javascript 闭包

常见闭包错误

==html==

```

html
```
<div id="div1">aaa</div>
<div id="div2">bbb</div>
<div id="div3">ccc</div>
```

++想要点击aaa出现1，bbb2，ccc3...++

==常见错误js==

```

for (var i = 1; i < 4; i++) {
   document.getElementById(‘div‘ + i).addEventListener(‘click‘, function () {
      console.log(i)
   });
}

```

==改正==

```

for (var i = 1; i < 4; i++) {
   !function (i) {
      document.getElementById(‘div‘ + i).addEventListener(‘click‘, function () {
         console.log(i)
      });
   }(i)
}

```

javascript 闭包

原文：http://www.cnblogs.com/luckstart/p/5204629.html