javascript - How to not use the `new` operator in JS API? -

so came across this article mr. baranovskiy says people shouldn't have use new operator use api. have created this basic example lets create instances of colorbox line of code var box = new colorbox(node, options);

how implement have in example without using new operator?

js:

var colorbox = function(node, options) {     this.setsize = function(){         node.style.width = options.width + 'px';         node.style.height = options.height + 'px';     }     this.setcolor = function(color){         node.style.backgroundcolor = color || options.color;     }     this.setsize();     this.setcolor();  }  var node = document.getelementbyid('thing1'); var options = {     color: 'red',     width: 200,     height: 200 }  var box = new colorbox(node, options);  settimeout(function(){     box.setcolor('blue'); }, 2000); 

first, don't agree article - think new reasonable way of writing code, , makes clear you're creating instance of "class", object-oriented language.

but...

take @ second approach on this answer, shows how have function return new instance if caller leaves off new (if this not instance of "class", caller left off new, , this global window). that's 1 way of not requiring user type new, while still safely returning new instance each time.

var colorbox = function(node, options) {     if (!(this instanceof colorbox))         return new colorbox(node, options);      // rest of constructor stuff };