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code code
| import {Component, Template, bootstrap} from 'angular2/angular2'; | import {Component, Template, bootstrap} from 'angular2/angular2';
p p
| The above import statement will import the three basic pieces needed to create an Angular app. The import statement loads the modules dynamically at runtime. | The above import statement will import the three modules from Angular. These modules load at runtime.
// STEP 3 - Create a component ########################## // STEP 3 - Create a component ##########################
.content-block.content-number.clearfix .content-block.content-number.clearfix
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h3#section-angular-create-account Create a component h3#section-angular-create-account Create a component
p p
| Angular allows you to create custom HTML elements through components. Components are used to structure and represent the UI. This quickstart demonstrates the process of creating a <code>Component</code> with the HTML tag of <code>app</code>. | Components are custom HTML elements. Angular uses components to empower HTML. Components structure and represent the UI. This quickstart demonstrates the process of creating a component. This component will have the tag of app.
pre pre
code &lt;app&gt;&lt;/app&gt; code &lt;app&gt;&lt;/app&gt;
p A <code>Component</code> is made up of two parts; the annotation section and the component controller. p A component consists of two parts; the annotation section and the component controller.
pre pre
code code
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h4 Component Annotations h4 Component Annotations
.c6 .c6
p p
| A component annotation provides meta-data about the <code>component</code>. An annotation can always identified by its <code>@</code> sign. | A component annotation provides meta-data about the <code>component</code>. An annotation can always identified by its at-sign — <code>@</code>.
p p
| The <code>@Component</code> annotation tells Angular what the HTML tag will be for your component. The tag is specified by using the <code>selector</code> property. The <code>selector</code> property is just a CSS selector. | The <code>@Component</code> annotation defines the HTML tag for the component. The selector property specifies the tag. The <code>selector</code> property is a CSS selector.
p p
| The <code>@Template</code> annotation tells Angular what template to apply to your component. This component uses an inline template, but external templates are available as well. To use an external template specify a <code>url</code> property and give it the path to the html file. | The <code>@Template</code> annotation defines the template to apply to the component. This component uses an inline template, but external templates are available as well. To use an external template specify a <code>url</code> property and give it the path to the html file.
pre pre
code code
| @Component({ | @Component({
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| ` | `
| }) | })
p p
| The component created above will have a HTML tag of <code>&lt;app&gt;&lt;/app&gt;</code> and a template of <code>&lt;h1&gt;Hello {{ name }}&lt;/h1&gt;</code>. | The component created above has a HTML tag of <code>&lt;app&gt;&lt;/app&gt;</code> and a template of <code>&lt;h1&gt;Hello {{ name }}&lt;/h1&gt;</code>.
.clear .clear
section.docs-sub-section section.docs-sub-section
h4 Component Controller h4 Component Controller
.c6 .c6
p p
| The component controller is defined using the ES6 <code>class</code> syntax. This <code>class</code> is the backing of the component's template. | The component controller is the backing of the component's template. A component controller uses ES6 <code>class</code> syntax.
pre pre
code code
| class AppComponent { | class AppComponent {
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p p
| Templates read from their component controllers. Templates have access to any properties or functions placed on the component controller. | Templates read from their component controllers. Templates have access to any properties or functions placed on the component controller.
p p
| The template above binds to a <code>name</code> property through the <code>{{ }}</code> syntax. In the component's constructor the name property is being set to Alice. When the template is rendered, Alice will appear instead of <code>{{ name }}</code>. | The template above binds to a <code>name</code> property through the <code>{{ }}</code> syntax.The body of the constructor assigns "Alice" to the name property. When the template renders, Alice will appear instead of <code>{{ name }}</code>.
.clear .clear
// STEP 4 - Bootstrap ########################## // STEP 4 - Bootstrap ##########################
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h3#section-transpile Bootstrap h3#section-transpile Bootstrap
p p
| The last step to get the component to load on the page. | The last step to load the component on the page.
section.docs-sub-section section.docs-sub-section
h4 The <code>bootstrap</code> function h4 The <code>bootstrap</code> function
.c6 .c6
p p
| Angular provides a <code>bootstrap</code> function that renders your component to the page. The <code>bootstrap</code> function takes a component as a parameter. Any child components inside of the parent component will be rendered as well. | Angular provides a <code>bootstrap</code> function that renders a component to the page. The <code>bootstrap</code> function takes a component as a parameter. Any child components inside of the parent component will render as well.
code code
pre bootstrap(AppComponent); pre bootstrap(AppComponent);
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h3#section-angular-create-account Declare the HTML h3#section-angular-create-account Declare the HTML
p p
| Create a <code>index.html</code> file at the root of the project. Include the <code>es6-shim.js</code> file in the <code>head</code> tag. Once the shim is included the <code>app</code> component can be declared in the HTML. | Create an <code>index.html</code> file at the root of the project. Include the <code>es6-shim.js</code> file in the <code>head</code> tag. Now, declare the app component the <code>body</code>. The es6-shim must load before any application code.
code code
pre pre
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h4 Load the component module h4 Load the component module
.c6 .c6
p p
| The last step is to load the module for the <code>app</code> component. The <code>es6-shim</code> file comes packaged with the <code>System</code> library. <code>System</code> will allow you to load modules in browsers that do not support ES6 module loading. | The last step is to load the module for the app component. The es6-shim file comes packaged with the System library. Most browsers today do not support ES6 module loading. System provides module loading functionality to these browsers.
p p
| To load the needed modules, <code>System</code> needs to know where to dynamically load the files. The <code>paths</code> property in <code>System</code> allows you to specify where the location of the files. | To load the needed modules, System needs to know where to load the files from. The paths property in System specifies the location of the files.
p p Tell System about three paths:
| Using <code>System.paths</code> specify paths for Angular, runtime assertions, and the <code>app</code> component created above. ol
li Angular - The Angular framework.
li Runtime assertions - Optional assertions for runtime type checking.
li The app component created above - The component to display on the page.
code code
pre pre