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HTML | DOM Input Text required Property

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  • Difficulty Level : Basic
  • Last Updated : 31 Jul, 2022

The Input Text required Property in HTML DOM is used to set or return whether Input Text Field should be filled or not when submitting the form. This property is used to reflect the HTML required attribute. 

Syntax:

  • It returns the Input text required property.
textObject.required
  • It is used to set the Input text required property.
textObject.required = true|false

Property Values:

  • true: It specifies that the text field must be filled out before submitting the form.
  • false: It is the default value. It specifies that the text field must not be filled out before submitting the form.

Return Value: It returns a Boolean value which represents that the text Field must be filled or not before submitting the form. 

Example 1: This example illustrates how to return Input text required property. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>
        HTML DOM Input Text required Property
    </title>
</head>
 
<body style="text-align:center;">
 
    <h1>GeeksForGeeks</h1>
 
    <h2>DOM Input Text required Property</h2>
     
    <form id="myGeeks">
        <input type="text" id="text_id" required>
    </form>
     
    <br><br>
     
    <button onclick="myGeeks()">Click Here!</button>
     
    <p id="GFG" style="font-size:25px;"></p>
     
    <!-- script to return the required Property-->
    <script>
        function myGeeks() {
            var txt = document.getElementById("text_id").required;
            document.getElementById("GFG").innerHTML = txt;
        }
    </script>
</body>
 
</html>                   

Output: 

Before Clicking the Button:

  

After Clicking the Button:

  

Example 2: This example illustrates how to set Input Text required Property. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>
        HTML DOM Input Text required Property
    </title>
</head>
 
<body style="text-align:center;">
 
    <h1>GeeksForGeeks</h1>
 
    <h2>DOM Input Text required Property</h2>
     
    <form id="myGeeks">
        <input type="text" id="text_id" required>
    </form>
     
    <br><br>
     
    <button onclick="myGeeks()">Click Here!</button>
     
    <p id="GFG" style="font-size:25px;"></p>
     
    <!-- script to set the required Property-->
    <script>
        function myGeeks() {
            var txt = document.getElementById("text_id").required
                    = false;
                     
            document.getElementById("GFG").innerHTML = txt;
        }
    </script>
</body>
 
</html>                   

Output: 

Before Clicking the Button:

  

After Clicking the Button:

  

Supported Browsers: The browser supported by DOM Input Text required Property are listed below:

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

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