textareahistory

    <textarea id="textareahistory"></textarea>
    <div class="diary" id="historycontroller"></div>
    <script>
        var textareaHistory = new TextareaHistory((document.querySelector('#historycontroller'),{
            textareaRef: '#textareahistory',
            delay: 1000,
            max: 3
            loadButtonText: "読み込む"
        });
    </script>