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Task/Singleton/JavaScript/singleton.js

@@ -0,0 +1,20 @@
+function Singleton() {
+	if(Singleton._instance) return Singleton._instance;
+	this.set("");
+	Singleton._instance = this;
+}
+
+Singleton.prototype.set = function(msg) { this.msg = msg; }
+Singleton.prototype.append = function(msg) { this.msg += msg; }
+Singleton.prototype.get = function() { return this.msg; }
+
+
+var a = new Singleton();
+var b = new Singleton();
+var c = new Singleton();
+
+a.set("Hello");
+b.append(" World");
+c.append("!!!");
+
+document.write( (new Singleton()).get() );