js 获取href参数值

// 假设当前URL为 https://example.com/page.html?id=123&name=John
const params = new URLSearchParams(window.location.search);
const id = params.get('id'); // "123"
const name = params.get('name'); // "John"

function getQueryParamByName(name) {
    const regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)');
    const results = regex.exec(window.location.href);
    if (!results) return null;
    if (!results[2]) return '';
    return decodeURIComponent(results[2].replace(/\+/g, ' '));
}

const id = getQueryParamByName('id'); // "123"
const name = getQueryParamByName('name'); // "John"

function getQueryParam(name) {
    const urlParams = new URLSearchParams(window.location.search);
    return urlParams.get(name);
}

const id = getQueryParam('id'); // "123"
const name = getQueryParam('name'); // "John"