javascript + send multiple strings with URL

Question

I have a script that calls another php page and passes values using PHP get.

The one variable, q is sent with the URL where str is a variable.

xmlhttp.open("GET","getdata.php?q="+str,true); 

I have a few multiple variables that I want to send in the URL string.

How can I send multiple variables.

Along the lines of:

xmlhttp.open("GET","getdata.php?q="+str+"y="+str2+"z="+str3,true); 

where the URL will then be somthing like

page.php?q=Peter&y=John&z=Smith

Answer 1

You'll need to separate them with an ampersand, and probably URL-encode them too:

xmlhttp.open("GET","getdata.php?"
    + "q=" + encodeURIComponent(str)
   + "&y=" + encodeURIComponent(str2)
   + "&z=" + encodeURIComponent(str3), true);

Also, no problem ;)

Answer 2

Seems you just forgot the ampersands:

xmlhttp.open("GET","getdata.php?q="+str+"&y="+str2+"&z="+str3,true);
                                         ^          ^

But, more important, you need to escape the strings:

str = encodeURIComponent(str);

before using them as url parameters. See also this article and that question on encode-functions.

Answer 3

You need to add an ampersand between strings:

xmlhttp.open("GET","getdata.php?q="+str+"&y="+str2+"&z="+str3,true);

Answer 4

You're practically there, the only thing missing from your request/uri is the ampersand between the request parameters:

xmlhttp.open("GET","getdata.php?q="+str+"&y="+str2+"&z="+str3,true);