<!DOCTYPE html>
<html>
<head>
<title>if練習(xí)一</title>
<meta charset="utf-8">
<script type="text/javascript">
/*
* 從鍵盤輸入小明的期末成績:
* 當(dāng)成績?yōu)?00時(shí)，'獎(jiǎng)勵(lì)一輛BMW'
* 當(dāng)成績?yōu)閇80-99]時(shí)，'獎(jiǎng)勵(lì)一臺(tái)iphone15s'
* 當(dāng)成績?yōu)閇60-80]時(shí)，'獎(jiǎng)勵(lì)一本參考書'
* 其他時(shí)，什么獎(jiǎng)勵(lì)也沒有
*/
var score = prompt('請(qǐng)輸入小明的期末成績（0——100：')
alert(score)
if(score == 100){
alert('獎(jiǎng)勵(lì)一輛BMW');
}
else if(score<100 && score>=80){
alert('獎(jiǎng)勵(lì)一臺(tái)iphone15s');
}
else if(score<80 && score>=60){
alert('獎(jiǎng)勵(lì)一本參考書');
}
else{
alert('什么也沒有');
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>if練習(xí)2</title>
<script type="text/javascript">
/*
* 大家都知道，男大當(dāng)婚，女大當(dāng)嫁。那么女方家長要嫁女兒，當(dāng)然要提出一定的條件：
* 高：180cm以上; 富:1000萬以上; 帥:500以上;
* 如果這三個(gè)條件同時(shí)滿足，則:'我一定要嫁給他'
* 如果三個(gè)條件有為真的情況，則:'嫁吧，比上不足，比下有余。'
* 如果三個(gè)條件都不滿足，則:'不嫁！'
*/
var gao = prompt('請(qǐng)輸入您的身高')
alert(gao)
var fu = prompt('請(qǐng)輸入您的資產(chǎn)')
alert(fu)
var shuai = prompt('請(qǐng)輸入您的顏值')
alert(shuai)
if(gao > 180 && fu>10000000 && shuai>500){
alert('我一定要嫁給他');
}
else if(gao > 180 || fu>10000000 || shuai>500){
alert('嫁吧，比上不足，比下有余。');
}
else{
alert('不嫁！');
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>if練習(xí)3</title>
<script type="text/javascript">
/*
* 編寫程序，由鍵盤輸入三個(gè)整數(shù)分別存入變量num1、num2、num3，
* 對(duì)他們進(jìn)行排序，并且從小到大輸出。
*/
var num1 = parseInt(prompt('請(qǐng)輸入您要輸入的數(shù)字'))
var num2 = parseInt(prompt('請(qǐng)輸入您要輸入的數(shù)字'))
var num3 = parseInt(prompt('請(qǐng)輸入您要輸入的數(shù)字'))
if(num1>num2&&num2>num3){
var str = [num3,num2,num1]
alert(str);
}
else if(num1>num3&&num3>num2){
var str = [num2,num3,num1]
alert(str);
}
else if(num2>num1&&num1>num3){
var str = [num3,num1,num2]
alert(str);
}
else if (num2>num3&&num3>num1){
var str = [num1,num3,num2]
alert(str);
}
else if (num3>num2&&num2>num1){
var str = [num1,num2,num3]
alert(str);
}
else if (num3>num1&&num1>num2){
var str = [num2,num1,num3]
alert(str);
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>switch練習(xí)1</title>
<script type="text/javascript">
/*
* 對(duì)于成績大于等于60分的，輸出'合格'。低于60分的，輸出'不合格'
*/
var score = parseInt(prompt('請(qǐng)輸入您的分?jǐn)?shù)'))
var a = score>=60
switch(a){
case true:
alert('合格')
break;
case false:
alert('不合格')
break;
}
</script>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>switch練習(xí)2</title>
<script type="text/javascript">
/*
* 從鍵盤接收整數(shù)參數(shù)，如果該數(shù)為1-7，打印對(duì)應(yīng)的星期，否則打印非法參數(shù)。
*/
var today = parseInt(prompt('今天星期幾'))
var i = (today <= 7 && today>=1)
switch(i){
case true:
alert('星期'+ today)
break;
case false:
alert('非法參數(shù)')
break;
}
</script>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var a = 1000;
var b = 0;
while(a<=5000){
a=a*1.05;
b++
}
console.log(b);
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var num=prompt('請(qǐng)輸入今天星期幾');
switch(num){
case '1':
alert('星期一');
break;
case '2':
alert('星期二');
break;
case '3':
alert('星期三');
break;
case '4':
alert('星期四');
break;
case '5':
alert('星期五');
break;
case '6':
alert('星期六');
break;
case '7':
alert('星期日');
break;
default:
alert('非法參數(shù)');
break;
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var i = 0
for (var z = 1;z<=100;z++){
if(z%2 != 0){
i += z
}
}
alert(i)
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var num = [];
for(var i = 1;i<=100;i++){
if(i%7 == 0){
num.push(i);
}
}
a=num.length
alert(a);
var z = 0
for (var s=0;s<a;s++){
z += (num[s])
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var num = [];
for (var i=100;i<1000;i++){
var a = parseInt(i/100)
var b = parseInt((i-a*100)/10)
var c = i%10
if ((a**3 + b**3 + c**3)==i){
num.push(i)
}
}
alert(num.length);
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var i = prompt('請(qǐng)輸入整數(shù)')
if (i<=1){
alert('這不是質(zhì)數(shù)');
}
else if (i == 2){
alert('這是質(zhì)數(shù)')
}
else{
for(var j = 2;j<i;j++){
if (i%j == 0){
alert('這不是質(zhì)數(shù)')
break;
}
else{
alert('這是質(zhì)數(shù)')
break;
}
}
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var str=''
for(var i = 1;i<10;i++){
for(var j=1;j<10;j++){
str += (i +'*' +j+'='+(i*j)+' ')
}
str += '<br/>'
}
document.write(str)
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
for(var i=2;i<=100;i++){
for(var j=2;j<i;j++){
if(i%j==0){
break;
}
}
if(i<=j){
document.write(i+" ");
}
}
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
var money = 1000;
var year = 0;
while(money <= 5000){
money *= 1.05;
year += 1;
}
document.write(year)
</script>
</head>
<body>
</body>
</html>
