DiscordiaJQUERY - Using DIVs after load(ing) an external page

Before openning this thread, I googled this query during this night without success. It seems that it's a basic and common use of JQuery:

• load an external page (a table with #IMGs content) inside a (<DIV id="content"></DIV>)
• To access a specific ID : no problem using .live function

The problem is I want the list (Or array) of the IMGs#IDs (newly) charged. When I try:

 var imgIDs = $('#content').find('img').开发者_开发百科map(function(){
    return this.id;
 }).get();
 alert (imgIDs.length);

The alert always give me 0 ! It's empty.

How could I proceed ?

Your description makes it sound like you're using .live because you don't know when the content inside #content has loaded. This is also a problem for the code example you give. You should run it from the success (or maybe complete) handler of the load. Eg. if you're using something like the following to populate the #content div:

$('#content').load('/mydata');

Then try this to execute your function once it's been populated:

$('#content').load('/mydata', function() {
    var imgIDs = $('#content').find('img').map(function(){
        return this.id;
    }).get();
    alert(imgIDs.length);
});

See the jQuery load documentation on how this example works.

If you give a js fiddle or link demonstrating the 'real' problem, that'd help me be more sure about what you're asking.