Get the value passed in the address bar using js_javascript tips

Copy code The code is as follows:

function GetQueryString(name)
{
var reg = new RegExp("(^|&)" name "=([^&]*)(&|$)");
var r = window.location.search.substr(1).match(reg);
if(r!=null)return unescape(r[2]); return null;
}
var myurl=GetQueryString("power");
//This is getting The value named power in the address bar