javascript 采用正则表达式获取地址栏参数

Posted 2021-05-04

function GetQueryString (name) {
  var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)');
  var r = window.location.search.substr(1).match(reg);
  
  if (r != null) {
    return unescape(r[2]);
  } else {
    return null;
  }
}