js获得url超链接的参数值

// 假设当前URL为 https://example.com/page?name=John&age=30

const params = new URLSearchParams(window.location.search);

// 获取单个参数值
const name = params.get('name'); // "John"
const age = params.get('age'); // "30"

// 遍历所有参数
params.forEach((value, key) => {
  console.log(`${key}: ${value}`);
});

// 假设当前URL为 https://example.com/page?name=John&age=30

function getQueryParamByName(name) {
  const queryStr = window.location.search.substring(1); // 去掉'?'
  const paramsArray = queryStr.split('&');
  for (let param of paramsArray) {
    const [key, value] = param.split('=');
    if (key === name) {
      return decodeURIComponent(value); // 解码参数值
    }
  }
  return null;
}

const name = getQueryParamByName('name'); // "John"
const age = getQueryParamByName('age'); // "30"

const params = new URLSearchParams(window.location.search);
const allNames = params.getAll('name'); // 如果有多个name参数，返回数组