回答編集履歴
3
ちょうせい
answer
CHANGED
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@@ -39,4 +39,50 @@
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39
39
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<tbody>
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40
40
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</tbody>
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41
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</table>
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42
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+
```
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43
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# 上限あり
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44
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```javascript
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45
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<script>
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46
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window.addEventListener('DOMContentLoaded', ()=>{
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const max=3;
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48
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const sub=document.querySelector('#sub');
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49
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document.querySelector('#btn').addEventListener('click',()=>{
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50
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if(sub.value=="notselect"){
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51
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alert('not selected!');
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52
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}else if([...document.querySelectorAll('#sublist tbody td')].map(x=>x.textContent).includes(sub.value)){
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53
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alert('already exists');
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54
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}else if([...document.querySelectorAll('#sublist tbody td')].length>=max){
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55
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alert(`can't regist anymore`);
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}else{
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document.querySelector('#sublist tbody').appendChild(
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[Object.assign(document.createElement('td'),{textContent:sub.value})].reduce((x,y)=>{
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x.appendChild(y);
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60
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return x;
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61
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},document.createElement('tr'))
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);
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}
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});
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65
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});
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66
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</script>
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67
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68
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<select id="sub">
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69
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<option value="notselect"></option>
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70
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<option value="01302年現代文Ba・月3水1">0130 2年現代文Ba・月3水1</option>
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71
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<option value="01312年現代文Bb・月4水2">0131 2年現代文Bb・月4水2</option>
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72
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<option value="01322年現代文Bc・月4金1">0132 2年現代文Bc・月4金1</option>
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73
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<option value="01332年現代文Bd・火2木2">0133 2年現代文Bd・火2木2</option>
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74
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<option value="01342年現代文Be・火4木2">0134 2年現代文Be・火4木2</option>
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75
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<option value="01352年現代文Bf・水1木4">0135 2年現代文Bf・水1木4</option>
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76
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<option value="01362年現代文Bg・水2金1">0136 2年現代文Bg・水2金1</option>
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77
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</select>
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78
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<button id="btn">追加</button>
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79
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<table border="1" id="sublist">
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80
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<thead>
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81
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<tr>
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82
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<th>科目リスト</th>
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83
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</tr>
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84
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</thead>
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85
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<tbody>
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</tbody>
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87
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</table>
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42
88
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```
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2
chousei
answer
CHANGED
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@@ -39,70 +39,4 @@
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39
39
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<tbody>
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40
40
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</tbody>
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41
41
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</table>
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42
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-
```
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43
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# 調整版
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44
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```jaascript
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45
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<script>
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window.addEventListener('DOMContentLoaded', ()=>{
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-
const s1=document.querySelector('#s1');
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const s2=s1.cloneNode(true);
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const p=s1.parentNode;
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s2.setAttribute('id','s2');
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s2.querySelectorAll('.hide').forEach(x=>x.remove());
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document.querySelector('#color').addEventListener('change',()=>{
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if([...p.children].includes(s1)){
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p.insertBefore(s2,s1);
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s1.remove();
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}else{
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p.insertBefore(s1,s2);
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s2.remove();
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}
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});
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document.addEventListener('change',()=>{
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const color=document.querySelector('#s1,#s2').value;
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document.querySelectorAll('.s1_select').forEach(x=>{
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x.style.display='none';
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x.querySelector('select').disabled=true;
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});
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document.querySelector('#'+color).style.display='';
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document.querySelector('#'+color+" select").disabled=false;
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;
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});
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});
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</script>
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<label><input type="checkbox" id="color" name="color"> カラー</label>
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74
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<label>
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<select id="s1">
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<option value="white" class="hide">白</option>
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<option value="red">赤</option>
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<option value="black" class="hide">黒</option>
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</select>
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</label>
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<div class="s1_select" id="white">
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<label>
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<select>
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<option value="white1">WHITE1</option>
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<option value="white2">WHITE2</option>
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</select>
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</label>
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</div>
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<div class="s1_select" id="red" style="display:none">
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<label>
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<select disabled>
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<option value="red1">RED1</option>
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<option value="red2">RED2</option>
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</select>
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</label>
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</div>
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<div class="s1_select" id="black" style="display:none">
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<label>
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<select disabled>
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<option value="black1">BLACK1</option>
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<option value="black2">BLACK2</option>
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</select>
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106
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</label>
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107
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</div>
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108
42
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```
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1
chousei
answer
CHANGED
|
@@ -39,4 +39,70 @@
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39
39
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<tbody>
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|
40
40
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</tbody>
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41
41
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</table>
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42
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+
```
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43
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+
# 調整版
|
|
44
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+
```jaascript
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45
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+
<script>
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46
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+
window.addEventListener('DOMContentLoaded', ()=>{
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47
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+
const s1=document.querySelector('#s1');
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48
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const s2=s1.cloneNode(true);
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49
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const p=s1.parentNode;
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50
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s2.setAttribute('id','s2');
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51
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s2.querySelectorAll('.hide').forEach(x=>x.remove());
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52
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document.querySelector('#color').addEventListener('change',()=>{
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53
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if([...p.children].includes(s1)){
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54
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p.insertBefore(s2,s1);
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55
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s1.remove();
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56
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}else{
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p.insertBefore(s1,s2);
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s2.remove();
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}
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});
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61
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document.addEventListener('change',()=>{
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const color=document.querySelector('#s1,#s2').value;
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63
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document.querySelectorAll('.s1_select').forEach(x=>{
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64
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x.style.display='none';
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65
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x.querySelector('select').disabled=true;
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66
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});
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67
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document.querySelector('#'+color).style.display='';
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68
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document.querySelector('#'+color+" select").disabled=false;
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69
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;
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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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+
</script>
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73
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+
<label><input type="checkbox" id="color" name="color"> カラー</label>
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74
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+
<label>
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75
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+
<select id="s1">
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76
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+
<option value="white" class="hide">白</option>
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77
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+
<option value="red">赤</option>
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78
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+
<option value="black" class="hide">黒</option>
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79
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+
</select>
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80
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+
</label>
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81
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+
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82
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+
<div class="s1_select" id="white">
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83
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+
<label>
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84
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+
<select>
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85
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+
<option value="white1">WHITE1</option>
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86
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+
<option value="white2">WHITE2</option>
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87
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+
</select>
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88
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</label>
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89
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+
</div>
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90
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+
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91
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+
<div class="s1_select" id="red" style="display:none">
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92
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+
<label>
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93
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+
<select disabled>
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94
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<option value="red1">RED1</option>
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95
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+
<option value="red2">RED2</option>
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96
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+
</select>
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97
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</label>
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98
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+
</div>
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99
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+
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100
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<div class="s1_select" id="black" style="display:none">
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101
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<label>
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102
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+
<select disabled>
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103
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+
<option value="black1">BLACK1</option>
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104
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+
<option value="black2">BLACK2</option>
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105
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</select>
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106
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+
</label>
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107
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+
</div>
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42
108
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```
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