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angularjsHow do I use AngularJS ng-if and else together in a single statement?


The ng-if and ng-else directives in AngularJS allow you to conditionally render a portion of the HTML based on a given expression. To use ng-if and ng-else together in a single statement, you can use the following syntax:

<div ng-if="expression">
    // HTML to be rendered if expression is true
</div>
<div ng-else>
    // HTML to be rendered if expression is false
</div>

For example, if you want to display a message if the value of a variable name is equal to John, you can use the following code:

<div ng-if="name == 'John'">
    Hello, John!
</div>
<div ng-else>
    Hello, stranger!
</div>

If the value of name is John, the output of the above code will be:

Hello, John!

If the value of name is something other than John, the output of the above code will be:

Hello, stranger!

The parts of the code are:

  • <div ng-if="expression">: This is the opening tag of the HTML element which will be conditionally rendered. The expression inside the ng-if directive will be evaluated and if it evaluates to true, the HTML element and its content will be rendered.
  • // HTML to be rendered if expression is true: This is the HTML content which will be rendered if the expression inside the ng-if directive evaluates to true.
  • <div ng-else>: This is the opening tag of the HTML element which will be conditionally rendered. This HTML element and its content will be rendered if the expression inside the ng-if directive evaluates to false.
  • // HTML to be rendered if expression is false: This is the HTML content which will be rendered if the expression inside the ng-if directive evaluates to false.

For more information about ng-if and ng-else, see the official AngularJS documentation.

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