编写一个带有两个变量和一个运算符的函数，调用时接收prompt输入
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<title>编写一个带有两个变量和一个运算符的函数，调用时接收prompt输入</title>
<script language="javascript" type="text/javascript">
function account()
{var op1=prompt("请输入第一个数：","");var op2=prompt("请输入第二个数：","");var sign=prompt("请输入运算符号","")var result;opp1=parseFloat(op1);opp2=parseFloat(op2);switch(sign){case "+":result=opp1+opp2;break;case "-":result=opp1-opp2;break;case "*":result=opp1*opp2;break;default:result=opp1/opp2;}alert("两数运算结果为："+op1+sign+op2+"="+result);
}
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<input name="btn" type="button" value="计算两数运算结果" onclick="account();" />
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