回答編集履歴
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JavaScriptコードの追記
test
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### 多次元配列
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> これが非常に厄介で例えばname="hoge[0][huga][1][]のようなフォームが沢山あります。
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@@ -76,4 +80,194 @@
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### JavaScriptコード
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> javascript側でのフォーム追加処理はこんな感じです。※jquery使ってます
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HTMLが見えないのでどういう理屈でそのコードに至ったのかまで読み取れませんでしたが、私なら次のように書きます。
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- [入力項目の多い画面の設計 - JSFiddle](https://jsfiddle.net/3u96y28n/)
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```HTML
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<form>
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<input class="insert-fieldset" type="button" value="追加">
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<fieldset>
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<legend>フォーム群1</legend>
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<p><input type="text" name="table[0][text][0]"></p>
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<p><input type="text" name="table[0][text][1]"></p>
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<input class="insert-fieldset" type="button" value="追加">
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<fieldset>
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<legend>フォーム群1-1</legend>
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<p><input type="text" name="table[0][group][0][0]"></p>
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<p><input type="text" name="table[0][group][0][1]"></p>
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</fieldset>
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<fieldset>
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<legend>フォーム群1-2</legend>
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<p><input type="text" name="table[0][group][1][0]"></p>
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<p><input type="text" name="table[0][group][1][1]"></p>
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</fieldset>
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</fieldset>
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<fieldset>
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<legend>フォーム群2</legend>
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<p><input type="text" name="table[1][text][0]"></p>
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<p><input type="text" name="table[1][text][1]"></p>
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<input class="insert-fieldset" type="button" value="追加">
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<fieldset>
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<legend>フォーム群2-1</legend>
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<p><input type="text" name="table[1][group][0][0]"></p>
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<p><input type="text" name="table[1][group][0][1]"></p>
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</fieldset>
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<fieldset>
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<legend>フォーム群2-2</legend>
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<p><input type="text" name="table[1][group][1][0]"></p>
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<p><input type="text" name="table[1][group][1][1]"></p>
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</fieldset>
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</fieldset>
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</form>
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<script>
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'use strict';
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jQuery('form').on('click', '.insert-fieldset', function handleClick (event) {
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var input = jQuery(event.target),
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nestLevel = input.parents('fieldset').length + 1,
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lastFieldset = input.nextAll('fieldset:last()'),
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fieldset = lastFieldset.clone(true),
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legend = fieldset.find('legend'),
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textNode = legend[0].firstChild,
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beforeTopLevelCaption = textNode.data,
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match = /^(\D*(?:\d+\D*)*)(\d+)$/.exec(beforeTopLevelCaption),
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afterTopLevelCaption = match[1] + ++match[2];
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textNode.data = afterTopLevelCaption;
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for (var i = 1, len = legend.length, text, index; i < len; ++i) {
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textNode = legend[i].firstChild;
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text = textNode.data;
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index = text.indexOf(beforeTopLevelCaption);
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if (index !== -1) {
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textNode.data = text.slice(0, index) + afterTopLevelCaption + text.slice(index + afterTopLevelCaption.length);
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}
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}
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for (var i = 0, inputList = fieldset.find('input[type="text"]'), len = inputList.length, input, name, reg = /[\d+(?=])/g, result, j, index, bracket; i < len; ++i) {
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input = inputList[i];
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name = input.name;
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j = 0;
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reg.lastIndex = 0;
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while (result = reg.exec(name), ++j < nestLevel);
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index = result.index;
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bracket = result[0];
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input.name = name.slice(0, index) + '[' + (+bracket.slice(1) + 1) + ']' + name.slice(index + bracket.length + 1);
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}
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lastFieldset.after(fieldset);
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});
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</script>
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```
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Re: annderberさん
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