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Component Markup

Component resources contain markup and have a .cmp suffix. The markup can contain text or references to other components, and also declares metadata about the component.

Let's start with a simple "Hello, world!" example in a helloWorld.cmp component.

1swfobject.registerObject("clippy.codeblock-0", "9");
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17<aura:component>
18    Hello, world!
19</aura:component>
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This is about as simple as a component can get. The "Hello, world!" text is wrapped in the <aura:component> tags, which appear at the beginning and end of every component definition.

Components can contain most HTML tags so you can use markup, such as <div> and <span>. HTML5 tags are also supported.

1swfobject.registerObject("clippy.codeblock-1", "9");
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17<aura:component>
18    <div class="container">
19        <!--Other HTML tags or components here-->
20    </div>
21</aura:component>

Case sensitivity should be respected as your markup interacts with JavaScript, CSS, and Apex.

Note

Use the Developer Console to create components.

aura:component has the following optional attributes.

Attribute Type Description
access String Indicates whether the component can be used outside of its own namespace. Possible values are public (default), and global.
controller String The server-side controller class for the component. The format is namespace.myController.
description String A description of the component.
implements String A comma-separated list of interfaces that the component implements.