console 命令行工具 X clear

console

var score=100;
if(score>60){
    document.write("你通过测试");
}
document.write("<br/>-------------------<br/>");
 var score = 59;
        if (score < 60) {
            document.write("补考");
        } else {
            document.write("你通过测试");
        }
document.write("<br/>-------------------<br/>");
var time =14;
        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！");    //如果上面两个条件都不符合，则输出“晚上好！”
        }
document.write("<br/>-------------------<br/>");
var gender = "女";
        var height = 165;
        if(gender=="男")
        {
            if(height>170)
            {
                document.write("高个子男生");
            }
            else
            {
                document.write("矮个子男生");
            }
        }
        else
        {
            if (height > 170)
            {
                document.write("高个子女生");
            }
            else
            {
                document.write("矮个子女生");
            }
        }

document.write("<br/>-------------------<br/>");
//法一：判断数是不是整数
/*var num = 15;
        if (parseInt(num.toString()) == parseFloat(num.toString()))
        {
            document.write(num+ "是整数")
        }
        else
        {
            document.write(num+ "是小数")
        }
*/
//法二：函数判断
//判断15是不是整数
function isInteger(num){
    var result=false;
    if(parseInt(num) == parseFloat(num)){
        return true;
    }
    return result;
}
var num=15;
if(isInteger(num)){
    document.write(num+" is an integer."+"<br/>");
}else{
    document.write(num+" is not an integer."+"<br/>");
}

document.write("<br/>-------------------<br/>");
//判断数是不是小数
function isDecimal (num){
    var result=false;
    if(parseInt(num) != parseFloat(num)){
        return true;
    }
    return result;
}
var num=15.5;
if(isDecimal(num)){
    document.write(num+" is an decimal."+"<br/>");
}else{
    document.write(num+" is not an decimal."+"<br/>");
}


document.write("<br/>-------------------<br/>");
 //判断水仙花数
    function printDaffodiNum(){
        document.write("print daffodil number:"+"<br/>");
        for(var num=100;num<1000;num++){
            var a=num%10;//提取个位数
            var b=parseInt((num/10)%10);  /*提取十位数*/
            var c=parseInt(num/100);/*提取百位数*/
               if (num == (a * a * a + b * b * b + c * c * c)) 
            {
                //打印水仙花数
                document.write(num+"<br/>")
            }
        }
            
    }
    printDaffodiNum();

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