Understanding jQLite or jQuery Lite

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05 Aug 2022

Intermediate

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jQLite is a subset of jQuery that is built directly into AngularJS. jQLite provides you all the useful features of jQuery. In fact it provides you limited features or functions of jQuery.

By default AngularJS use jQLite which is the subset of jQuery. If you want to use jQuery then simply load the jQuery library before loading the AngularJS. By doing so, Angular will skip jQLite and will started to use jQuery library.

Here is a table of supported jQuery methods by jQLite.

jQuery Method

Limitation, if any

addClass()

after()

append()

attr()

bind()

Does not support namespace, selectors and eventData

children

Does not support selectors

clone()

contents()

css()

data()

detach()

empty()

eq()

find()

Limited to lookups by tag name

hasClass()

html()

text()

Does not support selectors

on()

Does not support namespace, selectors and eventData

off()

Does not support namespace, selectors

one()

Does not support namespace, selectors

parent()

Does not support selectors

prepend()

prop

ready()

remove

removeAttr()

removeClass()

removeData()

replaceWith()

toggleClass()

triggerHandler()

Passes a dummy event object to handlers

unbind()

Does not support namespace

val()

wrap()

Accessing jQLite or jQuery with AngularJS

jQuery lite or the full jQuery library if available, can be accessed via the AngularJS code by using the element() function in AngularJS. Basically, angular.element() is an alias for the jQuery function i.e.

angular.element() === jQuery() === $()

<html>
<head>
 <script src="lib/angular.js"></script>
 <script type="text/javascript">
 var app = angular.module('app', []);
 app.controller("mainCtrl", function ($scope, $element) {
 $scope.clickme = function () {
 var elem = angular.element(document.querySelector('#txtName'));
 console.log(elem.val())// console the value of textbox
 };
 });
 </script>
</head>
<body ng-app="app">
 <div ng-controller="mainCtrl">
 <input type="text" id="txtName" value="Shailendra Chauhan" />
 <button type="button" ng-click="clickme()">Click me</button>
 </div>
</body>
</html>

What do you think?

I hope you will enjoy the jQlite with AngularJS while developing your app with AngularJS. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.