URL Get parameter value

How to get the Address bar parameters using JS (super Simple)

Method One: Use regular expressions to get the address bar parameters: (highly recommended, both practical and convenient!) ）

function getquerystring (name) {varReg =NewREGEXP ("(^|&)"+ name +"= ([^&]*) (&|$)"); varR = Window.location.search.substr (1). Match (REG); if(r!=NULL)returnUnescape (r[2]);return NULL;} //Calling MethodsAlert (GetQueryString ("Parameter name 1"); alert (GetQueryString ("Parameter Name 2"); alert (GetQueryString ("Parameter name 3"));

Here's an example:

If the Address bar URL is: abc.html?id=123&url=http://www.maidq.com

So, but you use the above method to invoke: Alert (getquerystring ("url"));

A dialog box pops up: the content is http://www.maidq.com

If using: Alert (getquerystring ("id")), then the popup content is 123;

Of course, if you do not pass parameters, such as your address is abc.html back no parameters, the force output call results sometimes error:

So we have to add a judgment to determine if the argument we requested is empty, first assign the value to a variable:

var myurl=getquerystring ("url"); if (Myurl! =null && myurl.tostring () .length>1) {   alert (getquerystring (  "URL"));

This will not be an error!

URL Get parameter value