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HTML | DOM Input Number Object
  • Last Updated : 07 Feb, 2019

The Input Number Object in HTML DOM is used to represent an HTML input element with type= “number”.
The input element with type= “number” can be accessed by using getElementById() method.

Syntax:

  • It is used to access input number object.
    document.getElementById("id");
  • It is used to create input element
    document.createElement("input");

Input Number Object Properties:

PropertyDescription
typeThis property is used to return which type of form element the number field is.
valueThis property is used to set or return the value of the value attribute of a number field.
autocompleteThis property is used to set or return the value of the autocomplete attribute of a number field.
autofocusThis property is used to set or return whether a number field should automatically get focus when the page loads.
defaultValueThis property is used to set or return the default value of a number field.
disabledThis property is used to set or return whether a number field is disabled or not.
formThis property is used to return reference to the form that contains the number field.
listThis property is used to return a reference to the datalist that contains the number field.
maxThis property is used to set or return the value of the max attribute of a number field.
minThis property is used to set or return the value of the min attribute of a number field.
nameThis property is used to set or return the value of the name attribute of a number field.
placeholderThis property is used to set or return the value of the placeholder attribute of a number field.
readOnlyThis property is used to set or return whether the number field is read-only or not.
requiredThis property is used to set or return whether the number field must be filled out before submitting a form.
stepThis property is used to set or return the value of the step attribute of a number field.

Input Number Object Methods:

MethodDescription
stepDown()This method is used to decrement the value of the input number by a specified number.
stepUp()This method is used to increment the value of the input number by a specified number.

Example-1:






<!DOCTYPE html>
<html>
  
    <body style="text-align:center;">
  
        <h1 style="color:green;">  
            GeeksForGeeks  
        </h1>
  
        <h2>DOM Input Number Object</h2>
  
        <input type="number" 
               id="myNumber" 
               value="10">
  
        <p>Click the button to get the
          number of the number field.</p>
  
        <button onclick="myFunction()">
            Click Here!
        </button>
  
        <p id="demo"></p>
  
        <script>
            function myFunction() {
                  
                // Accessining input value
                var x = 
                 document.getElementById("myNumber").value;
                document.getElementById(
                  "demo").innerHTML = x;
            }
        </script>
  
    </body>
  
</html>

Output:

Before click on the button:

After click on the button:

Example-2:




<!DOCTYPE html>
<html>
  
<body style="text-align:center;">
  
    <h1 style="color:green;">  
            GeeksForGeeks  
        </h1>
  
    <h2>DOM Input Number Object</h2>
  
    <p>Click the button to create a Number field.</p>
  
    <button onclick="myFunction()">Click Here!</button>
  
    <script>
        function myFunction() {
            
            // Creating input element.
            var x = document.createElement("INPUT");
            x.setAttribute("type", "number");
            x.setAttribute("value", "5678");
            document.body.appendChild(x);
        }
    </script>
  
</body>
  
</html>

Output:

Before click on the button:

After click on the button:

Note: <input> elements with type=”number” are supported in Internet Explorer 9+ version.

Supported Browsers:

  • Google Chrome
  • Mozilla Firefox
  • Edge
  • Safari
  • Opera
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