已知script部分,如何编写出完整的代码,图片随意插入的情况下,获取系统时间分别进行提醒
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
// 0---23
var hourNum = new Date().getHours();
if (hourNum <= 12) {
document.write("上午好")
} else if (hourNum <= 18) {
document.write("下午好")
} else {
document.write("晚上好")
}
</script>
</body>
</html>
new Date().getHours()
https://www.jb51.net/w3school/js/jsref_getHours.htm
getHours 然后判断就行