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Different forms of $(document).ready

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jquery

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What is $( document .ready function?

$( document ). ready()A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside $( document ). ready() will only run once the page Document Object Model (DOM) is ready for JavaScript code to execute.

Can you have multiple $( document .ready function ()?

ready' function in a page? Can we add more than one 'document. ready' function in a page? Yes we can do it as like I did in below example both the $(document).

What is difference between $( document .ready function () vs $( function ()?

So technically they are both the same. Not major difference between these two declaration. They used based on weather you use JavaScript then you should use $(document). ready declaration in other case you use jQuery library which is a part of JavaScript then you should use $(function) declaration.

What is $( document .ready () and $( window .load () in jQuery?

ready() and $(window). load() event is that the code included inside onload function will run once the entire page(images, iframes, stylesheets,etc) are loaded whereas the $(document). ready() event fires before all images,iframes etc. are loaded, but after the whole DOM itself is ready.


$ is the jQuery object itself, which when called implements a whole pile of different interfaces. $('string') runs a selector or constructs a node; $(domElement) wraps an element... and $(a_function) is a convenient short hand for $(document).ready(a_function). See the jQuery API docs for (much) more information.

A note in passing: $(function () { ... }) is shorter, but if you ever want to search for all of your on-ready events, you might be wishing that you had .ready to search for :)


There is no difference.

One is a convenient shorthand that calls the other internally.

From the jQuery docs:

A shorthand for $(document).ready(). Allows you to bind a function to be executed when the DOM document has finished loading. This function behaves just like $(document).ready(), in that it should be used to wrap other $() operations on your page that depend on the DOM being ready to be operated on. While this function is, technically, chainable - there really isn't much use for chaining against it.

You can have as many $(document).ready events on your page as you like. See ready(Function) for details about the ready event.


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