JS中三元运算符 冒号: 后可以写多条语句吗？

Question

当问号？前表达式不满足时，需要运行两条语句。请问需要冒号:后要怎么写？

let s = document.getElementById('mainContent').style;
s.opacity = 1;
(function fade(){
(s.opacity-=.1)<0?s.display="none":{setTimeout(fade,100);console.log(123);}
})();

这样写会报错。只能用if-else了吗？

Answer 1

Can multiple statements be written after the colon: in the ternary operator in JS? -PHP Chinese website Q&A-Can multiple statements be written after the ternary operator colon: in JS? -PHP Chinese website Q&A

Let’s take a look and learn.

Answer 2

用自执行匿名函数

var time = +new Date()
var result = time % 2 === 0 ? 'ok' : (_ => {
  time = +new Date()
  console.warn(time)
  return 'no'
})()

console.info(result)