回答編集履歴
1
sample
test
CHANGED
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@@ -1 +1,99 @@
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cloneしてお互いのいらない行を削除すればよいでしょう
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# sample
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```javascript
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<script>
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window.addEventListener('DOMContentLoaded', function(e){
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var t1=document.querySelector('table');
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var t2=t1.cloneNode(true);
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var idx=2;
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[].forEach.call(t1.querySelectorAll('tbody tr'),function(x,y){
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if(y>=idx) x.parentNode.removeChild(x);
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});
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[].forEach.call(t2.querySelectorAll('tbody tr'),function(x,y){
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if(y<idx) x.parentNode.removeChild(x);
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});
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t1.parentNode.appendChild(t2);
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});
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</script>
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<table style="table-layout: fixed" border>
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<thead>
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<tr>
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<th>見出し-1</th>
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<th>見出し-2</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>行1-1</td>
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<td>行1-2</td>
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</tr>
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<tr>
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<td>行2-1</td>
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<td>行2-2</td>
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</tr>
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<tr>
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<td>行3-1</td>
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<td>行3-2</td>
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</tr>
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<tr>
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<td>行4-1</td>
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<td>行4-2</td>
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</tr>
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<tr>
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<td>行5-1</td>
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<td>行5-2</td>
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</tr>
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</tbody>
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</table>
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```
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