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DOMStringList: contains() method

files/en-us/web/api/domstringlist/contains/index.md

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{{APIRef("DOM")}}{{AvailableInWorkers}}

The contains() method returns a boolean indicating whether the given string is in the list.

Syntax

js-nolint
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

  • {{jsxref("TypeError")}}
    • : Thrown if no argument is provided.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}