Singleton Design Pattern

Developer
Beau Carnes
Size
1,761 Kb
Views
28,336
  1. Singleton Design Pattern Previews
  2. Singleton Design Pattern HTML Codes
  3. Singleton Design Pattern JS Codes

How do I make an singleton design pattern?

What is a singleton design pattern? How do you make a singleton design pattern? This script and codes were developed by Beau Carnes on 13 September 2022, Tuesday.

Singleton Design Pattern Previews
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Singleton Design Pattern - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Singleton Design Pattern</title>
</head>
<body> <script src='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Singleton Design Pattern - Script Codes JS Codes

/* Singleton */
var mySingleton = (function () { // Instance stores a reference to the Singleton var instance; function init() { // Singleton // Private methods and variables function privateMethod(){ console.log( "I am private" ); } var privateVariable = "Im also private"; var privateRandomNumber = Math.random(); return { // Public methods and variables publicMethod: function () { console.log( "The public can see me!" ); }, publicProperty: "I am also public", getRandomNumber: function() { return privateRandomNumber; } }; }; return { // Get the Singleton instance if one exists // or create one if it doesn't getInstance: function () { if ( !instance ) { instance = init(); } return instance; } };
})();
var singleA = mySingleton.getInstance();
var singleB = mySingleton.getInstance();
singleA.publicMethod();
console.log(singleA.publicProperty);
console.log( singleA.getRandomNumber() === singleB.getRandomNumber() );
Singleton Design Pattern - Script Codes
Singleton Design Pattern - Script Codes
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Developer Beau Carnes
Username beaucarnes
Uploaded September 13, 2022
Rating 3
Size 1,761 Kb
Views 28,336
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