Is it possible to pass GET or POST variable to external javascript

Question

I am wondering whether is it possible to pass any variable to external java-script file

For example

I have this

Answer 1

Using javascript alone, you can do it this way:

And then use the javascript function this way:

// this code would print "hello world" if it was at http://localhost/index.php?var1=hello&var2=world
var var1 = $_GET('var1');
var var2 = $_GET('var2');
document.write(var1 + " " + var2);

To get the parameter needed from the src tag of the javascript you can do something like this:

// get the src parameter and split it down to the search query string
var src = document.getElementById('example').src;
params = src.split('?');
var var1 = $_GET('var1','?'+params[1]);

Credit to Josh Fraser, from whom I paraphrased this answer. http://www.onlineaspect.com/2009/06/10/reading-get-variables-with-javascript/