Develop Reference

Run function based on .pathname

So I've got this code in my page: a very simple but working script to translate it to several languages.
// preparing language file
var aLangKeys=new Array();
aLangKeys['en']=new Array();
aLangKeys['es']=new Array();
aLangKeys['fr']=new Array();
aLangKeys['cn']=new Array();
aLangKeys['en']['language']='english';
aLangKeys['es']['language']='español';
aLangKeys['fr']['language']='français';
aLangKeys['cn']['language']='中文';
aLangKeys['en']['buy']='buy';
aLangKeys['es']['buy']='comprar';
aLangKeys['fr']['buy']='acheter';
aLangKeys['cn']['buy']='买';
$(document).ready(function() {
// onclick behavior
$('.language').click(function() {
var lang = $(this).attr('id'); // obtain language id
if ($(this).attr('id') == 'es') {
$('.language').attr('id', 'fr');
}
else if ($(this).attr('id') == 'fr') {
$('.language').attr('id', 'cn');
}
else if ($(this).attr('id') == 'cn') {
$('.language').attr('id', 'en');
}
else if ($(this).attr('id') == 'en') {
$('.language').attr('id', 'es');
}
// translate all translatable elements
$('.translate').each(function(i){
$(this).html(aLangKeys[lang][ $(this).attr('key') ]);
});
} );
});
// HERE'S WHERE MY BRAIN STARTS MALFUNCTIONING
if ((window.location.pathname).split('/')[1] == 'es') {
// <-- EXECUTE FUNCTION ABOVE TO TRANSLATE TO SPANISH BASED ON PATHNAME
}
else if ((window.location.pathname).split('/')[1] == 'fr') {
// <-- EXECUTE FUNCTION ABOVE TO TRANSLATE TO FRENCH BASED ON PATHNAME
}
else {
}
So it basically translates (changes the value of certain elements on the page) when clicking a button. Every time you click on it, changes to the next language. That works fine.
THE PROBLEM is, I want it 'automatically' changed to a certain language if the user is visiting from a certain link:
Example:
www.mysite.com (nothing happens because nothing is on the pathname)
www.mysite.com/es/ ('automatically changes values to spanish')
www.mysite.com/fr/ ('automatically changes values to french')
I tried 'faking' the button click with javascript but didnt work.
Also tried 'naming' the translating function and 'call/run' it.
I know it's easier to do and I'm making it complicated but I'm such a noob.
Please, help. Or just a hint. Thanks in advance and sorry for my English.

Based on code above a couple thoughts:
1) lets change aLangKeys to an object with each key being another object.
i.e.
var aLangKeys={};
aLangKeys['en']={}; // Thats a named key/prop so we want an object here
...
aLangKeys['en']['language']='english'; // ditto the above comment
2) we probably want to move the logic that checks for locality inside the ready function.
I.e.
$(document).ready(function() {
// onclick behavior
$('.language').click(function() {
...
});
// we want access to the DOM *and* maybe certain functions that do stuff. So its gotta be in here...
if ((window.location.pathname).split('/')[1] == 'es') {
// <-- EXECUTE FUNCTION ABOVE TO TRANSLATE TO SPANISH BASED ON PATHNAME
}
else if ((window.location.pathname).split('/')[1] == 'fr') {
// <-- EXECUTE FUNCTION ABOVE TO TRANSLATE TO FRENCH BASED ON PATHNAME
}
}); // end of ready function
Couple reasons:
a) we want to change the page content based on info like pathname/locality. So we want to know the page is loaded first.
b) perhaps we will want to make a function that does language processing/changing and call that from multiple places. We want that function in scope of our locality checking logic. If we define that inside the ready function scope, we will need any logic that calls that function also inside the same scope

Is there any callback function after 'Friends List' loaded in cometchat?

I have integrated 'Embed Layout' comet chat on my site. Now I want to open particular friend chat on page load.
In the documentation, I've found below code to do the same. REF : Documentation Link
jqcc.cometchat.chatWith(user_id)
I have included in custom js from admin panel. However, it is showing below error in console
jqcc.cometchat.chatWith is not a function
But If I use same after friends list loaded from the console it is working fine.
How can I fix this issue?

Currently for time being I have fixed this issue by adding below code in custom js
var first_chat_loaded = false;
var first_chat = setInterval(function () {
try {
if (first_chat_loaded === false) {
// Function to get other user id defined in parent html page
var other_userid = parent.get_other_user_id();
jqcc.cometchat.chatWith(other_userid);
first_chat_loaded = true;
clear_first_load();
}
} catch (e) {
}
}, 1000);
function clear_first_load() {
clearInterval(first_chat);
}
Please let me know, If there is any proper way to do the same.

Kindly make use of this code snippet for the above mentioned issue
var checkfn = setInterval(
function(){
if(typeof jqcc.cometchat.chatWith == 'function'){
jqcc.cometchat.chatWith(user_id);
clearInterval(checkfn);
}
},
500);

jQuery, update content when necessary

I'm trying to update contents of a chat located in div (div1) but only when the contents of div1 change (a message was submitted into db and picked up in div1).
I tried the solution from here but my get fails to compare the data.
This solution works perfectly but without content comparison:
window.onload = startInterval;
function startInterval()
{
setInterval("startTime();",2000);
}
function startTime()
{
jQuery('#div1').load('index.php #div1 > *');
}
This is the modification based on this, which fails:
window.onload = startInterval;
function startInterval()
{
setInterval("startTime();",2000);
}
function startTime()
{
var $main = $('#div1');
$.get('chat.php #div1', function (data)
{
if ($main.html() !== data) $main.html(data);
});
}
I tried various modifications of this code but to no avail...
I can't reload the entire page and I don't want to do this if not necessary since it makes the chat harder to read if you have to scroll trough the messages.
How can this be fixed?
UPDATE
Based on #T.J's suggestions I modified the code which now works perfectly:
window.onload = startInterval;
function startInterval()
{
setInterval(startTime,3000);
scrolDown();
}
function startTime()
{
var $main = $('#div1');
$.get('#div1', function (data)
{
elements = $(data);
thisHTML = elements.find("#div1").html();
if ($main.html() !== thisHTML) {
$main.html(thisHTML);
scrolDown();
}
});
}
The other problem was that get required library:
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.pack.js"></script>
which apparently was not required by the load which I used previously.

You want to use get, but you want the fragment feature of load, so you'll have to do that work yourself. Then remember what you got last time, and only update if it's not the same:
var lastHTML;
function startTime()
{
var $main = $('#div1');
$.get('chat.php', function (data) // <== Or index.php, the question has both
{
var elements, html;
// Turn the HTML into elements
elements = $(data);
// Get the HTML of *only* the contents of #div1
html = elements.find("#div1").html();
// If that has changed, use it
if (lastHTML !== thisHTML) {
lastHTML = thisHTML;
$main.html(thisHTML);
}
});
}
Note that that's a fairly basic implementation of the fragment feature (it doesn't, for instance, strip out scripts the way load does). You may want to look at how load does its fragment stuff and replicate that (the joy of open source).

Having trouble with JS object literal setup

So I've setup my first JS design pattern - but I've run into an issue.
Here is my code on fiddle:
http://jsfiddle.net/jrutter/CtMNX/
var emailSignup = {
'config': {
// Configurable Options
'container': $('#email-signup'),
'emailButton': $('#email-submit'),
'emailInput': $('#email-input'),
'brontoDirectAddURL': 'URL',
'brontoListID': '0bbc03ec000000000000000000000003287b',
},
'init': function (config) {
// stays the same
// provide for custom configuration via init()
if (config && typeof (config) == 'object') {
$.extend(emailSignup.config, config);
}
// Create and/or cache some DOM elements
emailSignup.$container = $(emailSignup.config.container);
emailSignup.$button = $(emailSignup.config.emailButton);
emailSignup.$input = $(emailSignup.config.emailInput);
emailSignup.$brontoURL = emailSignup.config.brontoDirectAddURL;
emailSignup.$brontoList = emailSignup.config.brontoListID;
// Add email track to drop image pixel into for submission
emailSignup.$container.append('<div class="email-error"></div>');
emailSignup.$container.append('<div class="email-track"></div>');
// Call getEmaile
emailSignup.getEmail(emailSignup.$button, emailSignup.$input);
// make a note that the initialization is complete
emailSignup.initialized = true;
},
'getEmail': function ($button, $input) {
// click event
emailSignup.$button.click(function () {
// get the val
var $emailVal = $(emailSignup.$input).val();
// Call validateEmail
console.log($emailVal);
emailSignup.validateEmail($emailVal);
return false;
});
},
'validateEmail': function ($emailVal) {
var $emailRegEx = /^([\w-\.]+#([\w-]+\.)+[\w-]{2,4})?$/;
//console.log($emailVal);
if ($emailVal == '') {
$(".email-error").html('<p>You forgot to enter an email address.</p>');
} else if (!$emailRegEx.test($emailVal)) {
$(".email-error").html('<p>Please enter a valid email address.</p>');
} else {
$(".email-error").hide();
emailSignup.submitEmail($emailVal);
}
},
'submitEmail': function ($emailVal) {
$(".email-track").html('<img src=' + emailSignup.$brontoURL+'&email='+$emailVal+'&list1=' + emailSignup.$brontoList + '" width="0" height="0" border="0" alt=""/>');
},
};
Its a function to add a subscriber to an email list via bronto - it works perfectly when the script is included on the page and the init function is setup on the page too. But when I include the script in a shared header and try to fire the function from the document-ready, it doesnt seem to be working.
Also, if I try to pass in a 'container' - that also is breaking the script. Not sure what Im doing wrong? But if I pass in the URL - that does work!
$(function () {
emailSignup.init({
'brontoDirectAddURL':'URL','container':'#email-signup'
});
});
Any advice would be greatly appreciated!

Change the following code...
emailSignup.$container = emailSignup.config.container;
emailSignup.$button = emailSignup.config.emailButton;
emailSignup.$input = emailSignup.config.emailInput;
emailSignup.$brontoURL = emailSignup.config.brontoDirectAddURL;
emailSignup.$brontoList = emailSignup.config.brontoListID;
into the following...
// Create and/or cache some DOM elements
emailSignup.$container = $(emailSignup.config.container);
emailSignup.$button = $(emailSignup.config.emailButton);
emailSignup.$input = $(emailSignup.config.emailInput);
emailSignup.$brontoURL = $(emailSignup.config.brontoDirectAddURL);
emailSignup.$brontoList = $(emailSignup.config.brontoListID);
// Add email track to drop image pixel into for submission
emailSignup.$container.append('<div class="email-error"></div>');
emailSignup.$container.append('<div class="email-track"></div>');
You can not call append on a string. I've update your JSFiddle.

Your default config object contains jQuery collections. However, you are simply passing the string "#email-signup" as your container instead of $("#email-signup"). That's where the error is coming from. Your initial call should thusly be:
$(function () {
emailSignup.init({
'brontoDirectAddURL':'URL','container': $('#email-signup')
});
});
Note that as your initial module includes some jQuery calls, you will need to wrap the whole emailSignup mess into a $(document).ready() as well.
You may consider reconfiguring this whole thing as a jQuery plugin.

How do I make my live jQuery search wait a second before performing the search?

I've got a search input which sends data from an input to a php file as I type. The php file does a search on my database and shows up a list of search options. You know, the ajax style live searching.
My problem is, if you type something really fast, it might just conduct a search off of the first 1 or 2 letters even though another 10 have been typed. This causes a few problems.
My jQuery looks a bit like this:
$(document).ready(function(){
$('#searchMe').keyup(function(){
lookup(this.value);
});
});
and
function lookup(searchinput) {
if(searchinput.length == 0) {
// Hide the suggestion box.
$("#suggestions").hide();
} else {
$('#loading').fadeIn();
$.post("/RPCsearch.php", {queryString: ""+searchinput+""}, function(data){
if(data.length > 0) {
$("#suggestions").html(data).show();
$('#loading').fadeOut();
}
});
}
} // lookup
So I'm just curious, how can I make it so that my script waits until I've finished typing before running the function? My logic says something like if a key hasn't been pressed for 200 micro seconds, run the function, otherwise hold up a bit.
How is this done?

Easy, using setTimeout. Of course you only want one timer going at once, so it's important to use clearTimeout at the beginning of the function...
$(function() {
var timer;
$("#searchMe").keyup(function() {
clearTimeout(timer);
var ms = 200; // milliseconds
var val = this.value;
timer = setTimeout(function() {
lookup(val);
}, ms);
});
});

You may be interested in my bindDelayed jQuery mini-plugin. It:
Allows you to specify a delay before kicking off the request
Automatically cancels any previous requests that were scheduled to go off
Automatically cancels any in-air XHR requests that were in progress when you make your request
Only invokes your callback for the latest request
If the user types "s", waits long enough for the request to go out, and then types "a", and the response for "s" comes back before the response for "sa" you won't have to deal with it.
The answer to the original question using bindDelayed would look like so:
// Wait 200ms before sending a request,
// avoiding, cancelling, or ignoring previous requests
$('#searchMe').bindDelayed('keyup',200,'/RPCsearch.php',function(){
// Construct the data to send with the search each time
return {queryString:this.value};
},function(html){
// Use the response, secure in the knowledge that this is the right response
$("#suggestions").html(html).show();
},'html','post');
In case my site is down, here's the plugin code for Stack Overflow posterity:
(function($){
// Instructions: http://phrogz.net/jquery-bind-delayed-get
// Copyright: Gavin Kistner, !#phrogz.net
// License: http://phrogz.net/js/_ReuseLicense.txt
$.fn.bindDelayed = function(event,delay,url,dataCallback,callback,dataType,action){
var xhr, timer, ct=0;
return this.on(event,function(){
clearTimeout(timer);
if (xhr) xhr.abort();
timer = setTimeout(function(){
var id = ++ct;
xhr = $.ajax({
type:action||'get',
url:url,
data:dataCallback && dataCallback(),
dataType:dataType||'json',
success:function(data){
xhr = null;
if (id==ct) callback.call(this,data);
}
});
},delay);
});
};
})(jQuery);

You really ought to look at using the jQuery autocomplete plugin. I find this plugin to be very useful and it already does what you need. Look particularly at the delay option, which you can customize to change how long the plugin waits after a keystroke to run.

1 solution in psuedocode:
OnKeyPress()
txt = getTxt
sleep(200)
newTxt = getTxt
if (txt == newTxt) // nothing has been typed so do something
run my thing

this one is happy
$(document).ready(function(){
$("#searchMe").keyup(function () {
try{window.clearTimeout(timeoutID);}catch(e){}
timeoutID = window.setTimeout(run, 2000); //delay
function run()
{ //dowhatev
var text = $("#searchMe").val();
//$("#showit").html(text);
}
});
});

I have found the best success when attaching the event to keypress, keydown, and keyup inputs. Safari/FireFox/IE all seem to handle special keypresses (delete, backspace, etc.) a bit differently but using all events together seems to cover it. The only way that running all events works though is to use setTimeout so that when they all fire it just resets the timer and ultimately the callback only gets executed once.
var delay = 200;
var search_timer = null;
$("#searchMe").keydown(function(e) {
if(search_timer) {
clearTimeout(search_timer);
}
search_timer = setTimeout(lookup, delay);
});
$("#searchMe").keypress(function(e) {
if(search_timer) {
clearTimeout(search_timer);
}
search_timer = setTimeout(lookup, delay);
});
$("#searchMe").keyup(function(e) {
if(search_timer) {
clearTimeout(search_timer);
}
search_timer = setTimeout(lookup, delay);
});