JavaScript进阶篇6-11运行没有结果
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>1</title>
<script type="text/javascript">
function count(){
var v1=document.getElementById("tet1").value;
var v2=document.getElementById("tet2").value;
var v3=document.getElementById("select").value;
var v4;
switch(v3)
{
case "+":
v4=parseFloat(v1)+parseFloat(v2);
break;
case "-":
v4=parseFloat(v1)-parseFloat(v2);
break;
case "*":
v4=parseFloat(v1)*parseFloat(v2);
break;
case "/":
v4=parseFloat(v1)/parseFloat(v2);
break;
default:
break;
}
document.getElementById("fruit").value=v4;
}
</script>
</head>
<body>
<input type='text' id='txt1' />
<select id='select'>
<option value='+'>+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type='text' id='txt2' />
<input type='button' value=' = ' onclick="count()" />
<input type='text' id='fruit' />
</body>
</html>
程序猿啦3回答
-
哇妙012
v1,v2 获取的id名写错啦 -
慕的地8582982
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相关分类
JavaScript