jQuery offers two powerful methods to execute code and attach event handlers: $(document).ready and $(window).load. The document ready event executes already when the HTML-Document is loaded and the DOM is ready, even if all the graphics haven’t loaded yet. If you want to hook up your events for certain elements before the window loads, then $(document).ready is the right place.
$(document).ready(function() { // executes when HTML-Document is loaded and DOM is ready alert("document is ready"); });
The window load event executes a bit later when the complete page is fully loaded, including all frames, objects and images. Therefore functions which concern images or other page contents should be placed in the load event for the window or the content tag itself.
$(window).load(function() { // executes when complete page is fully loaded, including all frames, objects and images alert("window is loaded"); });
hello all,
actually i just started with jquery few days ago. problem is that when i attach some events inside $(document).ready function they work nice and fine but when i want to attach a handler outside this function for example $(“#somedi”).click(function myfun(){}); it does not work. i just need to confirm if document.ready is really necessary to attach event handlers and if yes then why?
thanks in advance
Your syntax is wrong. The correct syntax is:
$(“#somedi”).click(function() { myfun(); });
Also, $(document).ready() isn’t needed, to be more specific, SHOULDN’T BE USED to attach event handlers. This is because no events are triggered before the document is ready.
You could also use
$(“#somedi”).click(myfun);
You can not attach event handlers before the DOM is loaded. Everything inside the $(document).ready() function will load as soon as the DOM is loaded and before the page contents are loaded. In traditional Javascript you would use the “onload” attribute in the body tag. jQuery offers the $(window).load() function for this, which executes a bit later than $(document).ready().
hello all
and thanks dear for ur kind reply. i have another problem using jquery. i have a table that is dynamically created and loaded onto my page through ajax and now i want to access individual elements of that tables (tr, td) how can i do this in jquery.
Is it a good practice to use both methods at the same time on the same page? for example, if i know that some of my jquery functions are only data related (document.ready), while i have photo gallery jquery plugins which i want to function once the images are loaded (window.load)
or is it better practice to have one over the other?
@Nyuszika7H:
actually you need the call to $(document).ready() otherwise you might not have that element that you try to attach a handler loaded.
if you use .live() then you do not need it.
Hi everyone. I’m using $(window).load for an horizontal scroll plugin, but I still see the images before the scroll is loaded, and it looks awful.
Any help? Thanks in advance!
Turn off the images in your css, add a .js class to your html tag and then reference a turn on css class reference in your css for classes that have .js so will be ready once your javascript has loaded and wont display what you don’t want before hand.
Thanks for the crispy post, i decided to use ready() instead of load() and now my script runs quicker than before.
Nice explanation of difference. I always used document.ready(), bu sometimes window.load() is better
Hello Every One,
I want to hide the button as soon as dom is loaded and button is present in the div element of Page
I am sending the approaches which I have tried…
var j$ = jQuery.noConflict();
j$(window).load( function(){
alert(j$(“.relatedProcessHistory”).length); ——————————-> 0
alert(j$(“input[value=’Submit for Approval’]”).length); ————————-> 0
j$(“input[value=’Submit for Approval’]”).hide();
alert(‘Hii…’); ——————-> hi
} );
var j$ = jQuery.noConflict();
j$(document).ready( function(){
alert(j$(“.relatedProcessHistory”).length); ——————————-> 0
alert(j$(“input[value=’Submit for Approval’]”).length); ————————-> 0
j$(“input[value=’Submit for Approval’]”).hide();
alert(‘Hii…’); ——————-> hi
} );
how can i set image when the page is loading. After page loading the image will hide. What is the syntax for that?
Best post ever related to ready, and dom loading issues. My case is, we have a heavy external (different domain) iframe in which the rendering was done together with some extra js script (show hide, element), we have no control of it.
After fixing the cross domain issues, the ready() gives us incorrect height EVERYTIME. Logically, because the document is ready(), but then there are extra js function that changes what to display. load() function solved it
Thank you!!
I’m still a newbie learning javascript. I had a page loading animation I wanted to display on a page while it loaded in the DOM. I was using (window).load and it wasn’t firing until too late.
After Googling, I found your tutorial. Changing the (window).load method to the $(document).ready(function() { method got it to fire exactly when I needed.
Thanks bunches!!
If you want to use DOM ready without a framework, this might be an option:
https://github.com/freelancephp/domReady
This is really useful. Sometimes, Chrome doesn’t pick up on the document.ready function but works on the window.load function! I was using it to run a resizer, and it is due to the controls being loaded late.
I was trying to wait until TinyMCE was fully loaded, and $(document).ready() wasn’t working. $(window).load() did the trick. Many thanks!
The $(window).load execute when all DOM is ready including images. That means if our web page has completely loaded including image then $(window).load function will call.
$(window).load(function() {
// script
})
for more detail about $(document).ready vs $(window).load vs window.onload click on
http://www.delhincrjob.com/blog/what-is-document-ready-vs-window-load-vs-window-onload/