用javascript编写 定义三个变量并赋值,求他们的乘积,用alert语句输出 感谢！

JavaScript08

用javascript编写 定义三个变量并赋值,求他们的乘积,用alert语句输出 感谢！,第1张

<script type="text/javascript">

function sum() {

var a = 5

var b = 3

var c = 2

var d

d = a * b * c

alert("三个数的乘积为：" + d)

}

function search() {

var number = 2012601

var name = "张三"

var score = 95

alert(number+"学号："+name+"的成绩为："+score)

}

</script>

<input type="button" value="乘积" onclick="sum()" />

<input type="button" value="查询成绩" onclick="search()" />

用onkeyup效果能好点吧 一下

---------------

<html>

<head>

<meta http-equiv="Content-Type" content="text/htmlcharset=GB18030">

<title>Insert title here</title>

</head>

<script type="text/javascript">

function account()

{

var a=document.all.a.value

var b=document.all.b.value

var c=a*b

document.all.c.value=c

}

</script>

<body>

单价：<input id="a" type="text" value="60">

数量：<input id="b" type="text" onkeyup="account()">

总和 <input id="c" type="text">

<input type="button" onclick="account()" value="计算">

</body>

</html>