回答編集履歴
2
2
test
CHANGED
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@@ -77,3 +77,39 @@
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77
77
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}
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78
78
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79
79
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```
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80
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+
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81
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+
--- 追記 ---
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82
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+
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83
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+
もしすきに書いていいなら
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84
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+
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85
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+
```javascript
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86
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+
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87
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+
function age2class(n) {
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88
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+
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89
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if(isNaN(n)) return "入力エラー";
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90
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+
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91
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+
let age = parseInt(n);
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92
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+
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93
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+
if (age<20) {
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94
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+
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95
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if (age >=6 && age<=15) return "義務教育";
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96
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+
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97
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return "未成年";
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98
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+
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99
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} else {
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100
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+
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101
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if (age>=65) return "高齢者";
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102
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+
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103
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return "成人";
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104
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+
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105
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+
}
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106
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+
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107
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}
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108
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+
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109
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+
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110
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+
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111
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let text = prompt("年齢は？");
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112
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+
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113
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document.write(age2class(text) + "です");
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114
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+
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115
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```
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1
1
test
CHANGED
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@@ -35,3 +35,45 @@
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35
35
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```
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36
36
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37
37
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てことでしょうか。
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38
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+
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39
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+
--- 追記 ---
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40
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+
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41
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+
バランス的にはこんな感じがいいかもしれません。
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42
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+
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43
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+
```javascript
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44
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+
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45
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let text = prompt("年齢は？");
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46
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+
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47
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if(! isNaN(text)) {
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48
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+
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49
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+
let age = parseInt(text);
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50
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+
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51
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+
if(age<20) {
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52
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+
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53
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if (age >=6 && age<=15){
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54
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+
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55
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document.write("義務教育です");
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56
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+
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57
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} else {
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58
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+
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59
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document.write("未成年です");
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60
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+
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61
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}
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62
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+
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63
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} else {
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64
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+
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65
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if(age>=65){
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66
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+
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67
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document.write("高齢者です");
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68
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+
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69
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+
} else {
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70
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+
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71
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+
document.write("成人です");
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72
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+
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73
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+
}
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74
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+
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75
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+
}
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76
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+
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77
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+
}
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78
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+
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79
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+
```
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