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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<title></title>
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<body>
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