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JQLite.ready() used for automatic bootstrapping (when jQuery is not present) now checks if document already is ready when first called. This simplifies bootstrapping when the angular script is loaded asynchronously. However if other scripts with angular app code are being loaded as well it is developers responsibility to ensure that these scripts are loaded after angular-loader.js is evaluated and before angular.js script is evaluated.
107 lines
3.5 KiB
Text
107 lines
3.5 KiB
Text
@ngdoc overview
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@name Developer Guide: Bootstrap
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@description
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# Overview
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This page explains the Angular initialization process and how you can manually initialize Angular
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if necessary.
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# Angular `<script>` Tag
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This example shows the recommended path for integrating Angular with what we call automatic
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initialization.
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<pre>
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<!doctype html>
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<html xmlns:ng="http://angularjs.org" ng-app>
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<body>
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...
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<script src="angular.js">
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</body>
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</html>
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</pre>
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* Place the `script` tag at the bottom of the page. Placing script tags at the end of the page
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improves app load time because the HTML loading is not blocked by loading of the `angular.js`
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script. You can get the latest bits from {@link http://code.angularjs.org}. Please don't link
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your production code to this URL, as it will expose a security hole on your site. For
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experimental development linking to our site is fine.
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* Choose: `angular-[version].js` for a human-readable file, suitable for development and
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debugging.
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* Choose: `angular-[version].min.js` for a compressed and obfuscated file, suitable for use in
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production.
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* Place `ng-app` to the root of your application, typically on the `<html>` tag if you want
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angular to auto-bootstrap your application.
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<html ng-app>
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* If you choose to use the old style directive syntax `ng:` then include xml-namespace in `html`
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to make IE happy. (This is here for historical reasons, and we no longer recommend use of
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`ng:`.)
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<html xmlns:ng="http://angularjs.org">
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# Automatic Initialization
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Angular initializes automatically upon `DOMContentLoaded` event or when the `angular.js` script is
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evaluated if at that time `document.readyState` is set to `'complete'`. At this point Angular looks
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for the {@link api/ng.directive:ngApp `ng-app`} directive which designates your application root.
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If the {@link api/ng.directive:ngApp `ng-app`} directive is found then Angular will:
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* load the {@link guide/module module} associated with the directive.
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* create the application {@link api/AUTO.$injector injector}
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* compile the DOM treating the {@link api/ng.directive:ngApp
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`ng-app`} directive as the root of the compilation. This allows you to tell it to treat only a
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portion of the DOM as an Angular application.
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<pre>
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<!doctype html>
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<html ng-app="optionalModuleName">
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<body>
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I can add: {{ 1+2 }}.
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<script src="angular.js"></script>
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</body>
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</html>
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</pre>
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# Manual Initialization
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If you need to have more control over the initialization process, you can use a manual
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bootstrapping method instead. Examples of when you'd need to do this include using script loaders
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or the need to perform an operation before Angular compiles a page.
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Here is an example of manually initializing Angular. The example is equivalent to using the {@link
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api/ng.directive:ngApp ng-app} directive.
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<pre>
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<!doctype html>
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<html xmlns:ng="http://angularjs.org">
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<body>
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Hello {{'World'}}!
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<script src="http://code.angularjs.org/angular.js"></script>
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<script>
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angular.element(document).ready(function() {
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angular.bootstrap(document);
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});
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</script>
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</body>
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</html>
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</pre>
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This is the sequence that your code should follow:
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1. After the page and all of the code is loaded, find the root of the HTML template, which is
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typically the root of the document.
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2. Call {@link api/angular.bootstrap} to {@link compiler compile} the template into an
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executable, bi-directionally bound application.
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