Create object from class name in JavasScript ECMAScript 6

Question

I want create object factory using ES6 but old-style syntax doesn\'t work with new.

I have next code:

export class Column {}
export class Sequence {}         


        

Answer 1

I know this is an old post, but recently I've had the same question about how to instance a class dynamically

I'm using webpack so following the documentation there is a way to load a module dynamically using the import() function

js/classes/MyClass.js

class MyClass {
    test = null;
    constructor(param) {
        console.log(param)
        this.test = param;
    }
}

js/app.js

var p = "example";
var className = "MyClass";

import('./classes/'+className).then(function(mod) {
    let myClass = new mod[className](p);
    console.log(myClass);
}, function(failMsg) {
    console.error("Fail to load class"+className);
    console.error(failMsg);
});

Beware: this method is asynchronous and I can't really tell the performance cost for it, But it works perfectly on my simple program (worth a try ^^)

Ps: To be fare I'm new to Es6 (a couple of days) I'm more a C++ / PHP / Java developer.

I hope this helps anyone that come across this question and that is it not a bad practice ^^".