JavaScript Singleton Pattern

JavaScript

function MySingletonClass () {
  if (MySingletonClass._instance) {
    return MySingletonClass._instance
  }
  MySingletonClass._instance = this
  this.myProperty = 'Hello World !'
}

MySingletonClass.prototype = {
  myMethod: function () {
    return this.myProperty
  }
}

var a = new MySingletonClass()
var b = new MySingletonClass()
console.log(a === b)

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JavaScript Singleton Pattern

JavaScript

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Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console