回答編集履歴
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@@ -29,7 +29,7 @@
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```HTML
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<form>
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<input type="text" data-type="number" name="id" class="form-control" required="required" pattern="^[0-9]+$">
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<input type="text" data-type="number" name="id" class="form-control" required="required" pattern="^[0-9]+$" placeholder="数値を入力">
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<input type="reset" class="button" value="リセット">
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<input type="submit" class="button" value="送信">
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</form>
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