DOMStringList: contains() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The contains() method returns a boolean indicating whether the given string is in the list.
Syntax
js
contains(string)
Parameters
string-
A string you want to check for the existence of in the list.
Return value
A boolean indicating whether the given string is in the list.
Exceptions
TypeError-
Thrown if no argument is provided.
Specifications
| Specification |
|---|
| HTML # dom-domstringlist-contains |
Browser compatibility
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