TypeScript

1.枚举emun

enum Sex { //默认元素的下标从0开始递增(可指定)
    man = 1, 
    woman = 2
}
let sex1: Sex = Sex.man;
let sex2: Sex = Sex.woman;
console.log(sex1, sex2);
 let man:string = Sex[1];
 let woman:string = Sex[2];
 console.log(man, woman);
//编译结果
var Sex;
(function (Sex) {
    Sex[Sex["man"] = 1] = "man";
    Sex[Sex["woman"] = 2] = "woman";
})(Sex || (Sex = {}));
  var sex1 = Sex.man;
  var sex2 = Sex.woman;
  console.log(sex1, sex2);  //1 2
 
  var man = Sex[1];
  var woman = Sex[2];
  console.log(man, woman); //man woman
 

 

posted @ 2019-09-18 10:23  0恋晨曦0  Views(132)  Comments(0Edit  收藏  举报