How to execute a jQuery code [closed]

Answer 1

In general, jQuery code (that is, JavaScript code that uses the jQuery library) runs on the web browser. You run JavaScript code in web browsers using script tags, either where the code is actually in the tag:

...or where the code is in a separate file and the tag refers to the file:

(Note that the end tag is required, and you cannot write it as a self-closing tag like

Or if you're using it from a CDN like Google's:

Code you want to have run when the page is "ready" you can put inside a function that jQuery will call when the page is "ready":

Alternately, you can put your script tag at the very bottom of your page, just before your closing tag; if you do, it's still best to wrap your code in a function so you don't create global symbols unnecessarily:

jQuery's main function, jQuery, is available either as jQuery or $, so the above could be:

...but as $ is used by other libraries, there's a way to make jQuery not use the $ symbol. I mention this so you'll understand why you see jQuery in some code, but $ in other code.

Here's a complete example of using jQuery:

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