javascript - 清除设定间隔

Question

 setInterval(function hello() {
  console.log('hello world');
  return hello;
}(), 6000);

如何清除间隔，我尝试添加 var 间隔

var i =0;
var interval = setInterval(function hello() {
  console.log('world');
  if(++i == 3) clearInterval(interval);
  return hello;
}(), 5000);

但是没有成功。感谢您的帮助。

Answer 1

clearInterval() 当然有效。以下代码行有错误:

    }(), 5000);
   //^^ remove () as this is not IIFE