js url replace

// 原始URL
let originalUrl = 'https://example.com/page?param1=value1&param2=value2';

// 创建一个URL对象
let url = new URL(originalUrl);

// 替换查询参数param1的值
url.searchParams.set('param1', 'newvalue');

// 获取替换后的URL字符串
let modifiedUrl = url.toString();

console.log(modifiedUrl); // 输出: https://example.com/page?param1=newvalue&param2=value2

// 替换主机名
url.hostname = 'newexample.com';

// 替换路径名
url.pathname = '/newpage';

// 替换哈希值
url.hash = '#section2';

console.log(url.toString()); // 输出: https://newexample.com/newpage?param1=newvalue&param2=value2#section2

let originalUrl = 'https://example.com/page?param1=value1&param2=value2';
let modifiedUrl = originalUrl.replace('value1', 'newvalue');
console.log(modifiedUrl); // 输出: https://example.com/page?param1=newvalue&param2=value2