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JavaScript DOM HTML method: isSupported()

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The isSupported() method (when applied to HTML elements in the JavaScript DOM) returns true if specified feature is supported, otherwise returns false.

 

Some major browsers no longer support this method, and so it is desirable not to use it.

 

It has the following syntax with the following parameters. It returns a Boolean as above.

 

element.isSupported(feature, version)

 

Parameter

Required / Optional

Description

feature

Required

String defining feature being tested

version

Option

String defining version of feature being tested

 


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