Ctrl+/
IE11
F11
ESC
PgUp
PgDn
<!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=gb2312" />
<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>
function compute(var opp1,var opp2,var sign)
{
var result;
switch(sign)
case "+":
result=opp1+op2;
document.write("两数运算结果为: +result);
case "-":
CSS代码...
JS代码...
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