質問編集履歴
1
情報の変更させて頂きました！説明して頂きありがとう御座いました！
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```javascript
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ソースコード
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```<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
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<title>Individuell uppgift 2 - Tabellhantering och beräkning</title>
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<link rel="stylesheet" type="text/css" href="style/bootstrap.min.css"/>
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<link rel="stylesheet" type="text/css" href="style/style.css"/>
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</head>
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<body>
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<div class="container">
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<div id="header" class="text-center px-3 py-3 pt-md-5 pb-md-4 mx-auto">
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<h1 class="display-4">Hemelektronik</h1>
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<p class="lead">Se våra utmärkta priser på hemelektronik i tabellen nedan</p>
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</div>
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<div id ="content">
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<table id="pricetable" class="table table-hover">
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<thead class="thead-dark">
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<tr>
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<th>Artikelnr</th>
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<th>Produkttyp</th>
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<th>Varumärke</th>
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<th>Pris</th>
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<th>Antal</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>23456789</td>
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<td>Telefon</td>
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<td>Apple</td>
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<td>6500</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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<tr>
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<td>22256289</td>
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<td>Telefon</td>
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<td>Samsung</td>
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<td>6200</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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<tr>
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<td>24444343</td>
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<td>Telefon</td>
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<td>Huawei</td>
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<td>4200</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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<tr>
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<td>19856639</td>
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<td>Surfplatta</td>
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<td>Apple</td>
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<td>4000</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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<tr>
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<td>39856639</td>
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<td>Surfplatta</td>
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<td>Samsung</td>
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<td>2800</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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<tr>
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<td>12349862</td>
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<td>Surfplatta</td>
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<td>Huawei</td>
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<td>3500</td>
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<td><input type="text" size ="3" value ="1"/></td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<script type="text/javascript" charset="utf-8" src="scripts/calculate.js"></script>
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</body>
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</html>
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```
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ソースコード
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```function add() {
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/*テーブルヘッダー*/
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/*行の追加*/
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var tableBody = document.querySelector("#pricetable tbody");
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var tablerader = tableBody.querySelectorAll("tr");
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for (var i = 0; i < tablerader.length; i++) {
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var nyCell = document.createElement("td");
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var node = document.createTextNode("hej");
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tablerader[i].appendChild(nyCell);
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}
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```
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### 試したこと
|
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60
240
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61
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