How to create Directives in AngularJS with examples?
Directives in AngularJS are a powerful feature that allows developers to create custom HTML tags and attributes. These custom tags and attributes can be used to extend the functionality of HTML, making it easier to create complex web applications. Here’s how you can create a directive in AngularJS:
Declare the directive:
The first step in creating a directive is to declare it using the ‘directive’ function of AngularJS. The ‘directive’ function takes two arguments – the name of the directive and a factory function that returns a directive definition object.
In this example, we are declaring a directive named ‘myDirective’.
Define the directive:
The directive definition object contains properties that define the behavior of the directive. The most commonly used properties are ‘restrict’, ‘template’ or ‘templateUrl’, and ‘link’.
In this example, we are defining a directive that has the following properties:
‘restrict’: This property specifies how the directive can be used in HTML. In this case, we are using ‘E’ to indicate that the directive can be used as an element.
‘template’: This property specifies the HTML content that should be generated when the directive is used in HTML.
‘link’: This property is a function that is called when the directive is linked to an element in HTML. The function takes three arguments: ‘scope’, ‘element’, and ‘attrs’. In this case, we are setting the value of the ‘name’ variable in the directive’s scope to the value of the ‘name’ attribute in the HTML.
Use the directive:
Once the directive has been defined, it can be used in HTML like any other HTML tag.
In this example, we are using the ‘myDirective’ directive with the ‘name’ attribute set to ‘John’. When this HTML is rendered, it will generate the following output:
This is just a basic example of how to create and use a directive in AngularJS. There are many more properties that can be defined in the directive definition object to create more complex directives.
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