import - Using a JavaScript file in another JavaScript file

I am writing some JavaScript files that will not be used with HTML documents. For example, writing a calculator in one JavaScript file, where I'll have different .js files say one for addition, subtraction, multiplication, division, etc..

I'd like to have each math operation in a self contained .js file then have another .js file that will #include the other smaller files and can call the functions from them?

Is that possible?

Answer

Using javascript:

var script = document.createElement('script');
script.src = '/js/script';
document.head.appendChild(script);

Using jQuery:

//you need to change your path
$.getScript('/js/script.js', function()
{
    // script is imported

});