//命名空间
//利用闭包防止变量污染
1 var name = ‘bcd‘; 2 var init = (function () { 3 var name = ‘abc‘; 4 function callName() { 5 console.log(name) 6 } 7 return function () { 8 callName(); 9 } 10 }()); 11 init(); 12 var li = { 13 wife1 : {name:"l"}, 14 wife2 : {name:"x"}, 15 wife3 : {name:"w"}, 16 wife4 : {name:"z"}, 17 sayWife : function (num) { 18 return this[‘wife‘ + num] 19 } 20 }
//对象枚举
var obj = {
name: ‘li‘,
age: 12,
height: 175,
weight: 75
};
//遍历 枚举
for (var i in obj) {
console.log(i);
}
原文：https://www.cnblogs.com/punisher999/p/12229365.html