Angularjs ng minlength directive

The ng-minlength directive in AngularJS allows you to specify a minimum length requirement for an input field. Here's an example:

<input type="text" ng-model="myText" ng-minlength="3">

In this example, we're using the ng-minlength directive to set a minimum length requirement of 3 characters for an input field. The ng-model directive is used to bind the value of the input field to the myText variable.

If the user enters a value into the input field that is less than 3 characters long, AngularJS will set the $invalid flag on the form control. You can use this flag to show an error message or disable a submit button until the input meets the minimum length requirement.

Here's an example of how you might use the $invalid flag to show an error message:

<input type="text" ng-model="myText" ng-minlength="3">
<div ng-show="myForm.myInput.$invalid && !myForm.myInput.$pristine">Please enter at least 3 characters.</div>

In this example, we're using the ng-show directive to show an error message if the input field is $invalid and not $pristine (i.e. the user has interacted with the field).

Note that the ng-minlength directive only works with input, textarea, and select elements.