AngularJS ng-required
Directive
Example
Make the input field required:
Required:
<input type="checkbox" ng-model="myVar">
<input name="myInput"
ng-model="myInput" ng-required="myVar">
Try it yourself »
Definition and Usage
The ng-required
directive sets the required attribute of a form
field (input or textarea).
The form field will be required if the expression inside the ng-required
attribute returns true.
The ng-required
directive is necessary to be able to shift the
value between true
and false
. In HTML, you cannot set
the required
attribute to false
(the presence of the
required attribute makes the element required, regardless of it's value).
Syntax
<input ng-required="expression"></input>
Supported by <input>, <select>, and <textarea> and other editable elements
Parameter Values
Value | Description |
---|---|
expression | An expression that will set the required attribute if it returns true. |