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AngularJS | textarea Directive

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  • Last Updated : 25 Mar, 2022

Textarea elements provide validation and basic state control. Attribute ng-model makes reference to text-directive. The current state of textarea elements is held by Angular JS. Listed below are the states of Textarea directive:

  • $touched: It signifies a touched field.
  • $ untouched: It signifies an untouched field.
  • $valid: It signifies valid field content.
  • $invalid: It signifies invalid field content.
  • $dirty: It signifies a modification in field content.
  • $pristine: It signifies unmodified field content.

Syntax:

<textarea ng-model="name"></textarea>

Properties: Classes are used to style Textarea elements depending on the state they hold. The ng-model attribute is used to make reference to text-directive. Listed below are the commonly used classes:

  • ng-touched: It signifies class applied on the touched field.
  • ng-untouched: It signifies class applied on the untouched field.
  • ng-valid: It signifies class applied on valid field content.
  • ng-invalid: It signifies class used for invalid field content.
  • ng-pristine: It signifies class used for the state having a modification in the field.
  • ng-dirty: It signifies class used with unmodified field content.

Return Value: It returns the text, user has entered in the text-field. Example 1: 

javascript




<!DOCTYPE html>
<html>
<script src=
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js">
  </script>
<style>
    textarea.ng-valid {
        color: green;
        background-color: lightgreen;
    }
     
    textarea.ng-invalid {
        background-color: green;
    }
</style>
 
<body ng-app="">
 
    <h1>
      <center>
        GeeksforGeeks
      </center>
  </h1>
    <p><b>Textarea field:<br><br>
Start typing.......</b></p>
    <textarea ng-model="gfg"
              required>
  </textarea>
 
</body>
 
</html>


Output: Before Typing: After Typing: Example 2: 

javascript




<!DOCTYPE html>
<html>
<script src=
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js">
</script>
<style>
    textarea.ng-dirty {
        color: green;
        background-color: lightgreen;
    }
     
    textarea.ng-pristine {
        background-color: green;
    }
</style>
 
<body ng-app="">
 
    <h1>
      <center>
        GeeksforGeeks
      </center>
  </h1>
    <p>
        <b>Textarea field:<br>
        <br>
Start typing.......</b></p>
    <textarea ng-model="gfg" required>
    </textarea>
</body>
 
</html>


Output: Before Typing: After Typing: Browser Support: Following browsers support textarea directive.

  • Google Chrome
  • Internet Explorer
  • Opera
  • Firefox
  • Safari

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