使用字面量语法创建数组
//good var items = []; //bad var items = new Array();
var items = [];
//good
items.push('abc');
//bad
items[items.length] = 'abc';var len = items.length ;
var itemsCopy = [];
var i;
//good
itemsCopy = items.slice();
//bad
for(i=0;i<len;i++){
itemCopy = items[i];
}function tranA(){
var args = Array.prototype.slice.call(arguments);
}原文:http://blog.csdn.net/princeterence/article/details/45693713