Docs

URLSearchParams.prototype.getAll

Returns all values associated with the parameter name.

Parameters

Example

let params = new URLSearchParams("foo=1&foo=2&bar=3")
params.getAll("foo")
["1", "2"]
let params = new URLSearchParams("a=1&b=2")
params.getAll("a")
["1"]
let params = new URLSearchParams("x=y")
params.getAll("nonexistent")
[]