JavaScript时间操作之年月日星期级联操作代码

2016-01-16 网页编程网 网页编程网

<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>年月日星期级联</title></head><body topmargin="10" leftmargin="0"> 
<form> 
<select id=year onchange="toDate();"> 
<script>for(i=1990;i<=2020;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>

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