JavaScript查询字符串

const url = new URL('https://example.com/?foo=bar&baz=qux');
const params = new URLSearchParams(url.search);
console.log(params.get('foo')); // 输出 "bar"
console.log(params.get('baz')); // 输出 "qux"

const url = new URL('https://example.com/?foo=bar&baz=qux');
const params = new URLSearchParams(url.search);
params.set('foo', 'quux');
params.append('newParam', 'value');
url.search = params.toString();
console.log(url.toString()); // 输出 "https://example.com/?foo=quux&baz=qux&newParam=value"

const url = new URL('https://example.com/?foo=bar&baz=qux');
const params = new URLSearchParams(url.search);
params.delete('foo');
url.search = params.toString();
console.log(url.toString()); // 输出 "https://example.com/?baz=qux"