如何从url中获取某物或其他物的索引

const url = new URL('https://example.com?foo=bar&baz=qux');

const searchParams = new URLSearchParams(url.search);

const fooValue = searchParams.get('foo'); // "bar"

const bazValues = searchParams.getAll('baz'); // ["qux"]

const hasFoo = searchParams.has('foo'); // true

const paramsArray = Array.from(searchParams.entries());
const fooIndex = paramsArray.findIndex(([key, value]) => key === 'foo');
console.log(fooIndex); // 输出：0（如果存在）