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大佬們，我的代碼還能在精簡一些嗎？我感覺我的代碼很冗余。。。。。

<!DOCTYPE?html>

<html?lang="en">

<head>

????<meta?charset="UTF-8">

????<meta?name="viewport"?content="width=device-width,?initial-scale=1.0">

????<title>Document</title>

????

</head>

<body>

????<h1>操作成功</h1>?

????<br>

????<span?id="miaoshu">5秒后返回主頁</span>

????<a?>返回</a>

????<script>

????????var?num?=?4;

????????function?time_count(){

????????????document.getElementById("miaoshu").innerHTML?=?num+"秒后返回主頁";

????????????num?=?num-1;

????????????if(num<0){

????????????????window.location.?;

????????????}

????????}

????????

????????function?Goback(){

????????????window.history.back();

????????}

????????

????????var?i?=?setInterval(time_count,1000);

????????

????</script>

</body>

</html>

qq_慕少8309659

2020-05-09

源自：JavaScript進階篇 8-17

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2 回答

慕后端7000069
2020-07-19

<!DOCTYPE?html>
<html?lang="en">
<head>
????<meta?charset="UTF-8">
????<title>編程練習</title>
</head>
<body>
????<h1>操作成功</h1>
????<p><span?id="time"></span>秒后返回主頁<a?>返回</a></p>
</body>
<script>
????var?time?=?document.getElementById("time");
????var?i?=?5;
????function?count_Time()?{
????????time.innerText?=?i;
????????i?-=?1;
????????if?(i?<?0){
????????????location.assign("http://baidu.com");
????????????return;
????????}
????????setTimeout(count_Time,1000);
????}

????count_Time();
</script>
</html>