How do I run a function only when a div gets loaded?

Question

I want to run a function only when a div gets loaded.

When I load the page, a number of files are loaded. At the end of the list, PHP echoes a div. When this one is displayed, jQuery should run a function.

I can do this with a click-event, but I want it to work automatically, without pushing a button.

This is how it works with a click:

$("#PP_end_show").live("click",function(){
    $("#PP_head_bar").slideToggle("slow");
    $("#PP_info_file_wrap").slideUp("slow");
}); 

This is the div echoed by PHP:

 <?php echo "<div id=\"PP_end_show\"></div>"; ?>

The output is generated after an AJAX call:

<form id="PP_search_input" method="post" name="search_ID" ONSubmit="xmlhttpPost('PP_search_stream_client.php', 'PP_search_input', 'PP_thumb_output', '<img src=\'images/wait.gif\'>');return false;  ">
        <input name="search_string" type="text" class="PP_input" id="search_string" value="<?php echo $_POST['search_string']; ?>"/>
        <button type="submit" class="PP_submit" id="search_submit"> search </button>

at the end of the generated output the specific div will be printed and should trigger the new jQuery function.

Answer 1

This is how I would tackle this issue, assuming I've understood it correctly in which the submission of the form PP_search_input, returns the html needed, in which then a the javascript code should be executed.

$('#PP_search_input').submit(function() {
    $.ajax({
         url: 'PP_search_stream_client.php',
         type: 'post',
         data: $(this).serialize(),
         success: function(html) {
             $(html).insertAfter('#whereToInsert') //change to however you want to insert the html
                    .find("#PP_head_bar").slideToggle("slow").end()
                    .find("#PP_info_file_wrap").slideUp("slow");                       
         }
        });
});

Answer 2

Try putting your javascript code inside the generated ajax code.

For example if your ajax is generated from the php code

<?php echo "<div id=\"PP_end_show\"></div>"; ?>

then try smth like this

<?php 
    echo "<div id=\"PP_end_show\"></div>"; 
    echo '$(function(){$("#PP_head_bar").slideToggle("slow");';
    echo '$("#PP_info_file_wrap").slideUp("slow");});'; 
?>