +new Date()
};
$.each(options.extraParams, function(key, param) {
extraParams[key] = typeof param == "function" ? param() : param;
});
$.ajax({
// try to leverage ajaxQueue plugin to abort previous requests
mode: "abort",
// limit abortion to this input
port: "autocomplete" + input.name,
dataType: options.dataType,
url: options.url,
data: $.extend({
q: lastWord(term),
limit: options.max
}, extraParams),
success: function(data) {
var parsed = options.parse && options.parse(data) || parse(data);
cache.add(term, parsed);
success(term, parsed);
}
});
} else {
// if we have a failure, we need to empty the list -- this prevents the the [TAB] key from selecting the last successful match
select.emptyList();
failure(term);
}
};
function parse(data) {
var parsed = [];
var rows = data.split("\n");
for (var i=0; i < rows.length; i++) {
var row = $.trim(rows[i]);
if (row) {
row = row.split("|");
parsed[parsed.length] = {
data: row,
value: row[0],
result: options.formatResult && options.formatResult(row, row[0]) || row[0]
};
}
}
return parsed;
};
function stopLoading() {
$input.removeClass(options.loadingClass);
};
};
$.Autocompleter.defaults = {
inputClass: "ac_input",
resultsClass: "ac_results",
loadingClass: "ac_loading",
minChars: 1,
delay: 400,
matchCase: false,
matchSubset: true,
matchContains: false,
cacheLength: 10,
max: 100,
mustMatch: false,
extraParams: {},
selectFirst: true,
formatItem: function(row) { return row[0]; },
formatMatch: null,
autoFill: false,
width: 0,
multiple: false,
multipleSeparator: ", ",
highlight: function(value, term) {
return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");
},
scroll: true,
scrollHeight: 180
};
$.Autocompleter.Cache = function(options) {
var data = {};
var length = 0;
function matchSubset(s, sub) {
if (!options.matchCase)
s = s.toLowerCase();
var i = s.indexOf(sub);
if (options.matchContains == "word"){
i = s.toLowerCase().search("\\b" + sub.toLowerCase());
}
if (i == -1) return false;
return i == 0 || options.matchContains;
};
function add(q, value) {
if (length > options.cacheLength){
flush();
}
if (!data[q]){
length++;
}
data[q] = value;
}
function populate(){
if( !options.data ) return false;
// track the matches
var stMatchSets = {},
nullData = 0;
// no url was specified, we need to adjust the cache length to make sure it fits the local data store
if( !options.url ) options.cacheLength = 1;
// track all options for minChars = 0
stMatchSets[""] = [];
// loop through the array and create a lookup structure
for ( var i = 0, ol = options.data.length; i < ol; i++ ) {
var rawValue = options.data[i];
// if rawValue is a string, make an array otherwise just reference the array
rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue;
var value = options.formatMatch(rawValue, i+1, options.data.length);
if ( value === false )
continue;
var firstChar = value.charAt(0).toLowerCase();
// if no lookup array for this character exists, look it up now
if( !stMatchSets[firstChar] )
stMatchSets[firstChar] = [];
// if the match is a string
var row = {
value: value,
data: rawValue,
result: options.formatResult && options.formatResult(rawValue) || value
};
// push the current match into the set list
stMatchSets[firstChar].push(row);
// keep track of minChars zero items
if ( nullData++ < options.max ) {
stMatchSets[""].push(row);
}
};
// add the data items to the cache
$.each(stMatchSets, function(i, value) {
// increase the cache size
options.cacheLength++;
// add to the cache
add(i, value);
});
}
// populate any existing data
setTimeout(populate, 25);
function flush(){
data = {};
length = 0;
}
return {
flush: flush,
add: add,
populate: populate,
load: function(q) {
if (!options.cacheLength || !length)
return null;
/*
* if dealing w/local data and matchContains than we must make sure
* to loop through all the data collections looking for matches
*/
if( !options.url && options.matchContains ){
// track all matches
var csub = [];
// loop through all the data grids for matches
for( var k in data ){
// don't search through the stMatchSets[""] (minChars: 0) cache
// this prevents duplicates
if( k.length > 0 ){
var c = data[k];
$.each(c, function(i, x) {
// if we've got a match, add it to the array
if (matchSubset(x.value, q)) {
csub.push(x);
}
});
}
}
return csub;
} else
// if the exact item exists, use it
if (data[q]){
return data[q];
} else
if (options.matchSubset) {
for (var i = q.length - 1; i >= options.minChars; i--) {
var c = data[q.substr(0, i)];
if (c) {
var csub = [];
$.each(c, function(i, x) {
if (matchSubset(x.value, q)) {
csub[csub.length] = x;
}
});
return csub;
}
}
}
return null;
}
};
};
$.Autocompleter.Select = function (options, input, select, config) {
var CLASSES = {
ACTIVE: "ac_over"
};
var listItems,
active = -1,
data,
term = "",
needsInit = true,
element,
list;
// Create results
function init() {
if (!needsInit)
return;
element = $("<div/>")
.hide()
.addClass(options.resultsClass)
.css("position", "absolute")
.appendTo(document.body);
list = $("<ul/>").appendTo(element).mouseover( function(event) {
if(target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') {
active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event));
$(target(event)).addClass(CLASSES.ACTIVE);
}
}).click(function(event) {
$(target(event)).addClass(CLASSES.ACTIVE);
select();
// TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus
input.focus();
return false;
}).mousedown(function() {
config.mouseDownOnSelect = true;
}).mouseup(function() {
config.mouseDownOnSelect = false;
});
if( options.width > 0 )
element.css("width", options.width);
needsInit = false;
}
function target(event) {
var element = event.target;
while(element && element.tagName != "LI")
element = element.parentNode;
// more fun with IE, sometimes event.target is empty, just ignore it then
if(!element)
return [];
return element;
}
function moveSelect(step) {
listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE);
movePosition(step);
var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE);
if(options.scroll) {
var offset = 0;
listItems.slice(0, active).each(function() {
offset += this.offsetHeight;
});
if((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) {
list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight());
} else if(offset < list.scrollTop()) {
list.scrollTop(offset);
}
}
};
function movePosition(step) {
active += step;
if (active < 0) {
active = listItems.size() - 1;
} else if (active >= listItems.size()) {
active = 0;
}
}
function limitNumberOfItems(available) {
return options.max && options.max < available
? options.max
: available;
}
function fillList() {
list.empty();
var max = limitNumberOfItems(data.length);
for (var i=0; i < max; i++) {
if (!data[i])
continue;
var formatted = options.formatItem(data[i].data, i+1, max, data[i].value, term);
if ( formatted === false )
continue;
var li = $("<li/>").html( options.highlight(formatted, term) ).addClass(i%2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0];
$.data(li, "ac_data", data[i]);
}
listItems = list.find("li");
if ( options.selectFirst ) {
listItems.slice(0, 1).addClass(CLASSES.ACTIVE);
active = 0;
}
// apply bgiframe if available
if ( $.fn.bgiframe )
list.bgiframe();
}
return {
display: function(d, q) {
init();
data = d;
term = q;
fillList();
},
next: function() {
moveSelect(1);
},
prev: function() {
moveSelect(-1);
},
pageUp: function() {
if (active != 0 && active - 8 < 0) {
moveSelect( -active );
} else {
moveSelect(-8);
}
},
pageDown: function() {
if (active != listItems.size() - 1 && active + 8 > listItems.size()) {
moveSelect( listItems.size() - 1 - active );
} else {
moveSelect(8);
}
},
hide: function() {
element && element.hide();
listItems && listItems.removeClass(CLASSES.ACTIVE);
active = -1;
},
visible : function() {
return element && element.is(":visible");
},
current: function() {
return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]);
},
show: function() {
var offset = $(input).offset();
element.css({
width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(),
top: offset.top + input.offsetHeight,
left: offset.left
}).show();
if(options.scroll) {
list.scrollTop(0);
list.css({
maxHeight: options.scrollHeight,
overflow: 'auto'
});
if($.browser.msie && typeof document.body.style.maxHeight === "undefined") {
var listHeight = 0;
listItems.each(function() {
listHeight += this.offsetHeight;
});
var scrollbarsVisible = listHeight > options.scrollHeight;
list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight );
if (!scrollbarsVisible) {
// IE doesn't recalculate width when scrollbar disappears
listItems.width( list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")) );
}
}
}
},
selected: function() {
var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE);
return selected && selected.length && $.data(selected[0], "ac_data");
},
emptyList: function (){
list && list.empty();
},
unbind: function() {
element && element.remove();
}
};
};
$.fn.selection = function(start, end) {
if (start !== undefined) {
return this.each(function() {
if( this.createTextRange ){
var selRange = this.createTextRange();
if (end === undefined || start == end) {
selRange.move("character", start);
selRange.select();
} else {
selRange.collapse(true);
selRange.moveStart("character", start);
selRange.moveEnd("character", end);
selRange.select();
}
} else if( this.setSelectionRange ){
this.setSelectionRange(start, end);
} else if( this.selectionStart ){
this.selectionStart = start;
this.selectionEnd = end;
}
});
}
var field = this[0];
if ( field.createTextRange ) {
var range = document.selection.createRange(),
orig = field.value,
teststring = "<->",
textLength = range.text.length;
range.text = teststring;
var caretAt = field.value.indexOf(teststring);
field.value = orig;
this.selection(caretAt, caretAt + textLength);
return {
start: caretAt,
end: caretAt + textLength
}
} else if( field.selectionStart !== undefined ){
return {
start: field.selectionStart,
end: field.selectionEnd
}
}
};
})(jQuery);
Download jquery.min.js and rename it to jquery.js
Now open index.php in your localhost/server and test it. Follow the similar method with your wordlist.
You don't need the array_values function. This worked for me:
// languages.php
<?php
function filter($language) {
global $searchTerm;
return stripos( $language, $searchTerm ) !== false;
}
$searchTerm = $_GET['term'];
$languages = array(
"C",
"C++",
"Core Java",
"Advance Java",
"PHP",
".NET",
"XML",
"HTML",
"Javascript",
"jQuery",
"JSON",
"Ajax",
"C#",
"ABC ALGOL",
"ADA",
"ABLE",
"COBOL",
"BLUE",
"Pearl",
"Python",
"Oracle",
"Haskell",
"BASIC",
"BeanShell",
"Bliss",
"BETA",
"GOTRAN",
"FORTRAN",
"Focal",
"Genie",
"GOAL",
"GROOVY",
"JOSS",
"JEAN",
"JOVIAL",
"JOY",
"Maple",
"MATLAB",
"MORTAN",
"MUMPS",
"Miranda",
"NetRexx",
"NPL",
"NXT-G"
);
$jsonData = array_filter( $languages, "filter" );
print( json_encode( $jsonData ) );
?>

Javascript “confirm” in IE6 and IE7

Why doesn't this code work in IE6 or IE7?
$('a').click(
function()
{
var urlIsExternal = true;
var urlMedicareDir = '/medicare/';
var urlMedicareHost = 'health.healthcare.com';
var urlMedicare = 'https://' + urlMedicareHost + urlMedicareDir;
var urlAppsHost = 'apps.healthcare.com';
var urlCurrent = String( window.location );
var urlCurrentPrefix = urlCurrent.substring( 0, urlMedicare.length );
var urlCurrentURL = $.url( urlCurrent );
var urlClicked = $(this).attr('href');
var urlClickedURL = $.url( $(this).attr('href') );
var urlHost = urlClickedURL.attr('host');
if( !urlHost.length )
{
urlHost = urlCurrentURL.attr('host');
}
var urlConfirmMessage = 'You are now leaving the Medicare website.';
if( urlCurrentPrefix == urlMedicare )
{
if( urlClicked.substring( 0, 1 ) == '/' ) // starts with slash
{
if( urlClicked.substring( 0, urlMedicareDir.length ) == urlMedicareDir )
{
urlIsExternal = false;
}
}
if( urlClicked.substring( 0, urlMedicare.length ) == urlMedicare )
{
urlIsExternal = false;
}
if (
urlClicked.substring( 0, 1 ) != '/' &&
urlClicked.substring( 0, 4 ) != 'http' &&
urlClicked.substring( 0, 4 ) != 'file'
)
{
urlIsExternal = false;
}
if( urlAppsHost == urlHost )
{
urlIsExternal = false;
}
if( urlClicked.substring(urlClicked.length-4) == '.pdf' )
{
urlIsExternal = false;
}
}
else
{
urlIsExternal = false;
}
if( urlIsExternal )
{
if( confirm( urlConfirmMessage ) )
{
window.open( urlClicked );
return false;
}
else
{
return false;
}
}
else
{
return true;
}
}
);
For some reason when the links are clicked in IE6 or IE7, they do not direct the user to the link and it does not prompt a confirm dialog. It should prompt a confirm dialog, but for some reason, it is not.
I don't think you're preventing the default action of the anchor ("a").
You should start $('a').click( function( event ) { so that when you get here:
if( urlIsExternal ) {
// This tells jQuery to NOT follow the hyperlink
event.preventDefault();
if( confirm( urlConfirmMessage ) ) {
window.open( urlClicked );
}
}
However, what's really missing is that this code needs to run after the document has loaded. So you just need to wrap your function with
$(document).ready(function(){
$('a').click( function( event ) {
/* your code */
}
});
Without the call to $(document).ready(), the JavaScript runs before the body of the document is rendered, so it doesn't find any <a> tags to which it can attach the click event.
It seems that if the user clicks on a link that has an href starting with some value other than the current host, you want offer a confirm dialog. That is a realy annoying strategy, why doesn't the user know before clicking on the link that it wil take them elsewhere?
Anyway, a simple version of what you are trying to do is:
function showPrompt() {
return confirm('Do you really want to leaving ' + window.location.host +
'?\nPress OK to continue or Cancel to stay on this page.');
}
window.onload = function() {
// The links collection is live and available as a property of window
var link, links = document.links;
// Include criteria for host, hostName, protocol, whatever as required
var re = new RegExp(window.location.host || 'no host');
for (var i=0, iLen=links.length; i<iLen; i++) {
link = links[i];
// Only add the listener to links that need it
if (!re.test(link.href)) {
// Add the listener however you want, this way is simple and robust
link.onclick = showPrompt;
}
}
}

stand-alone lazy loading images (no framework based)

I look after a site which by nature has to load quite a lot of images and content on the page. We have decreased the number of elements and graphical layout images as much as we can, so we are now looking at ways to increase the page load in the browser.
Does anyone know any code for lazy loading images that doesn't require a framework such as jQuery?
Here is my own. Have Fun.
Tested: IE 5.5+, FF 2+, Chrome, Opera 9.6+
Usage:
your lazyloaded images should have their real src in a thumb attribute
Just include the javascript file inline or externally.
If you don't want to use it on your entire page, you can do:
LazyImg().destroy(); // stop global fetching
LazyImg("watch-only-this-div");
Note: when you include the file a global instance is already created watchin the whole document. You need to stop that first and start you own instance.
set a custom offset for prefetching (how far below the fold the image should be fetched)
// watch the whole document
// prefetch offset: 300px
LazyImg(document, 300);
Code:
//
// LAZY Loading Images
//
// Handles lazy loading of images in one or more targeted divs,
// or in the entire page. It also keeps track of scrolling and
// resizing events, and removes itself if the work is done.
//
// Licensed under the terms of the MIT license.
//
// (c) 2010 Balázs Galambosi
//
(function(){
// glocal variables
var window = this,
instances = {},
winH;
// cross browser event handling
function addEvent( el, type, fn ) {
if ( window.addEventListener ) {
el.addEventListener( type, fn, false );
} else if ( window.attachEvent ) {
el.attachEvent( "on" + type, fn );
} else {
var old = el["on" + type];
el["on" + type] = function() { old(); fn(); };
}
}
// cross browser event handling
function removeEvent( el, type, fn ) {
if ( window.removeEventListener ) {
el.removeEventListener( type, fn, false );
} else if ( window.attachEvent ) {
el.detachEvent( "on" + type, fn );
}
}
// cross browser window height
function getWindowHeight() {
if ( window.innerHeight ) {
winH = window.innerHeight;
} else if ( document.documentElement.clientHeight ) {
winH = document.documentElement.clientHeight;
} else if ( document.body && document.body.clientHeight ) {
winH = document.body.clientHeight;
} else { // fallback:
winH = 10000; // just load all the images
}
return winH;
}
// getBoundingClientRect alternative
function findPos(obj) {
var top = 0;
if (obj && obj.offsetParent) {
do {
top += obj.offsetTop || 0;
top -= obj.scrollTop || 0;
} while (obj = obj.offsetParent); //
return { "top" : top };
}
}
// top position of an element
var getTopPos = (function() {
var dummy = document.createElement("div");
if ( dummy.getBoundingClientRect ) {
return function( el ) {
return el.$$top || el.getBoundingClientRect().top;
};
} else {
return function( el ) {
return el.$$top || findPos( el ).top;
};
}
})();
// sorts images by their vertical positions
function img_sort( a, b ) {
return getTopPos( a ) - getTopPos( b );
}
// let's just provide some interface
// for the outside world
var LazyImg = function( target, offset ) {
var imgs, // images array (ordered)
last, // last visible image (index)
id, // id of the target element
self; // this instance
offset = offset || 200; // for prefetching
if ( !target ) {
target = document;
id = "$document";
} else if ( typeof target === "string" ) {
id = target;
target = document.getElementById( target );
} else {
id = target.id || "$undefined";
}
// return if this instance already exists
if ( instances[id] ) {
return instances[id];
}
// or make a new instance
self = instances[id] = {
// init & reset
init: function() {
imgs = null;
last = 0;
addEvent( window, "scroll", self.fetchImages );
self.fetchImages();
return this;
},
destroy: function() {
removeEvent( window, "scroll", self.fetchImages );
delete instances[id];
},
// fetches images, starting at last (index)
fetchImages: function() {
var img, temp, len, i;
// still trying to get the target
target = target || document.getElementById( id );
// if it's the first time
// initialize images array
if ( !imgs && target ) {
temp = target.getElementsByTagName( "img" );
if ( temp.length ) {
imgs = [];
len = temp.length;
} else return;
// fill the array for sorting
for ( i = 0; i < len; i++ ) {
img = temp[i];
if ( img.nodeType === 1 && img.getAttribute("thumb") ) {
// store them and cache current
// positions for faster sorting
img.$$top = getTopPos( img );
imgs.push( img );
}
}
imgs.sort( img_sort );
}
// loop through the images
while ( imgs[last] ) {
img = imgs[last];
// delete cached position
if ( img.$$top ) img.$$top = null;
// check if the img is above the fold
if ( getTopPos( img ) < winH + offset ) {
// then change the src
img.src = img.getAttribute("thumb");
last++;
}
else return;
}
// we've fetched the last image -> finished
if ( last && last === imgs.length ) {
self.destroy();
}
}
};
return self.init();
};
// initialize
getWindowHeight();
addEvent( window, "load", LazyImg().fetchImages );
addEvent( window, "resize", getWindowHeight );
LazyImg();
window.LazyImg = LazyImg;
}());
"thumb" does not validate when using XHTML. I changed it to "title" and it seems to be working ok.

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