console 命令行工具 X clear
console
<!DOCTYPE html> 
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <script>
        var score = 100;
        if (score > 60)
        {
            document.write(score + "<br/>");
        }


        var score = 100;
        if (score < 60) 
        {
            document.write("补考" + "<br/>");
        } 
        else
        {
            document.write("通过" + "<br/>");
        }

        
        var time = 21;
        if (time < 12)
        {
            document.write("早上好！");    //如果小时数小于12则输出“早上好！”
        }
        else if (time >=12 && time < 18)
        {
            document.write("下午好！");    //如果小时数大于等于12并且小于18，输出“下午好！”
        }
        else
        {
            document.write("晚上好！<br/>");    //如果上面两个条件都不符合，则输出“晚上好！”
        }


        function isInteger(num){
            var result = false;
            result = (parseInt(num)==parseFloat(num));
            if(result){
                document.write(num + "是整数" + "<br/>");
            }
            else{
                document.write(num + "不是整数" + "<br/>");
            }
            return result;
        }
        isInteger(13);
        isInteger(12.04);

        function printDaffodilNumber() 
        {

         document.write("Print out all daffodil number: " + "<br/>");

        for (var num = 100; num < 1000 ; num++)
        {
        var a = num % 10;
        var b = parseInt((num / 10) % 10);
        var c = parseInt(num / 100);

        //判断是否是水仙花数，并输出
        if(num==a*a*a+b*b*b+c*c*c)
        {
            document.write(num + "<br/>");
        }
        }
        }

printDaffodilNumber(); 

    </script>
</head>
<body>
</body>
</html>