演示代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script type="text/javascript">
// 1,加+、减-、乘*、除/、取余%
var a = 6+2;
var a = 6-2;
var a = 6*2;
var a = 6/2;
// 以下取余,两数相除得到的余数
var a = 6%4;
document.write(a);
</script>
</head>
<body>
</body>
</html>