If you give someone a program , you will frustrate them for a day; if you teach them how to program, you will frustrate them for a lifetime.IT 這段話的意思是，如果你交給某人一隻程式，你將折磨他一整天;如果你教會某人如何寫程式，你將折磨他一輩子。

部落格全站分類：數位生活

BloggerAds

Jan 01 Mon 2018 01:00
用用匿名函數和閉包加apply強制待定函數調用時使用特定上下文 - gaocong

文章出處

<button id="test">點我</button>
<script>
 var button={
     clicked:false,
     click:function(){
         debugger;
        this.clicked=true;
        console.assert(!(button.clicked),"The button has been clicked");
     }
 }
 var elem=document.getElementById("test");
 //error
 //elem.addEventListener("click",button.click,false);
 elem.addEventListener("click",bind(button,"click"),false);
 function bind(context,name){
     return function(){
      
        return context[name].apply(context,arguments);
     };
 }