How to implement chain plug-in call by jQuery

This article is about how jQuery implements chained plug-in calls. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Chain plug-in call

JQuery allows method calls from "chained" plug-ins to ease the process of repeatedly querying DOM and creating multiple jQuery objects. For example, the following code snippet represents your plug-in method call:

$('# elem'). Show (); $('# elem'). Html ('bla'); $(' # elem'). OtherStuff ()

By using chaining, it can be greatly improved:

$('# elem'). Show (). Html ('bla'). OtherStuff ()

Another way is to cache elements in the (prefix $) variable:

Var $elem = $('# elem'); $elem.hide (); $elem.html ('bla'); $elem.otherStuff ()

Chained and cached approaches are both best practices in jQuery to make code shorter and faster.

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