Angularjs ng disabled directive

The ng-disabled directive in AngularJS is used to disable an HTML element based on a Boolean expression. When the expression evaluates to true, the element is disabled, and when it evaluates to false, the element is enabled.

Here is an example of using ng-disabled with a button element:

<button ng-disabled="isDisabled">Click me</button>

In this example, the ng-disabled directive is bound to a Boolean variable called isDisabled, which determines whether the button should be disabled or not. If isDisabled is true, the button will be disabled, and if it is false, the button will be enabled.

The ng-disabled directive can also be used with other form elements, such as input, select, and textarea. Here is an example of using ng-disabled with an input element:

<input type="text" ng-model="text" ng-disabled="isDisabled">

In this example, the ng-disabled directive is bound to the same isDisabled variable, which will disable the input element when isDisabled is true.

You can also use the ternary operator to dynamically set the value of ng-disabled based on a condition. Here is an example:

<button ng-disabled="isLoggedIn ? false : true">Login</button>

In this example, the button will be disabled if isLoggedIn is false and enabled if it is true.