JS浅copy和深copy

copy.js

//深拷贝
function deepCopy(obj){
  if(typeof obj != 'object') {
    return obj;
  }
  
  var newObj = {};
  
  for(var attr in obj) {
    newObj[attr] = deepCopy(obj[attr]);
  }
  
  return newObj;
}
//浅拷贝
function copy(obj){
  
  var newObj = {};
  
  for(var attr in obj){
    newObj[attr] = obj[attr];
  }
  
  return newObj;
}