web api instance method
DOMStringList: contains() method
Available in workers
The contains() method returns a boolean indicating whether the given string is in the list.
Syntax
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
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.