选择时间计算星期几
下面为效果显示
脚本说明: 把如下代码加入<body>区域中 <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> 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>