Wraps a raw DOM element or HTML string as a jQuery element.
If jQuery is available,
angular.element is an alias for the
jQuery function. If jQuery is not available,
delegates to AngularJS's built-in subset of jQuery, called "jQuery lite" or jqLite.
jqLite is a tiny, API-compatible subset of jQuery that allows AngularJS to manipulate the DOM in a cross-browser compatible way. jqLite implements only the most commonly needed functionality with the goal of having a very small footprint.
jQuery, simply ensure it is loaded before the
angular.js file. You can also use the
ngJq directive to specify that jqlite should be used over jQuery, or to use a
specific version of jQuery if multiple versions exist on the page.
$document.find(), or use the standard DOM APIs, e.g.
jqLite provides only the following jQuery methods:
addClass()- Does not support a function as first argument
append()- Contrary to jQuery, this doesn't clone elements so will not work correctly when invoked on a jqLite object containing more than one DOM node
attr()- Does not support functions as parameters
on()) - Does not support namespaces, selectors or eventData
children()- Does not support selectors
css()- Only retrieves inline-styles, does not call
getComputedStyle(). As a setter, does not convert numbers to strings or append 'px', and also does not have automatic property prefixing.
find()- Limited to lookups by tag name
next()- Does not support selectors
on()- Does not support namespaces, selectors or eventData
off()- Does not support namespaces, selectors or event object as parameter
one()- Does not support namespaces or selectors
parent()- Does not support selectors
removeAttr()- Does not support multiple attributes
removeClass()- Does not support a function as first argument
toggleClass()- Does not support a function as first argument
triggerHandler()- Passes a dummy event object to handlers
off()) - Does not support namespaces or event object as parameter
AngularJS also provides the following additional methods and events to both jQuery and jqLite:
$destroy- AngularJS intercepts all jqLite/jQuery's DOM destruction apis and fires this event on all DOM nodes being removed. This can be used to clean up any 3rd party bindings to the DOM element before it is removed.
controller(name)- retrieves the controller of the current element or its parent. By default retrieves controller associated with the
nameis provided as camelCase directive name, then the controller for this directive will be retrieved (e.g.
injector()- retrieves the injector of the current element or its parent.
scope()- retrieves the scope of the current element or its parent. Requires Debug Data to be enabled.
isolateScope()- retrieves an isolate scope if one is attached directly to the current element. This getter should be used only on elements that contain a directive which starts a new isolate scope. Calling
scope()on this element always returns the original non-isolate scope. Requires Debug Data to be enabled.
inheritedData()- same as
data(), but walks up the DOM until a value is found or the top parent element is reached.
You cannot spy on
angular.element if you are using Jasmine version 1.x. See
https://github.com/angular/angular.js/issues/14251 for more information.