40.GetQueryString

var url = 'https://www.baidu.com/s?id=123&name=why&phone=13876769797';
function getQueryString(name) {
  var strs = '';
  var index = url.indexOf('?');
  if(index!=-1) {
    strs = url.substring(index+1).split('&');
  }
  for (let index = 0; index < strs.length; index++) {
    var splitItem = strs[index].split('=');
    if(splitItem[0]==name) {
      return splitItem[1];
    }
  }
};
console.log(getQueryString('name'));