回答編集履歴
2
ソース修正
test
CHANGED
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@@ -55,3 +55,63 @@
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55
55
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</tr>
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56
56
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57
57
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```
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58
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+
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59
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+
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60
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+
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61
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+
または、idを使ってstatusをトグルする要素を指定してもええ。修正箇所は、上に同じ２箇所や。
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62
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+
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63
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+
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64
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+
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65
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+
```diff
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66
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+
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67
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+
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68
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+
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69
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+
setTodos(newTodos.map((e, i) => ({ ...e, id: i + 1 })));
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70
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+
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71
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+
};
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72
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+
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73
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+
- const toggle = () => {
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74
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+
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75
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+
- setComment((prevState) => !prevState);
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76
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+
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77
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+
+ const toggle = (todoId) => {
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78
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+
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79
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+
+ setTodos(todos.map((todo, i) =>
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80
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+
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81
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+
+ todoId === todo.id ? {
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82
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+
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83
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+
+ ...todo,
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84
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+
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85
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+
+ status: todo.status === 'incomplete' ? 'completed' : 'incomplete', // completed は「完了」を表す
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86
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+
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87
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+ } : todo));
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88
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+
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89
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+
};
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90
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+
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91
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+
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92
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+
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93
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+
return (
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94
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+
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95
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+
```
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96
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+
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97
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+
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98
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+
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99
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+
```diff
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100
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+
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101
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+
<td>{todo.id}</td>
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102
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+
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103
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+
<td>{todo.comment}</td>
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104
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+
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105
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+
<td>
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106
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+
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107
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+
- <button onClick={toggle}>{comment ? "作業中" : "完了"}</button>
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108
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+
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109
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+
+ <button onClick={() => toggle(todo.id)}>{todo.status === 'incomplete' ? "作業中" : "完了"}</button>
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110
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+
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111
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+
<button onClick={() => handleDelete(index)}>削除</button>
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112
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+
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113
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+
</td>
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114
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+
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115
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+
</tr>
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116
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+
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117
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+
```
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1
ソース修正
test
CHANGED
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@@ -3,6 +3,12 @@
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3
3
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4
4
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5
5
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```diff
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6
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+
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7
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+
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8
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+
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9
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+
setTodos(newTodos.map((e, i) => ({ ...e, id: i + 1 })));
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10
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+
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11
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+
};
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6
12
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7
13
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- const toggle = () => {
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8
14
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@@ -20,14 +26,32 @@
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20
26
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21
27
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+ } : todo));
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22
28
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29
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+
};
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30
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+
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31
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+
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32
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+
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33
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+
return (
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34
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+
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23
35
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```
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24
36
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25
37
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26
38
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27
39
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```diff
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28
40
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41
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+
<td>{todo.id}</td>
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42
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+
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43
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+
<td>{todo.comment}</td>
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44
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+
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45
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+
<td>
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46
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+
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29
47
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- <button onClick={toggle}>{comment ? "作業中" : "完了"}</button>
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30
48
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31
49
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+ <button onClick={() => toggle(index)}>{todo.status === 'incomplete' ? "作業中" : "完了"}</button>
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32
50
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51
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+
<button onClick={() => handleDelete(index)}>削除</button>
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52
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+
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53
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+
</td>
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54
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+
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55
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+
</tr>
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56
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+
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33
57
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```
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