php or javascript

[Anon]

I am currently creating a survey system and started to use Javascript. But then came to a halt when I asked myself, how can I pass variables via a url into Javascript?

So the question is this, can you pass variables to Javascript via a url? Or do I need to use a programming language like php?

Example:

www.asite.com/survey.html?ticketnumber=12345

Can javascript read the variable ticketnumber? If so, how? This seems more like a Javascript question but I thought I check here first.

[Anon]

You can do it using JavaScript, but this would be done much more efficiently and easily with php.

[Anon]

Yes it would be but im going by what I have available. I wish I could use php but has to be client side right now. Do you know a document explaining this process to get it working?

Thanks in advance!!

[Anon]

I did this once before, when php wasn't available to me. Here's the javascript function that. you can access the query string through location.search.

you would put the function in your head, and then do something like:

var qs = new PageQuery(location.search);
var ticketnumber = qs.getValue('ticketnumber');
// output the ticket number:
document.write(ticketnumber);

My JavaScript's a little rusty, so forgive me if that doesnt work.

Here's the function:

// file: pagequery_api.js
// javascript query string parsing utils
// pass location.search to the constructor: var page = new PageQuery(location.search)
// get values like: var myValue = page.getValue("param1") etc.
// [e-mail] {{djohnson}}
// you may use this file as you wish but please keep this header with it thanks

function PageQuery(q) {
if(q.length > 1) this.q = q.substring(1, q.length);
else this.q = null;
this.keyValuePairs = new Array();
if(q) {
for(var i=0; i < this.q.split("&").length; i++) {
this.keyValuePairs = this.q.split("&");
}
}
this.getKeyValuePairs = function() { return this.keyValuePairs; }
this.getValue = function(s) {
for(var j=0; j < this.keyValuePairs.length; j++) {
if(this.keyValuePairs[j].split("=")[0] == s)
return this.keyValuePairs[j].split("=")[1];
}
return -1;
}
this.getParameters = function() {
var a = new Array(this.getLength());
for(var j=0; j < this.keyValuePairs.length; j++) {
a[j] = this.keyValuePairs[j].split("=")[0];
}
return a;
}
this.getLength = function() { return this.keyValuePairs.length; }
}