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 theng-if
directive will be evaluated and if it evaluates totrue
, 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 theng-if
directive evaluates totrue
.<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 theng-if
directive evaluates tofalse
.// HTML to be rendered if expression is false
: This is the HTML content which will be rendered if the expression inside theng-if
directive evaluates tofalse
.
For more information about ng-if
and ng-else
, see the official AngularJS documentation.
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