So, if I have to include a Javascript file in a .js file, I use to below script. It works fine.

var script = document.createElement("SCRIPT");
script.src = '.7.1/jquery.min.js';
script.type = 'text/javascript';
script.onload = function() {

  //Some code

};
document.getElementsByTagName("head")[0].appendChild(script);

What should I do If I need to include more than 1 files.

So, if I have to include a Javascript file in a .js file, I use to below script. It works fine.

var script = document.createElement("SCRIPT");
script.src = 'https://ajax.googleapis./ajax/libs/jquery/1.7.1/jquery.min.js';
script.type = 'text/javascript';
script.onload = function() {

  //Some code

};
document.getElementsByTagName("head")[0].appendChild(script);

What should I do If I need to include more than 1 files.

• javascript

• 3 You'd do the same thing. But it's better just to include it in the HTML of the JS file your referencing for the original JS file. – Spencer Wieczorek Commented Apr 19, 2017 at 3:38
• 1 Create a reusable function? – Felix Kling Commented Apr 19, 2017 at 3:39
• Take a step back and learn what each line of the code shown is actually doing. – nnnnnn Commented Apr 19, 2017 at 3:40
• Basically a duplicate of How do I include a JavaScript file in another JavaScript file? – Felix Kling Commented Apr 19, 2017 at 3:58

3 Answers 3

You can make a function and pass the js files you want to include like so:

        function scriptLoader(path, callback)
        {
            var script = document.createElement('script');
            script.type = "text/javascript";
            script.async = true;
            script.src = path;
            script.onload = function(){
                if(typeof(callback) == "function")
                {
                    callback();
                }
            }
            try
            {
                var scriptOne = document.getElementsByTagName('script')[0];
                scriptOne.parentNode.insertBefore(script, scriptOne);
            }
            catch(e)
            {
                document.getElementsByTagName("head")[0].appendChild(script);
            }
        }

And call it like so:

scriptLoader('/path/to/file.js');

in the similar manner you can call as many JS file you like this:

scriptLoader('/path/to/file2.js');
scriptLoader('/path/to/file3.js');

and even with onload callback functions like so:

scriptLoader('/path/to/file6.js',function(){
    alert('file6 loaded');
});

I would imagine you'd do the same as you've got there but just change the variable name from var script to something like var scriptA and change the code that follows to match like script.src = to scriptA.src =

This function will load one script or many, pass a single file or an array of many:

function include(src, cb) {
  arr = (src instanceof Array) ? src : [{
    'src': src,
    'cb': cb
  }];
  arr.forEach(function(item) {
    _include(item.src, item.cb);
  })

  function _include(src, cb) {
    var script = document.createElement("SCRIPT");
    script.src = src;
    script.async = true;
    script.type = 'text/javascript';
    script.onload = function() {
      if (cb) cb()
    }
    document.getElementsByTagName("head")[0].appendChild(script);
  }
}

include("/js/file1.js");
include("/js/file1.js", function(){console.log("file1 loaded")});
include([{src:"/js/file1.js"},{src:"/js/file2.js"},{src:"/js/file3.js"}]);