标签：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript">
Array.prototype.each = function(callback){
if(typeof callback === ‘function‘){
for(var i=0;i<this.length;i++){
callback(i,this[i]);
}
}
};
var arr = ["1",‘a‘,‘g‘];
function handler(i,o){
console.log(i+":"+o);
}
arr.each(function (i, o) {
if(i>1){
console.log(o);
}
});
arr.each(function () {
});
</script>
</head>
<body>
</body>
</html>
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原文地址：http://www.cnblogs.com/hwgok/p/5721742.html
