怎么實現輸入年月日查詢是星期幾？
沒反應！
<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>單擊事件?</title>
<script?type="text/javascript">
????function?wwt()?{
????????var?tadays?=?new?Date(a,b,c);
????????a?=?document.getElementById("n1").value;
????????b?=?document.getElementById("n2").value;
????????c?=?document.getElementById("n3").value;
????????var?weekday=?["星期一",?"星期二",?"星期三",?"星期四",?"星期五",?"星期六",?"星期日"];
????????document.write(weekday[tadays.getDay()]);
????}
</script>
</head>
<body>
??<form>
????<input?type="text"?id="n1"?/>年<br?/>
????<input?type="text"?id="n2"?/>月<br?/>
????<input?type="text"?id="n3"?/>日<br?/>
????<input?name="點擊我"?onClick="wwt()"?type="button"?value="查詢"/>
??</form>
</body>
</html>
2016-01-13
a?=?document.getElementById("n1").value; b?=?document.getElementById("n2").value; c?=?document.getElementById("n3").value; var?tadays?=?new?Date(a,b,c);交換一下順序
2016-03-02
<!DOCTYPE?HTML> <html> <head> <meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/> <title>單擊事件?</title> <script?type="text/javascript"> ????function?wwt()?{ ???????? ????????a?=?document.getElementById("n1").value; ????????b?=?document.getElementById("n2").value-1; ????????c?=?document.getElementById("n3").value; ????????var?tadays?=?new?Date(a,b,c); ????????var?weekday=?["星期日",?"星期一",?"星期二",?"星期三",?"星期四",?"星期五",?"星期六"]; ????????document.getElementById("n4").value=weekday[tadays.getDay()]; ????} </script> </head> <body> ??<form> ????<input?type="text"?id="n1"?/>年<br?/> ????<input?type="text"?id="n2"?/>月<br?/> ????<input?type="text"?id="n3"?/>日<br?/> ????<input?name="點擊我"?onClick="wwt()"?type="button"?value="查詢"/><br?/> ????<input?type="button"?value="星期"> ????<input?type="text"?id="n4"?/> ??</form> </body> </html>2016-02-15
<!DOCTYPE?HTML> <html> <head> <meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/> <title>單擊事件?</title> <script?type="text/javascript"> ????function?wwt()?{ ????????var?a?=?document.getElementById("n1").value; ????????var?b?=document.getElementById("n2").value-1;//參數month的值比實際月份小1 ????????var?c?=?document.getElementById("n3").value; ????????var?tadays?=?new?Date(a,b,c); ????????var?weekns?=?["星期日",?"星期一",?"星期二",?"星期三",?"星期四",?"星期五",?"星期六"]; ????????document.write(weekns[tadays.getDay()]); ????} </script> </head> <body> ??<form> ????<input?type="text"?id="n1"?/>年<br?/> ????<input?type="text"?id="n2"?/>月<br?/> ????<input?type="text"?id="n3"?/>日<br?/> ????<input?name="點擊我"?onClick="wwt()"?type="button"?value="查詢"/> ??</form> </body> </html>