基本上我想在满足条件的情况下运行html代码

Question

基本上我想在用户使用移动设备时运行HTML代码。当我尝试这样做时它没有用（可能是因为我在JS标签中运行html。

<!--device detection-->
    <script type="text/javascript">
    if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|OperaMini/i.test(navigator.userAgent) ) {

        document.write('line1'+
           'line2'+
           'line3'+
           'line4'+
           'line5'+
           'line6'+
           'line7'+
           'line8'+
           'line9'+
           'line10'+);
        <!-- start of nivo. slider code-->
         <!-- here i called the slider-->
        <div id="slider">
        <a href="">
            <img src="../images/banner_01.jpg" alt="" title= "" /></a>
            <img src="../images/banner_02.jpg" alt="" title="" /></a> 
            <img src="../images/banner_03.jpg" alt="" title="" /></a> 
            <img src="../images/banner_04.jpg" alt="" title="" /></a> 
        </div>
        <!-- end of nivo. slider code-->

    }
    </script