HTML | DOM Input Password maxLength Property

Last Updated : 25 Aug, 2022

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>