js的深拷贝，浅拷贝

var china = {
    nation : '中国',
    birthplaces:['北京','上海','广州'],
    skincolr :'yellow',
    friends:['sk','ls']
}
//深复制，要想达到深复制就需要用递归
function deepCopy(o,c){
    var c = c || {}
    for(var i in o){
        if(typeof o[i] === 'object'){
            //要考虑深复制问题了
            if(o[i].constructor === Array){
                //这是数组
                c[i] =[]
            }else{
                //这是对象
                c[i] = {}
            }
            deepCopy(o[i],c[i])
        }else{
            c[i] = o[i]
        }
    }
    return c
}
var result = {name:'result'}
result = deepCopy(china,result)
console.dir(result)

var test ={
    name:{
        xing:{
            first:'张',
            second:'李'
        },
        ming:'老头'
    },
    age :40,
    friend :['隔壁老王','宋经纪','同事']
}
var result = JSON.parse(JSON.stringify(test))
result.age = 30
result.name.xing.first = '往'
result.friend.push('fdagldf;ghad')
console.dir(test)
console.dir(result)