简单的单例

Author: zhangshouyong

server.js

@@ -0,0 +1,6 @@
+var http =require('http');
+http.createServer(function(request,response){
+    response.writeHead(200,{'Content-Type':'text/plain'});
+    response.end('hello node.js\n');
+}).listen(8080);
+console.log("server running at 8080");

singleton.js

@@ -0,0 +1,14 @@
+var singleton=function(name){
+	this.name=name;
+	this.instance=null;
+}
+singleton.prototype.getName=function(){
+	alert(this.name);
+}
+singleton.getInstance= function(name){
+ 	if(!this.instance){
+	this.instance= new singleton(name);
+	}
+	return this.instance;
+}
+