In Javascript, URLSearchParams Is it different "set" between "append"?
const test = new URLSearchParams();
test.append("name", "Harry Potter");
const test = new URLSearchParams();
test.set("name", "Harry Potter");
^ different?
CodePudding user response:
The difference becomes easy to see when you call the methods twice. With append
, both values are included in the URL, while with set
, any present value will be overridden.
const url = new URLSearchParams()
url.append("name", "Harry Potter")
url.append("name", "Hermione Granger")
url.toString() // "name=Harry Potter&name=Hermione Granger"
const url = new URLSearchParams()
url.set("name", "Harry Potter")
url.set("name", "Hermione Granger")
url.toString() // "name=Hermione Granger"