回答編集履歴
2
調整
test
CHANGED
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@@ -36,3 +36,57 @@
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36
36
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</div>
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37
37
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</form>
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38
38
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```
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39
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+
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40
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+
# エラーはエラーとする
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41
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+
```javascript
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42
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<script>
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43
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window.addEventListener('DOMContentLoaded', ()=>{
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44
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document.querySelector('#__send').addEventListener('click', e=>{
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45
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e.preventDefault();
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46
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+
const y=select_year.value;
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47
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+
const m=select_month.value;
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48
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+
const d=select_day.value;
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49
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if(y==""){
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50
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select_year.focus();
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51
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alert('年を選んでください');
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52
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return false;
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53
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}
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54
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if(m==""){
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55
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select_month.focus();
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56
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alert('月を選んでください');
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57
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return false;
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58
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}
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59
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if(d==""){
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60
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select_day.focus();
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61
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alert('日を選んでください');
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62
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return false;
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63
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}
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64
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console.log([y,m,d]);
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65
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});
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66
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});
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67
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</script>
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68
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+
<form method="post">
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69
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<select name="e_33[year]" id="select_year">
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70
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<option value="">年</option>
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71
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<option value="2022">2022年</option>
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72
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+
<option value="2023">2023年</option>
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73
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</select>
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74
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+
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75
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+
<select name="e_33[month]" id="select_month">
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76
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<option value="">月</option>
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77
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+
<option value="1">01月</option>
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78
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+
<option value="2">02月</option>
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79
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</select>
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80
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+
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81
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+
<select name="e_33[day]" id="select_day">
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82
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+
<option value="">日</option>
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83
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+
<option value="1">01日</option>
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84
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+
<option value="2">02日</option>
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85
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<option value="3">03日</option>
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86
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<option value="4">04日</option>
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87
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</select>
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88
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+
<div>
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89
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<input type="submit" name="__send" id="__send" value="確認画面へ" />
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90
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</div>
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91
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</form>
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92
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+
```
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1
調整
test
CHANGED
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@@ -1,2 +1,38 @@
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1
1
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select_[year]というidの要素はありません(month,dayも同様)
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2
2
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単純にセレクトボックスにデフォルト値を設定しておけばいいだけの話だ思いますが・・・
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3
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+
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4
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+
# sample
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5
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```javascript
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6
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<script>
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7
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window.addEventListener('DOMContentLoaded', ()=>{
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8
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document.querySelector('#__send').addEventListener('click', e=>{
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9
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e.preventDefault();
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10
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const y=select_year.value;
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11
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const m=select_month.value;
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12
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const d=select_day.value;
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13
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console.log([y,m,d]);
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14
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});
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15
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});
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16
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</script>
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17
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<form method="post">
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18
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<select name="e_33[year]" id="select_year">
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19
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<option value="2022">2022年</option>
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20
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<option value="2023">2023年</option>
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21
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</select>
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22
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+
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23
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<select name="e_33[month]" id="select_month">
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24
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<option value="1">01月</option>
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25
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<option value="2">02月</option>
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26
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</select>
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27
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+
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28
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<select name="e_33[day]" id="select_day">
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29
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<option value="1">01日</option>
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30
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<option value="2">02日</option>
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31
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<option value="3">03日</option>
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32
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+
<option value="4">04日</option>
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33
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+
</select>
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34
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+
<div>
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35
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<input type="submit" name="__send" id="__send" value="確認画面へ" />
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|
36
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+
</div>
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37
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+
</form>
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38
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+
```
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