单例模式

Posted 2022-09-11 lbcxq

var CreateDiv = function (html) 
    this.html  = html;
    this.init();
;

CreateDiv.prototype.init = function () 
    var div = document.createElement(‘div‘);
    div.innerHTML = this.html;
    document.body.appendChild(div);
;

var ProxySingletonCreateDiv = (function () 
   var instance = null ;
   return function (html) 
       if(!instance)
           instance = new CreateDiv(html)
       
       return instance
   
)();

var a = new ProxySingletonCreateDiv("seven1") ;
console.log(a);
var b = new ProxySingletonCreateDiv("seven2") ;
console.log(b);