The example in this article introduces the detailed code of the cascade date selection operation of JavaScript time operation. It is shared with everyone for your reference. The specific content is as follows
Rendering:
Specific code:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>年月日星期级联</title>
</head>
<body topmargin="10" leftmargin="0">
<form>
<select id=year onchange="toDate();">
<script>for(i=1970;i<=2010;i++)document.write("<option>"+i+"</option>")</script>
</select>
<select id=month onchange="toDate();">
<script>for(i=1;i<=12;i++)document.write("<option>"+i+"</option>")</script>
</select>
<select id=day onchange="toDay();"></select>
<input name=weekday>
</form>
<script type="text/javascript">
var arr="日一二三四五六".split("")
function toDate(){
with(document.all){
vYear=parseInt(year.options[year.selectedIndex].text)
vMonth=parseInt(month.options[month.selectedIndex].text)
day.length=0;
for(i=0;i<(new Date(vYear,vMonth,0)).getDate();i++){day.options[day.length++].value=day.length;day.options[day.length-1].text=day.length;}
}
toDay();
}
function toDay(){
vDay=parseInt(document.all.day.options[document.all.day.selectedIndex].value)
document.all("weekday").value="星期"+arr[new Date(vYear,vMonth-1,vDay).getDay()]
}
window.onload=toDate;
</script>
</body>
</html>
I hope this article will be helpful to everyone learning JavaScript programming.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
