如果輪播圖的元件已經寫出來了

那麼可以在bootstrap.js檔案中修改輪播圖時間

順便在貼一套bootstrap輪播圖的程式碼：

<div align="center" id="myCarousel" class="carousel slide">
    <!-- 輪播（Carousel）指標 -->
    <ol class="carousel-indicators">
        <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
        <li data-target="#myCarousel" data-slide-to="1"></li>
        <li data-target="#myCarousel" data-slide-to="2"></li>
        <li data-target="#myCarousel" data-slide-to="3"></li>
    </ol>   
    <!-- 輪播（Carousel）專案 -->
    <div class="carousel-inner">
        <div class="item active">
            <img src="images/11111.jpg" alt="">
        </div>
        <div class="item">
            <img src="images/22222.jpg" alt="">
        </div>
        <div class="item">
            <img src="images/33333.jpg" alt="">
        </div>
        <div class="item">
            <img src="images/44444.jpg" alt="">
        </div>
    </div>
    <!-- 輪播（Carousel）導航 -->
    <a class="carousel-control left" href="#myCarousel" 
        data-slide="prev">‹
    </a>
    <a class="carousel-control right" href="#myCarousel" 
        data-slide="next">›
    </a>
</div>