回答編集履歴
1
tuiki
test
CHANGED
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@@ -32,3 +32,39 @@
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32
32
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<label><input type="checkbox" value="3">3</label>
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33
33
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</fieldset>
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34
34
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```
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35
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+
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36
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+
# カスタムデータとクラスをつかって処理
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37
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```javascript
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38
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<script>
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39
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document.addEventListener('click',e=>{
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40
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const t=e.target;
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41
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document.querySelectorAll(t.dataset["check"]).forEach(x=>{
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42
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x.checked=true;
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43
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});
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44
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document.querySelectorAll(t.dataset["uncheck"]).forEach(x=>{
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45
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x.checked=false;
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46
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});
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47
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});
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48
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</script>
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49
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<fieldset>
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50
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<input type="button" value="全て選択" data-check=".c1">
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51
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<input type="button" value="全て解除" data-uncheck=".c1">
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52
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<label><input type="checkbox" value="1" class="c1">1</label>
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53
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<label><input type="checkbox" value="2" class="c1">2</label>
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54
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<label><input type="checkbox" value="3" class="c1">3</label>
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55
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</fieldset>
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56
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<fieldset>
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57
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<input type="button" value="全て選択" data-check=".c2">
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58
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<input type="button" value="全て解除" data-uncheck=".c2">
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59
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<label><input type="checkbox" value="1" class="c2">1</label>
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60
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<label><input type="checkbox" value="2" class="c2">2</label>
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61
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<label><input type="checkbox" value="3" class="c2">3</label>
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62
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</fieldset>
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63
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<fieldset>
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64
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<input type="button" value="全て選択" data-check=".c3">
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65
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<input type="button" value="全て解除" data-uncheck=".c3">
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66
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<label><input type="checkbox" value="1" class="c3">1</label>
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67
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<label><input type="checkbox" value="2" class="c3">2</label>
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68
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<label><input type="checkbox" value="3" class="c3">3</label>
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69
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</fieldset>
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70
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```
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