JS get the parameters in the URL link

function getQueryVariable(variable)
	{
		   var query = window.location.search.substring(1);
		   var vars = query.split("&");
		   for (var i=0;i<vars.length;i++) {
				   var pair = vars[i].split("=");
				   if(pair[0] == variable){return pair[1];}
		   }
		   return(false);
}

js Write this in , Then call the parameters where they are used

getQueryVariable("ddb")

Source connection example   www.baidu.com/index.html?ddb=abc123&cca=efg456

var  Parameters  =getQueryVariable("ddb");

 So parameters   Just  == abc123