Tencent recently was watching a js knowledge inside the classroom learning videos, and then there is a deep copy of the question, so he did a little, use arguments.callee achieve a deep copy.
<script type="text/javascript">
var obj = {
"name":"小二",
"age":18,
"sex":"man",
"grade":{
"Arts Comprehensive":{
"History": 100,
"Politics": 80
},
"Comprehensive Li": {
"Physics": 87,
"Chemistry": 68
}
},
"hobby":[[1,1,5,4],[2,3,4,5],[8,7,9,8]]
};
was obj1 = {};
// implement deep copy
function copyObject(o1,o2){
was objc1 = O1;
was objc2 = O2;
for( prop in objc1){
if(typeof(objc1[prop])+""!=="object"){
// copy of the original value
objc2 [near] = objc1 [near];
}else if(Object.prototype.toString.call(objc1[prop])+""==="[object Array]"){
// copy array
objc2 [near] = [];
arguments.callee(objc1[prop],objc2[prop])
}
else{
// copy of the object
objc2 [near] = {};
arguments.callee(objc1[prop],objc2[prop])
}
}
return objc2;
}
console.log (obj); // original object
console.log (copyObject (obj, obj1)); // the copy target
</script>
Achieve results:
