URLSearchParams()

The URLSearchParams() constructor creates and returns a new URLSearchParams object.

Inputs: options One of: A string, which will be parsed from application/x-www-form-urlencoded format. A leading ‘?’ character is ignored. This is the only form that decodes percent-encoding, and decodes + to U+0020 SPACE. A literal sequence of name-value string pairs, or any object — such as a FormData object — with an iterator that produces a sequence of string pairs. Note that File entries will be serialized as [object File] rather than as their filename (as they would in an application/x-www-form-urlencoded form). A record of string keys and string values. Note that nesting is not supported.