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This article is about how jQuery uses has () to determine whether an element contains a particular class or the content of an element. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Use has () to determine whether an element contains a specific class or element

/ / jQuery 1.4.* includes support for the has method. This method will find / / if an an element contains a certain other element class or whatever it is / / you are looking for and do anything you want to them. $("input") .has (".email") .addClass ("email_icon") Jquery is what jquery is a simple and fast JavaScript library, it has a unique chain syntax and short and clear multi-function interface, efficient and flexible css selector, and can be extended to CSS selector, with convenient plug-in extension mechanism and rich plug-ins, after Prototype is another excellent JavaScript code base, can be used to simplify event processing, HTML document traversal, Ajax interaction and animation, in order to quickly develop the website.

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