Javascript modules.

[mrchow19910319]

I just got into javascript and here is my understanding of module:

We have some “private data” that we do not want to share or corrupt so we stored them in the inner function. And we tell the enclosing function to return the value of the inner function. Thus we can use those value at our expense without worrying about data corruption. Because now the “value” we are using are references of the real value that is still being protected inside the inner function.

Is this correct?

An example of module:

 

function CoolModule(){
	var something = "cool";
	var another = [1,2,3];

	function doSomething(){
		console.log(something);
	}
	function doAnother(){
		console.log(another.join("!"));
	}

	return{
		doSomething:doSomething,
		doAnother:doAnother
	};
}

var foo=CoolModule();

foo.doSomething();
foo.doAnother();

 

[Pcgeekbrain]

Kinda, I believe what you are looking for is called 'closure' in the js world.

 

http://javascriptissexy.com/understand-javascript-closures-with-ease/

[mikat]

The thing you're looking for is probably ES2015 Classes, a new feature enabled by most browsers (replacement for functions inside functions and returning them):

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes