Elementor #1640

如何在JavaScript中写枚举

像这样定义你的枚举:

var SizeEnum = {
  SMALL: 1,
  MEDIUM: 2,
  LARGE: 3,
};

然后他们用起来是这样的:

var mySize = SizeEnum.SMALL;

如果你想让枚举值持有属性,你可以把他们加到一个额外的属性上面:

var SizeEnum = {
  SMALL: 1,
  MEDIUM: 2,
  LARGE: 3,
  properties: {
    1: {name: "small", value: 1, code: "S"},
    2: {name: "medium", value: 2, code: "M"},
    3: {name: "large", value: 3, code: "L"}
  }
};

他们用起来像这样:

var mySize = SizeEnum.MEDIUM;
var myCode = SizeEnum.properties[mySize].code; // myCode == "M"

作者：ChuckWang
链接：https://www.jianshu.com/p/76fc5ffa9279
來源：简书
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