jquery slidedown 和 slideup 摆动 div

Question

http://eusville.com/eusVote/1/baltimore-sushi

点击“添加评论/评分”按钮。当评论框向下滑动时，页面会摆动。我很困惑。谷歌搜索但找不到解决方案。

奇怪的是问题出在 Chrome 和 Firefox 中。 IE 运行流畅...

HTML div 是:...抱歉，那里有很多 Razor 的东西。忽略@s ...

jQuery 上下滑动此 Div。

感谢提示! TIA。

$(".buttonAddCommentRate").click(function () {    
    var crBox = $(this).closest('.answer-container').find('.answer-commentRateBox');    
    var buttonText = $(this).text();

    if (buttonText == 'Add comment/rate') {
        crBox.slideDown(300);
        $(this).text('Cancel comment/rate');
    }
    else {
        crBox.slideUp(300);
        $(this).text('Add comment/rate');
    }
});

.answer-comment{
    width:600px;
         float: left;
}
.answer-textArea{
    width: 500px;
    height: 180px;     
}

.answer-commentRateBox{
   display:none;
   overflow: hidden;   
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="answer-container">
            <div class="answer-main">
                <h4>@Model.ElementAt(i).Title</h4>

                @Model.ElementAt(i).Detail<br /><br />

                <button class="buttonAddCommentRate" data-id="@Model.ElementAt(i).AnswerID">Add comment/rate</button>&nbsp;&nbsp;&nbsp;&nbsp;
                <span class="span-buttonAddCommentRate">Log in to comment and/or rate</span>
            </div>

            <div class="answer-eusScore">
                eusScore (<span class="answer-count">@Model.ElementAt(i).Count</span>)<br /><br />
                <span class="span-answer-eusScore">@(Math.Round((decimal)(Model.ElementAt(i).RatingScore)))%</span>
            </div>
            <div class="answer-thankYou">
                Rating/comment posted
            </div>

            <br style="clear:both" />

            <div class="answer-commentRateBox">
                <br />
                <div class="answer-comment">
                    <textarea class="answer-textArea" placeholder="Comment must be more than 5 words ..."></textarea>
                </div>

                <div class="answer-rateIt">
                    <input data-id="@Model.ElementAt(i).AnswerID" type="number" class="rating" min=0 max=5 step=0.5 data-size="sm"><br />
                    <br /><br />
                    <button class="buttonSubmit" disabled data-id="@Model.ElementAt(i).AnswerID">Submit</button>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<button class="buttonCancel">Cancel</button><br />
                    <span id="span-enable-message" style="font-size:smaller">(rate to enable)</span>
                </div>
                <br style="clear:both" />
            </div>

            <div>
                @*displays the comments using a partial view*@
                @{Html.RenderAction("Comments", "Topic", new { answerID = @Model.ElementAt(i).AnswerID });}
            </div>

        </div>

        <hr />

Answer 1

您遇到的问题的发生是因为页面的高度大于视口(viewport)的高度。这意味着将出现一个滚动条。

将此添加到您的 css，它可能会解决您的问题

 html {
     overflow-y: scroll;
 }