js深度克隆deepClone

　　function deepClone(origin, target) {
      var target = target || {},
      toStr = Object.prototype.toString,
      arrStr = "[object Array]";

      for (var prop in origin) {
        if (origin.hasOwnProperty(prop)) {
          if (origin[prop] !== null && typeof (origin[prop]) == 'object') {
            target[prop] = toStr.call(origin[prop]) == arrStr ? [] : {};
            deepClone(origin[prop], target[prop])
          }else {
            target[prop] = origin[prop]
          }
        }
      }
      return target;
    }