console 命令行工具 X clear

console

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script>
var num1 = prompt('请输入第一个数');
var num2 = prompt('请输入第二个数');
if (num1 > num2) {
  alert(num1);
} else if (num2 > num1) {
  alert(num2);
} else {
  alert('null');
}
</script>
</head>
<body>
</body>
</html>