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JavaScript

Posted by matthewshear
matthewshear
9,229 Points

How do I know which way to create an object in JavaScript when you just taught me four different ways to do it?

The OO JavaScript course demonstrated four ways for creating a JavaScript object. My question is, why would I use one over another? Here are the four methods we were taught. Which one should I use and why?

(Method #1) function Apple (type) { this.type = type; this.color = "red"; }

Apple.prototype.getInfo = function() { return this.color + ' ' + this.type + ' apple'; };

(Method #2) var apple = { type: "macintosh", color: "red", getInfo: function () { return this.color + ' ' + this.type + ' apple'; } }

(Method #3) function Apple (type) { this.type = type; this.color = "red"; this.getInfo = function() { return this.color + ' ' + this.type + ' apple'; }; }

(Method #4) function Apple (type) { this.type = type; this.color = "red"; this.getInfo = getAppleInfo; }