1、区别
2、示例代码
<!DOCTYPE html><html lang="zh"> ???<head> ???????<meta charset="UTF-8" /> ???????<meta name="viewport" content="width=device-width, initial-scale=1.0" /> ???????<meta http-equiv="X-UA-Compatible" content="ie=edge" /> ???????<title>js setTimeout和setInterval区别</title> ???</head> ???<body> ???????<script type="text/javascript"> ???????????let scriptBegin = Date.now(); ???????????//fun1(); ???????????fun2(); ???????????//需要执行20ms的程序 ???????????function act(functionName) { ???????????????console.log(functionName, Date.now() - scriptBegin); ???????????????let begin = Date.now(); ???????????????while(Date.now() - begin < 20); ???????????} ???????????// ???????????function fun1 () { ???????????// ???????????????let fun3 = ()=>{act(‘fun3‘)} ???????????// ???????????????setTimeout(fun3,20); ???????????// ???????????????act(‘fun1‘) ???????????// ???????????} ???????????function fun2() { ???????????????act(‘fun2-1‘) ???????????????let fun4 = () => { ???????????????????act(‘fun4‘) ???????????????} ???????????????setInterval(fun4, 20); ???????????????act(‘fun2-2‘) ???????????} ???????</script> ???</body></html>注：可以分别执行fun1和fun2查看执行顺序。
js setTimeout和setInterval区别
原文地址：https://www.cnblogs.com/mengfangui/p/9765539.html