賦值語句的返回值為賦值結果:
let Color = {}; Color[Color["Red"] = 0] = "Red"; console.log('賦值返回值', Color["Red"] = 0 ); //0 console.log('這個對象', Color); // {0: "Red", Red: 0} let test; console.log('變量賦值',test = 666); //666
總結:賦值語句(表達式的值)的返回值為賦值結果!!!
尷尬 我竟然不知道 ^_^