new URLSearchParams(string)

• string <string> 查询字符串

  ¥string <string> A query string

将 string 解析为查询字符串，并使用它来实例化新的 URLSearchParams 对象。前导 '?'（如果存在）将被忽略。

¥Parse the string as a query string, and use it to instantiate a new URLSearchParams object. A leading '?', if present, is ignored.

let params;

params = new URLSearchParams('user=abc&query=xyz');
console.log(params.get('user'));
// Prints 'abc'
console.log(params.toString());
// Prints 'user=abc&query=xyz'

params = new URLSearchParams('?user=abc&query=xyz');
console.log(params.toString());
// Prints 'user=abc&query=xyz' 拷贝