Javascript Reference - HTML DOM isSupported Method

The isSupported() method checks if a specified feature is supported for the specified node.

Browser Support


`isSupported`	Yes	8.0	Yes	Yes	Yes

Syntax

node.isSupported(feature, version)

Parameters

Parameter	Type	Description
feature	String	Required. the feature name
version	String	Optional. the version to check

Return Value

It returns a Boolean type, true if the feature is supported, otherwise false.

Example

The following code shows how to check if the feature Core, version 2.0, is supported for the button element.


<!DOCTYPE html>
<html>
<body>
<button onclick="myFunction()">test</button>
<script>
function myFunction()<!--   ww w .j  a va2s.c om-->
{
    var item=document.getElementsByTagName("BUTTON")[0];
    var x=document.getElementById("demo");
    x.innerHTML=item.isSupported("Core","2.0");
}
</script>
</body>
</html>

The code above is rendered as follows: