console 命令行工具 X clear

console

function myFunction(){
	let dangq = new Date().getTime();
    let dangqe = new Date().getTime();
    let sss = dangqe * dangq;
    let times = 1
    console.log(sss);

    if(times < 3280501291926){
        alert("再别康桥")
    }else{
        alert("sb")
    }
}

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>

<p>点击按钮，显示确认框。</p>
<button onclick="myFunction()">点我</button>
<p id="demo"></p>
<script>

</script>

</body>
</html>