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Including JavaScript into JavaScript (using Dojo)

Ever thought of including a JavaScript class into another one? Usually you place all required JavaScript modules in the right order within the head of the page where you want to use them. Sometimes I prefer loading the requirements within the script (with checking if it has already been loaded before) instead of writing a lot of documentation.

The following code snippet uses Dojo 1.3+ API to create a script tag and place it to the head as the first child:


var script_url = 'http://www.topfstedt.de/js/foo.js';
var script_obj = dojo.create('script', {
    'src': script_url, 'type':'text/javascript'
});
dojo.query("head").addContent(script_obj, "first");