<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="button" value="计算两数运算结果" onclick="computer()">
</body>
<script type="text/javascript">
function computer(){
var result;
var num1 = prompt("请输入第一个数");
var num2 = prompt("请输入第一个数");
var oper = prompt("请输入运算符");
switch (oper){
case "+":
result = parseInt(num1) +parseInt(num2);
break;
case "-":
result = num1 - num2;
break;
case "*":
result = num1 * num2;;
break;
case "/":
result = num1 / num2;;
break;
}
alert("计算结果为"+num1+oper+num2+"="+result);
}
</script>
</html>
用javascript实现使用prompt输入两个数和运算符号，并计算两个数的操作结果
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转载自blog.csdn.net/Shi_Yuan_Csdn/article/details/81949519
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