HTML | DOM Input Number Object

Last Updated : 25 Aug, 2022

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:

Property	Description
type	This property is used to return which type of form element the number field is.
value	This property is used to set or return the value of the value attribute of a number field.
autocomplete	This property is used to set or return the value of the autocomplete attribute of a number field.
autofocus	This property is used to set or return whether a number field should automatically get focus when the page loads.
defaultValue	This property is used to set or return the default value of a number field.
disabled	This property is used to set or return whether a number field is disabled or not.
form	This property is used to return reference to the form that contains the number field.
list	This property is used to return a reference to the datalist that contains the number field.
max	This property is used to set or return the value of the max attribute of a number field.
min	This property is used to set or return the value of the min attribute of a number field.
name	This property is used to set or return the value of the name attribute of a number field.
placeholder	This property is used to set or return the value of the placeholder attribute of a number field.
readOnly	This property is used to set or return whether the number field is read-only or not.
required	This property is used to set or return whether the number field must be filled out before submitting a form.
step	This property is used to set or return the value of the step attribute of a number field.

Input Number Object Methods:

Method	Description
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.
select()	This method is used to select the content of a Input Number field.

Example-1:

HTML

<!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:

HTML

<!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>