javascript setTimeout(function(){}),setTimeout(()=＞{})

两种不同的书写风格。

1.setTimeout(function(){})

2.setTimeout(()=>{})

JavaScript Functions
setInterval() with a Callback

Wait 3 seconds (3000 milliseconds) for this page to change.

代码在线演示。https://bamboobook.w3spaces-preview.com/setTimeout.html