I'm using this: http://docs.jquery.com/UI/Autocomplete
I'm initializing a text box like this (partial code):
$('#foo').autocomplete
{
source: function()
{
// How to get the id of the element?
}
}
In the source callback, I need to know what the id is of the current element. In this example, it's obviously foo; in the real application, the selector is dynamically assigned so I don't know what the id is.
I looked at the following:
console.debug($(this)); // displays [a.widget.a]
console.debug($(this.id)); // displays []
console.debug($(this).attr('id')); // displays undefined
How to get the id of the element?
Rather than assigning variables names to all the inputs you want autocomplete on, you can use:
$('#some_id').autocomplete {
source: function() {
var element = this.element[0];
var element_id = this.element[0].id;
}
}
You could just use...
var element = $('#one');
element.autocomplete
{
source: function()
{
var id = element.id;
}
}
Related
I'm new to JQuery and I noticed this line $('#DivID [type=checkbox]') and I was wondering if I can also find the select or option tags using the same method.
Update: I have a div that has more than more tag, I'm trying to get the DropDownList/Select that it's value's just changed.
Update2 I'm using InstaFilta a JQuery plugin that filter the content based on a customized attribute appended to my content tags. Below is a snippet for the function that do the same when working with CheckBoxes, and I'm trying to edit it to work with DropDownLists/Select controls.
var $ex10Checkboxes = $('#ex10 [type=checkbox]');
$ex10Checkboxes.on('change', function() {
var checkedCategories = [];
$ex10Checkboxes.each(function() {
if ($(this).prop('checked')) {
checkedCategories.push($(this).val());
}
});
ex10.filterCategory(checkedCategories, true);
});
You would find the option tags as follows:
$("#DivID option")
Likewise the select tags:
$("#DivID select")
You can then iterate over the returned objects to inspect the individual elements:
var foo = $("#DivID option");
var i;
for (i = 0; i < foo.length; i += 1) {
console.log(foo[i].val()); //or whatever
}
To find the selected element you could check out this question:
$("#DivID option:selected")
I would suggest checking out the JQuery page on Selectors JQuery Selectors
I have the following fiddle:
http://jsfiddle.net/XpAk5/63/
The IDs increment appropriately. For the first instance. The issue is when I try to add a sport, while it duplicates, it doesn't duplicate correctly. The buttons to add are not creating themselves correctly. For instance, if I choose a sport, then fill in a position, and add another position, that's all fine (for the first instance). But when I click to add another sport, it shows 2 positions right away, and the buttons aren't duplicating correctly. I think the error is in my HTML, but not sure. Here is the JS I am using to duplicate the sport:
$('#addSport').click(function(){
//increment the value of our counter
$('#kpSport').val(Number($('#kpSport').val()) + 1);
//clone the first .item element
var newItem = $('div.kpSports').first().clone();
//recursively set our id, name, and for attributes properly
childRecursive(newItem,
// Remember, the recursive function expects to be able to pass in
// one parameter, the element.
function(e){
setCloneAttr(e, $('#kpSport').val());
});
// Clear the values recursively
childRecursive(newItem,
function(e){
clearCloneValues(e);
});
Hoping someone has an idea, perhaps I've just got my HTML elements in the wrong order? Thank you for your help! I'm hoping the fiddle is more helpful than just pasting a bunch of code here in the message.
The problem is in your clearCloneValues function. It doesn't differentiate between buttons and other for elements that you do want to clear.
Change it to:
// Sets an element's value to ''
function clearCloneValues(element){
if (element.attr('value') !== undefined && element.attr('type') !== 'button'){
element.val('');
}
}
As #PHPglue pointed out in the comments above, when new positions are added, they are incorrectly replicated (I'm assuming here) to the newly cloned for
There is a similar problem with the add years functionality.
A quick fix would be to initialize a variable with a clone of the original form fields:
var $template = $('div.kpSports').first().clone();
Then change your addSport handler to:
$('#addSport').click(function () {
//increment the value of our counter
$('#kpSport').val(Number($('#kpSport').val()) + 1);
//clone the first .item element
var newItem = $template.clone();
…
});
However, there are no event bindings for the new buttons, so that functionality is still missing for any new set of form elements.
Demo fiddle
Using even a simple, naive string based templates the code can be simplified greatly. Linked is an untested fiddle that shows how it might be done using this approach.
Demo fiddle
The code was simplified to the following:
function getClone(idx) {
var $retVal = $(templates.sport.replace(/\{\{1\}\}/g, idx));
$retVal.find('.jsPositions').append(getItemClone(idx, 0));
$retVal.find('.advtrain').append(getTrainingClone(idx, 0));
return $retVal;
}
function getItemClone(setIdx, itemIdx) {
var retVal = itemTemplate.replace(/\{\{1\}\}/g, setIdx).replace(/\{\{2\}\}/g, itemIdx);
return $(retVal);
}
function getTrainingClone(setIdx, trainingIdx) {
var retVal = trainingTemplate.replace(/\{\{1\}\}/g, setIdx).replace(/\{\{2\}\}/g, trainingIdx);
return $(retVal);
}
$('#kpSportPlayed').on('click', '.jsAddPosition', function() {
var $container = $(this).closest('.kpSports');
var containerIdx = $container.attr('data_idx');
var itemIdx = $container.find('.item').length;
$container.find('.jsPositions').append(getItemClone(containerIdx, itemIdx));
});
$('#kpSportPlayed').on('click', '.jsAddTraining', function() {
var $container = $(this).closest('.kpSports');
var containerIdx = $container.attr('data_idx');
var trainIdx = $container.find('.advtrain > div').length;
$container.find('.advtrain').append(getTrainingClone(containerIdx, trainIdx));
});
$('#addSport').click(function () {
var idx = $('.kpSports').length;
var newItem = getClone(idx);
newItem.appendTo($('#kpSportPlayed'));
});
I have a legacy html document containing h1 elements which don't have ids.
What I would like to achieve is to be able, using JavaScript, to get all h1(s) and then add to each a unique ID.
I have searched but could not find a solution that works.
Try getting all of them with document.getElementsByTagName("h1"). Loop through them, check if they have an id, and work appropriately. Try:
var h1s = document.getElementsByTagName("h1");
for (var i = 0; i < h1s.length; i++) {
var h1 = h1s[i];
if (!h1.id) {
h1.id = "h1" + i + (new Date().getTime());
}
}
DEMO: http://jsfiddle.net/kTvA2/
After running the demo, if you inspect the DOM, you'll see 3 out of the 4 h1 elements have a new, unique id. The one with the id in the first place isn't changed.
Note that this code needs to run after all elements are ready/rendered, which can be achieved by putting the code inside of a window.onload handler. The demo provided is set up to implicitly run the code then.
UPDATE:
With jQuery, you could use:
$(document).ready(function () {
$("h1:not([id])").attr("id", function (i, attr) {
return "h1" + i + (new Date().getTime());
});
});
DEMO: http://jsfiddle.net/kTvA2/7/
Use querySelectorAll() to get all of your header elements, then iterate over the result and generate yor unique id for each element.
var headerElements = document.querySelectorAll('h1');
for(h in headerElements) {
if(headerElements[h] instanceof Element) {
headerElements[h].id=uniqueIDgenerator();
}
}
So, i have span element where i appending some content - sometimes this content is duplicated. How to remove this one value which is duplicate of another ...
This is how looks like my output html:
<span class="some_class">
"value01"
"value01"
"value02"
"value03"
"value03"
</span>
I can't add any function because i have no idea how to do this, can u help me?
If these values are being added by JS code, then You can make sth like this:
http://jsfiddle.net/Sahadar/Nzs52/5/
You just have to make object which will store all strings placed inside this span, then just before insertion check if this inserted string is already in store object.
function(event) {
var textareaValue = textarea.value();
if(insertedTexts[textareaValue]) {
event.preventDefault();
textarea.value('');
} else {
insertedTexts[textareaValue] = true;
someSpan.append("\""+textareaValue+"\"");
}
}
If these values are already inside span, use function as follows:
var someSpan = $('.some_class');
var insertedTexts = [];
var result = someSpan.text().match(/"\w+(?=\")/gm);
result = result.map(function(value) {
return value.substring(1,value.length);
});
result.forEach(function(value) {
if(insertedTexts.indexOf(value) === -1) {
insertedTexts.push(value);
}
});
var newSpanText = "\""+insertedTexts.join('""')+"\"";
someSpan.text(newSpanText);
console.info(result, insertedTexts);
It's rebuilding span text (trimming etc.) but main functinality is preserved.
jsFiddle working copy:
http://jsfiddle.net/Sahadar/kKNXG/6/
Create an array variable
var vals = [];
which keeps track of the items. Then, in your function that appends items to the span check:
if (vals.indexOf("Mynewvalue") > -1) {
// Add to the span...
}
my naming convention
id=xxxxx //actual field shown in the screen
id=xxxxxHDN // hidden field containing the enable/disabled status of the component from the set from the controller.
Now what I am trying to do is get the satus of xxxxxHDN to be true/false ,
and accordingly set the components status to disabled /enabled .with java script..
var div = document.getElementById("hiddenFields"); // i hava some 30 hidden fields containing the
var j;
for (j=0;j<div.childNodes.length;j++)
if(div.childNodes[j].value){
alert("inside the loop");
var someElementHDN = div.childNodes[j].id; // my aim is to get the ID=xxxxxHDN
var someElementHDNToString = someElementHDN .toString(); // my aim is to get the string value "xxxxxHDN"
var toRemove = 'HDN'; // the part i wanna remove from 'someElementHDNToString' to make it an id for 'xxxxx'
var equivalantComponentIDAsString = someElementToString.replace(toRemove,'');
$('#' + equivalantComponentIDAsString ).attr('disabled', true);
}
}
Invested a lot of time manupulatiing things above , doesent seems to work . I am new to java scrcript , Where am I missing it?
If you have an element with id like 'fooHDN' and want to find another element with id 'foo', then you can do something like:
var otherElement = document.getElementById(someElement.id.replace(/HDN$/,''));
Assuming that you already have someElement and it's a DOM element.
Your posted js code has error: div does not have a "length", do you mean "div.childNodes.length"?
Anyway, since you're using jQuery already, I think it can become easier as below:
Already tested and it works fine.
$("#hiddenFields input[type='hidden'][id$='HDN']").each(
function () {
var elemId = this.id.replace(/HDN$/, '');
$('#' + elemId).attr('disabled', this.value.toLowerCase() == 'false' ? false : true);
}
);