回答編集履歴
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追記
answer
CHANGED
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@@ -7,4 +7,73 @@
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> value string: Returns / Sets the current value of the control.
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[HTMLInputElement - Web APIs | MDN](https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement)
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10
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[HTMLInputElement - Web APIs | MDN](https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement)
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##### コメントを受けて追記
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```HTML
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<table id="tbl">
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<tr>
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<td>
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<select id="number1">
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<option>001</option>
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<option>002</option>
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</select>
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</td>
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<td>
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<input type="text" id="txt1">
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</td>
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</tr>
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<tr>
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<td>
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<select id="number2">
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<option>001</option>
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<option>002</option>
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</select>
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</td>
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<td>
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<input type="text" id="txt2">
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</td>
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</tr>
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</table>
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<button>
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test
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</button>
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```
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```javascript
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var tblData = document.getElementById("tbl");
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document.querySelector('button').addEventListener('click', e => {
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let txtTbldata = '';
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for (var i = 0, rowlen = tblData.rows.length; i < rowlen; i++) {
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for (var j = 0, collen = tblData.rows[i].cells.length; j < collen; j++) {
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txtTbldata += tblData.rows[i].cells[j].children[0].value;
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}
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}
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alert(txtTbldata);
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})
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```
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[https://jsfiddle.net/pg14qncq/](https://jsfiddle.net/pg14qncq/)
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こんな感じでいかが。
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さらに行を少なくするなら、ワンライナーで書けますよ。
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```javascript
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document.querySelector('button').addEventListener(
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'click',
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e => alert(
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Array.prototype.reduce.call(
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document.getElementById("tbl").rows,
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( pv, cv ) => pv + Array.prototype.reduce.call(
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cv.cells,
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( pv, cv ) => pv + cv.children[0].value,
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''
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),
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''
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)
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)
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);
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```
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