HTML | DOM Input Password maxLength Property

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>