how to import javecript file into another javascript file code example
Example 1: include other js files in a js file
document.writeln("<script type='text/javascript' src='Script1.js'></script>");
document.writeln("<script type='text/javascript' src='Script2.js'></script>");
Example 2: javascript include a js file from another
// jQuery
$.getScript('/path/to/imported/script.js', function()
{
// script is now loaded and executed.
// put your dependent JS here.
});