In 4. Greatest Common Divisor of JS: Interview Algorithm part -1: beginner, you mentioned a fancy algorithm that you don't understand.

It is called Euclidean Algorithm. I am thinking that you probably should give a link here so that readers can read and understand. You can link to the Wikipedia

要求：

1、只能修改 setTimeout 到 Math.floor(Math.random() * 1000 的代码

2、不能修改 Math.floor(Math.random() * 1000

3、不能使用全局变量

function print(n){
  setTimeout(() => {
    console.log(n);
  }, Math.floor(Math.random() * 1000));
}
for(var i = 0; i < 100; i++){
  print(i);
}  

📚在线阅读:纯JS监听document是否加载完成 - No.46

跨浏览器且纯JavaScript检测document是否加载完成的方法是使用readyState.

if (document.readyState === 'complete') {
  // 页面已完全加载
}

这样可以在document完全加载时监测到……

let stateCheck = setInterval(