This section explains how to bootstrap your application with angular, using either the angular javascript file, or manually.
ng:autobind
The simplest way to get an <angular/> application up and running is by inserting a script tag in
your HTML file that bootstraps the http://code.angularjs.org/angular-x.x.x.min.js
code and uses
the special ng:autobind
attribute, like in this snippet of HTML:
<!doctype html> <html xmlns:ng="http://angularjs.org"> <head> <script type="text/javascript" src="http://code.angularjs.org/angular-0.9.3.min.js" ng:autobind></script> </head> <body> Hello {{'world'}}! </body> </html>
The ng:autobind
attribute without any value tells angular to compile and manage the whole HTML
document. The compilation occurs as soon as the document is ready for DOM manipulation. Note that
you don't need to explicitly add an onLoad
event handler; auto bind mode takes care of all the
work for you.
In order to compile only a part of the document, specify the id of the element that should be
compiled as the value of the ng:autobind
attribute, e.g. ng:autobind="angularContent"
.
#autobind
In rare cases when you can't define the ng
namespace before the script tag (e.g. in some CMS
systems, etc), it is possible to auto-bootstrap angular by appending #autobind
to the script
src URL, like in this snippet:
<!doctype html> <html> <head> <script type="text/javascript" src="http://code.angularjs.org/angular-0.9.3.min.js#autobind"></script> </head> <body> <div xmlns:ng="http://angularjs.org"> Hello {{'world'}}! </div> </body> </html>
In this case it's the #autobind
URL fragment that tells angular to auto-bootstrap.
Similarly to ng:autobind
, you can specify an element id that should be exclusively targeted for
compilation as the value of the #autobind
, e.g. #autobind=angularContent
.
In order for us to find the auto-bootstrap script attribute or URL fragment, the value of the
script
src
attribute that loads angular script must match one of these naming
conventions:
angular.js
angular-min.js
angular-x.x.x.js
angular-x.x.x.min.js
angular-x.x.x-xxxxxxxx.js
(dev snapshot)angular-x.x.x-xxxxxxxx.min.js
(dev snapshot)angular-bootstrap.js
(used for development of angular)Optionally, any of the filename format above can be prepended with relative or absolute URL that
ends with /
.
Using auto-bootstrap is a handy way to start using <angular/>, but advanced users who want more control over the initialization process might prefer to use manual bootstrap instead.
The best way to get started with manual bootstraping is to look at the magic behind ng:autobind
by writing out each step of the autobind process explicitly. Note that the following code is
equivalent to the code in the previous section.
<!doctype html> <html xmlns:ng="http://angularjs.org"> <head> <script type="text/javascript" src="http://code.angularjs.org/angular-0.9.3.min.js" ng:autobind></script> <script type="text/javascript"> (angular.element(document).ready(function() { angular.compile(document)(); })(document); </script> </head> <body> Hello {{'World'}}! </body> </html>
This is the sequence that your code should follow if you're bootstrapping angular on your own:
IMPORTANT: When using <angular/> you must declare the ng namespace using the xmlns tag. If you don't declare the namespace, Internet Explorer does not render widgets properly.
<html xmlns:ng="http://angularjs.org">
If you want to define your own widgets, you must create your own namespace and use that namespace
to form the fully qualified widget name. For example, you could map the alias my
to your domain
and create a widget called my:widget. To create your own namespace, simply add another xmlsn tag
to your page, create an alias, and set it to your unique domain:
<html xmlns:ng="http://angularjs.org" xmlns:my="http://mydomain.com">
The <angular/> script creates a single global variable angular
in the global namespace. All
APIs are bound to fields of this global object.
<script ng:autobind> ... </script>