interface IObj {
value:string;
value2:string;
value3:number;
}
let obj={
value:"JS",
value2:"www.google.com",
value3:2018
}
type kM = "name"|"website"|"year";
const keyMap :{[key in kM]:keyof IObj}= {
name:"value",
website:"value2",
year:"value3"
}
const year:number = obj[keyMap["year"]]; // ERROR: Type 'string | number' is not assignable to type 'number'. Type 'string' is not assignable to type 'number'.
obj[keyMap["name"]] = "Javascript"; // ERROR: Type 'string' is not assignable to type 'never'.
我try 自定义映射或访问对象中的键,但遇到错误. 应该采取哪些步骤来解决上述错误?