1.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>作业1</title>
</head>
<body>
<!-- 1、 输入一个随机位数的数字(10位以内)，逆序打印输出各位数是多少
如：输入：8273842
输出：
2
4
8
3
7
2
8
-->
<script>
var inputNum=prompt();
var arr=new Array();
for(var i=0;i<inputNum.length;i++){undefined
arr[i]=inputNum.charAt(i);
}
arr.reverse();
for(var i=0;i<arr.length;i++){undefined
console.log(arr[i]);
}
</script>
</body>
</html>
2.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
var inputNum=prompt();
var i ;
var j;
for ( i=0; i <=inputNum; i++) {undefined
for( j=0; j<=inputNum;j++){undefined
if((i+j)==inputNum){undefined
console.log(i+"+"+j+"="+inputNum);
}
}
}
</script>
</body>
</html>
B
C
B
A
B
D
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