Javascript Reference - HTML DOM Input Number Object

The Input Number object represents an HTML <input> element with type="number".

Input Number Object Properties

Property	Description
autocomplete	Sets or gets the autocomplete attribute of a number field
autofocus	Sets or gets whether a number field can auto focus when the page loads
defaultValue	Sets or gets the default value of a number field
disabled	Disable or enable a number field
form	Get the form that contains the number field
list	Get the datalist that contains the number field
max	Sets or gets the max attribute of a number field
min	Sets or gets the min attribute of a number field
name	Sets or gets the name attribute of a number field
placeholder	Sets or gets the placeholder attribute of a number field
readOnly	Sets or gets whether the number field is read-only
required	Sets or gets whether the number field must be filled before submitting a form
step	Sets or gets the step attribute of a number field
type	Get the type of the number field
value	Sets or gets the value attribute of a number field

Standard Properties and Events

The Input Number object supports the standard properties and events.

Example

We can access an <input> element with type="number" by using getElementById().


<!DOCTYPE html>
<html>
<body>
<input type="number" id="myNumber" value="2">
<button onclick="myFunction()">test</button>
<p id="demo"></p>
<script>
function myFunction() {<!--   ww w.  j a  v  a  2 s  .  c o  m-->
    var x = document.getElementById("myNumber").value;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 2

We can create an <input> element with type="number" by using the document.createElement() method.


<!DOCTYPE html>
<html>
<body>
<button onclick="myFunction()">test</button>
<script>
function myFunction() {<!--  ww  w .  j  a  va 2s  .c o m-->
    var x = document.createElement("INPUT");
    x.setAttribute("type", "number");
    x.setAttribute("value", "12345");
    document.body.appendChild(x);
}
</script>
</body>
</html>

The code above is rendered as follows: