为什么运行总是出现最后一个提示？
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function myweek()
{
var mynum=document.getElementById("com");
switch(mynum)
{
case "1":
document.write("吃一个糖");
break;
case "2":
document.write("吃两个糖");
break;
case "3":
document.write("吃三个糖");
break;
case "4":
document.write("吃四个糖");
break;
case "5":
document.write("吃五个糖");
break;
case "6":
document.write("吃六个糖");
break;
default:
alert("你输入的数只能是在1-6之间的数值");
}
}
</script>
</head>
<body>
<h5>今天是星期几</h5>
<input type="text" id="com" />
<br/><br/>
<input type="button" name="button" value="确定" onclick="myweek()"/>
</body>
</html>
想飞的鱼儿浏览 1361回答 3
3回答
-
echo_kinchao
您的值没有写呢 -
王聪Fire
var mynum=document.getElementById("com").value;你漏写了个value -
ttang
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title><script type="text/javascript">function myweek(){var mynum=document.getElementById("com").value;switch(mynum){case "1":document.write("吃一个糖");break;case "2":document.write("吃两个糖");break;case "3":document.write("吃三个糖");break;case "4":document.write("吃四个糖");break;case "5":document.write("吃五个糖");break;case "6":document.write("吃六个糖");break;default:alert("你输入的数只能是在1-6之间的数值");}}</script></head><body><h5>今天是星期几</h5><input type="text" id="com" /><br/><br/><input type="button" name="button" value="确定" onclick="myweek()"/></body></html>当然得要把文本框里的值传进去啊
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相关分类
JavaScript