遍历数组将对象push()到新数组里面，在vue里面一直出错

Question

需求：遍历数组，用if判断选出符合要求的对象，然后把它push到新的数组里面

上代码：
GetAlbumList() {

    let uid = this.$route.query.Uid
    this.$http.get(url, {params: {
      '': this.userInformation
    }}).then((res) => {
      this.aList = res.data.Data.List
      for (let i = 0; i < this.aList.length; i++) {
        if (this.aList[i].Access != 0) {
          console.log(this.aList[i])
          this.albumNameList.push(this.aList[i])
        }
      }
    })
  }
  
 console.log出来的对象都是正确的，在if里面使用push就报错了，除去if条件，用push就不报错了，但是这样又租不到需求，请问这是什么原因？

Answer 1

    let uid = this.$route.query.Uid
    this.$http.get(url, {params: {
      '': this.userInformation
    }}).then((res) => {
      this.aList = res.data.Data.List;
      if (!this.albumNameList) this.albumNameList = [];
      for (let i = 0; i < this.aList.length; i++) {
        if (this.aList[i].Access != 0) {
          console.log(this.aList[i])
          this.albumNameList.push(this.aList[i])
        }
      }
    })
  }