js对象或json对象深拷贝

/** * 深拷贝js对象 * @param obj * @returns {{}} *  Created by shantao on 2016/2/1. */var deepCopy = function(obj) {  var newO = {};  if (obj instanceof Array) {    newO = [];  }  for ( var key in obj) {    var val = obj[key];    newO[key] = typeof val === 'object' ? arguments.callee(val) : val;  }  return newO;}