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HTML | DOM Input Password maxLength Property

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  • Difficulty Level : Basic
  • Last Updated : 25 Aug, 2022
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The DOM Input Password maxLength Property is used to set or return the value of a maxLength attribute of a password field. It specifies the maximum number of characters that have been allowed in the element. 

Syntax: 

  • It is used to return the maxLength property.
passwordObject.maxLength
  • It is used to set the maxLength property.
passwordObject.maxLength = integer

Property Values:

  • number: It specifies a maximum number of characters that are allowed in the Password Field.

Return Value: It returns a numeric value which represents the maximum number of characters that have been allowed in the Password field. 

Example: This example illustrates how to return the property. 

HTML




<!DOCTYPE html>
<html>
<body style="text-align:center;">
    <h1 style="color:green;">
        GeeksForGeeks
    </h1>
    <h2>DOM Input Password maxLength Property</h2>
    <form id="myGeeks">
     Password: <input type="password"
        id="myPsw"
          maxlength="8">
         </form>
    <br><br>
    <button onclick="myFunction()">
        Click Here!
    </button>
    <p id="demo" style="color:green;font-size:25px;"></p>
    <script>
        function myFunction() {
            var x =
            document.getElementById(
            "myPsw").maxLength;
             
            document.getElementById(
            "demo").innerHTML =
          There are only " + x + " maximum characters" +
             "allowed in a Password Field.";
        }
    </script>
</body>
</html>

Output: 

Before clicking on the button: 

 

After clicking on the button: 

Example-2: This Example illustrates how to set the property. 

HTML




<!DOCTYPE html>
<html>
<body style="text-align:center;">
    <h1 style="color:green;">
        GeeksForGeeks
    </h1>
    <h2>DOM Input Password maxLength Property</h2>
    <form id="myGeeks">
     Password: <input type="password"
        id="myPsw"
          maxlength="8">
         </form>
    <br><br>
    <button onclick="myFunction()">
        Click Here!
    </button>
    <p id="demo" style="color:green;font-size:20px;"></p>
    <script>
        function myFunction() {
            var x =
            document.getElementById(
            "myPsw").maxLength = 6;
             
            document.getElementById(
            "demo").innerHTML =
    "Maximum number of characters allowed " +
     "in password field now " + x;
        }
    </script>
</body>
</html>

Output: 

Before clicking on the button:

  

After clicking on the button:

  

Supported Browsers: The browser supported by DOM input Password maxLength Property are listed below:

  • Google Chrome 1+
  • Edge 12+
  • Firefox 1+
  • Opera 2+
  • Safari 1+

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