此代码在IE中不起作用

Question

Hi so I have this jQuery/JS script. That basically takes an encoded URL string and parses it and saves variable values into variables.

Basically what PHP's $_GET does.

function getUrlVars() 
{
 var map = {}; 
 var parts = window.location.search.replace(/[?&]+([^=&]+)(=[^&]*)?/gi, 

   function(m,key,value) 
     { map[key] = (value === undefined) ? true : value.substring(1); }); 

 return map; 
}

Basically this script does what I want. From this URL string:

/autopop.html?Email=test%40test.com&LastName=Test+last&&FirstName=+Test+First

I get the values:

Email = test%40test.com

LastName = Test+last

FirstName = +Test+First

What I want to do is Auto-populate a form on this same page with this information. (I know what you're thinking a server-side script would be a better solution but the boss says we don't have access to that, trust me, I've tried)

Long story short, here's the rest of my code:

var keys = getUrlVars();

$(document).ready(function(){
    var fname = keys['FirstName'].replace(/\+/g , " ").trim();
    var lname = keys['LastName'].replace(/\+/g , " ").trim();
    var email = decodeURIComponent(keys['Contact0Email'].replace(/\+/g , " ")).trim();
    $("#Email").val(email);
    $("#FirstName").val(fname);
    $("#LastName").val(lname);
});

This code gets the job done. All except for one browser. IE.

IE doesn't support decodeURIComponent or so I've read. In any case, I tried using other functions like decodeURI and escape all producing unwanted results.

My google searches have yielded nothing but, semi-interesting articles (totally off-topic but thought I'd just share that).

No solutions. Can anyone shed some light? How do I make this work on IE?

Answer 1

You have read wrong, decodeURIComponent works just fine in IE , even in IE6.

However, trim doesn't work in IE browsers prior to IE 9 and that's what causing your script to crash.

For working alternative, see the accepted answer here: .trim() in JavaScript not working in IE
Or use the jQuery trim() method as you're already using jQuery anyway.