判断对象里面是否含有空的属性值

isObjEmpty(obj) {
      let flag = true;
      let arr = Object.keys(obj).map(function (i) {
        return obj[i]
      })
      let arr_v2 = [];
      for (let j of arr) {
        if (!j) {
          arr_v2.push(j)
        }
      }
      if (arr_v2.length == arr.length) {
        flag = true;
      }
      return flag
    }