Develop Reference

How to bind event Jquery to page?

I have Jquery function that executes AJAX query to server.
How can I call this after load page in the specified url page? May I bind this to element HTML, I mean:
<div id="graph" onload="function()"></div>

jQuery handles the HTML file with a variable called document.
Document has two popular event states
load when the page has been loaded
ready when the page has been loaded and all other decorations to the HTML have been applied.
jQuery provides hooks for these states.
To run javascript code after each of the events listed above, you have to put the function within the appropriate event scope.
For loading, this would be…
$(document).load(function() {
// javascript code you want to execute
})
After the page has been ready, but not yet rendered, you can apply some other javascript code using
$(document).ready(function() {
// javascript code you want to execute
})

One way using jQuery:
$(document).ready( function() {
//do whatever you need, you can check if some element exists and then, call your function
if($("#graph").length > 0)
callfunction();
});
No jQuery, only vanilla js:
window.onload = function() {
if(document.getElementById("graph"))
callfunction();
}

Design a header script to run after the document is finished loading

I have a javascript function, "loadFramework()" that modifies an HTML document. Specifically, it repeatedly runs the jQuery command $("#element-id").load("document/name.html"), which injects the HTML in document/name.html directly into the element with #element-id.
Originally, I ran loadFramework() in a script in the document's header. However, since then I've realized that the function fails if the page has not loaded yet, since it relies on there being an element with #element-id.
I can't figure out how to get this function to run when it should. A simple solution seemed to be setting it to be the document.onload function:
document.onload = function() {
loadFramework();
}
But in this case it never seems to run at all.
How do I make sure a header function runs only after the document has loaded?

You should use window.onload if you are looking for a vanilla JS option
window.onload = function() {
loadFramework();
}

Jquery load takes additional argument "complete". You can run the javascript there. So the code would be:
$("#element-id").load("document/name.html", function(){
loadFramework();
});
You can also use $(document).ready(function{loadFramework()}) inside the html you are loading.

If you want to execute the loadFramework() method after "document/name.html" is loaded, I would suggest the following code.
$(function() {
$("#element-id").load("document/name.html", function(){
loadFramework();
});
});

Check if iframe is loaded inside $(document).ready

I want to check if iframe is loaded with the following code:
$(document).ready(function() {
jQuery('#iframeID').ready(somefunction);
}
It seems that 'somefunction' is called before iframe is loaded (the iframe is empty - just empty html-head-body).
Any idea why this happens?
Thank you.

Try this instead.
$('#iframeID').load(function() {
callback(this);
});
While dealing with iFrames, it is good enough to use load() event instead of $(document).ready() event.

This is because you're checking if the iFrame is ready, not the document inside.
$(document.getElementById('myframe').contentWindow.document).ready(someFunction);
should do the trick.

I have tried:
$("#frameName").ready(function() {
// Write you frame on load javascript code here
} );
and it did not work for me.
this did:
$("#frameName").load( function() {
//code goes here
} );
Even though the event does not fire as quickly - it waits until images and css have loaded also.

How to load a jQuery function only after the document finish loading

Strange situation:
I am building a menu bar using jQuery and CSS.
In my JavaScript file, I have an on-ready function like so:
$(document).ready(function(e) {
mark_active_menu();
}
and...
function mark_active_menu() {
var elementWidth = $("nav li").width();
alert(elementWidth);
}
For some reason, even BEFORE all the document finish loading, I'm getting the alert message with an incorrect width. Only when I release the message, the rest of the document loads and I'm getting the right width as it should be.
Why my function is being called BEFORE all the document finish loading?
Is there a way to load the function only AFTER a certain element done loading (Example: the nav element)?

You can use window.load, it will be triggered after all the resource have completed loading.
$(window).load(function(e) {
mark_active_menu();
});
The load event fires at the end of the document loading process. At
this point, all of the objects in the document are in the DOM, and all
the images and sub-frames have finished loading, Reference

All the current solutions are just treating symptoms of the main problem. If you want your handler to execute after all your ajax loads, then you may use a promise.
var ajax1 = $.ajax();
var ajax2 = $.ajax();
jQuery(function($) {
$.when.apply($, [ajax1, ajax2]).done(function() {
// your code here
});
});

Try on the window load event :
$(window).load(function() {
//Stuff here
});

To be sure, Try window load
$(window).load(function(e) {
mark_active_menu();
}

Before(sometimes, doesn't load absolutely at the beginning, a few milliseconds after(0-200ms about)):
$(document).ready(function(){
$('body').hide(0);
});
After:
$(window).load(function(){
$('body').delay(500).show(0);
});

In my situation of work with AJAX and HTML. I have the same problem with functions $(document).ready() and $(window).load(). I solved this problem by adding handler of my event (that should work at HTML DOC), to the jQuery function that runs right after AJAX reguest was finished. Read this: "
jQuery.post()" (third parameter in the function).
In my code it looks like this:
var RequestRootFolderContent = function(){
$.post(
'PHP/IncludeFiles/FolderContent.inc.php',
function(data){
$('[class~="folder-content"]').html(data);
//Here what you need
$('[class~="file"]').dblclick(function(){
alert("Double click");
});
}
)
}

Initialize script

I need to learn how to initialize scripts. I have google it but dont dont really understand it.
Right now I have a toggle-script that is in a div, that entire div gets loaded in to another page. The toggle scripts work, but not when its loaded in.
$(".class").click(function () {
$(this).toggleClass("add_class");
});
If somebody have time, can you explain to me how to initialize this script?
Thanks.

You should put this script inside a document.ready call.
Eg.
$(document).ready(function() {
//Put your code here
});
If I misunderstood your question and what you actually mean is:
How do you execute the script after you load it in through an AJAX call.
Then see this question: executing script after jQuery Ajax Call

Are you calling it after the elements are loaded on the page?
You should be using on() with jQuery 1.7+
$(document).on("click", ".class", function () {
$(this).toggleClass("add_class");
});
If you want to keep your syntax, you would have to do it either after the elements are rendered, or do it on document.ready.

I figure you're using jquery.ajax to fetch the div?
If so, you should be able to add the listeners in the success-function of the jquery.ajax call:
$('#result').load('ajax/test.html', function() {
$("#result .class").click(function () {
$(this).toggleClass("add_class");
});
});

simple and best
$(function(){
//your code here...
$(".class").click(function () {
$(this).toggleClass("add_class");
});
});