Safari浏览器无法正常运行我的代码？

Question

我有以下课程：

class Portal {

  caption = "";
  thumbnailURL = "";
  profileImgURL = "";
  mp3 = "";
  timestamp = 0.0;
  username = "";
  uid = "";
  num = 0;
  // var caption = new String();
  // var caption = "";
  // var thumbnailURL = "";
  // var profileImgURL = "";

  constructor(cap, thumb, prof, mp3, timestamp, username, uid) {
    this.caption = cap;
    this.thumbnailURL = thumb;
    this.profileImgURL = prof;
    this.mp3 = mp3;
    this.timestamp = timestamp;
    this.username = username;
    this.uid = uid;
  }
}

[当我在野生动物园浏览器上运行时，出现两个以下错误。

SyntaxError：意外令牌'='。在方法的参数列表之前应以'（'开头。

然后尽管在main.js脚本之前运行了门户网站类的脚本，但我得到了这个：

未处理的承诺拒绝：ReferenceError：找不到变量：Portal

我该如何解决？

Answer 1

Class field declarations are not finalised，所以我认为Safari尚不支持它们。 – VLAZ 3分钟前

所有需要的是：

class Portal {

  constructor(cap, thumb, prof, mp3, timestamp, username, uid) {
    this.caption = cap;
    this.thumbnailURL = thumb;
    this.profileImgURL = prof;
    this.mp3 = mp3;
    this.timestamp = timestamp;
    this.username = username;
    this.uid = uid;
  }
}