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Understanding jQLite or jQuery Lite

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  Author : Shailendra Chauhan
Posted On : 26 Dec 2014
Total Views : 11,751   
Updated On : 26 Sep 2016
 

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.



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