存储类型
<script>
var obj1={
name: "jack",
age : 18
}

var obj2 = obj1

obj2.name = "tiechui" //修改obj2里的name值，同时也修改了对象obj

console.log(obj1, obj2)

var obj3 = {name : "houdali"}
var obj4 = {name : "houdali"}
console.log(obj3===obj4) // obj3===obj4--->false

var obj5 = {
name : "houdali",
age : 49,
loaction : "hefei"
}

var obj6 = {}
for (var i in obj5){
obj6[i] = obj5[i]
}
console.log(obj5, obj6)
console.log(obj5 === obj6)
</script>