Question

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！

另一个，用javascript编写，分别定义学号，姓名，成绩，用alert输出，某学号，某某的成绩为XX。感激不尽

Answer 1

<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()" />

Answer 2

var a,b=0;
alert(a*b);
var stunum = "QF515";
var stuname = "xxxx";
var score = 98;
alert(stunum+stuname+score);