我一直在寻找并使用Jsfiddle进行测试，但我无法弄清楚如何选择我需要的东西。
以下是我的HTML代码的一部分：
<div id="maincontent">
<div class="section group">
<div class="col span_1_of_7">
<ul class='kwicks kwicks-vertical'>
<li id='panel-1'><a id="keyIssues" href="#">Key Issues</a></li>
<li id='panel-2'><a id="pollData" href="#">Poll Data</a></li>
<li id='panel-3'><a id="bubbles" href="#">Bubbles</a></li>
<li id='panel-4'><a id="dataFrom" href="#">Data Collected From</a></li>
<li id='panel-5'><a id="group11" href="#">Group 11</a></li>
</ul>
</div>
<div class="col span_6_of_7">
<section id="infographic">
<div id ="infographicContent">
<img id="banner" src="images/banner.jpg" alt="Federal Election 2013 Logo" >
<div id="chart" style="min-width: 310px; height: 700px; margin: 0 auto"></div>
<div id="poll" style="min-width: 310px; height: 700px; margin: 0 auto"></div>
</div>
</section>
</div>
</div>
</div>
我想删除<div class="col span_6_of_7">，然后从文件中追加以下内容：
<div class="col span_5_of_7">
<section id="infographic">
<div id ="infographicContent">
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="js/bubbles.js" ></script>
<button>Play</button>
<input style="position:inherit;top:4px;" type="range" min="0" max="62" value="0">
</div>
</section>
</div>
<div class="col span_1_of_7">
<section id="feed">
<div id ="infoFeed">
<ul>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
</ul>
</div>
</section>
</div>
请有人开导我，因为我真的很感激吗？提前谢谢。
bubble.html文件的内容：
<div class="col span_5_of_7">
<section id="infographic">
<div id ="infographicContent">
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="js/bubbles.js" ></script>
<button>Play</button>
<input style="position:inherit;top:4px;" type="range" min="0" max="62" value="0">
</div>
</section>
</div>
<div class="col span_1_of_7">
<section id="feed">
<div id ="infoFeed">
<ul>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
<li><p><h6>Two-Year-Old Twins Found Locked in Room Alone</h6>Child Services have taken the girls into protective custody after discovering them naked in an empty room with only one blanket</p></li>
<li><p><h6>SNLs 5 Best Skits: NASA Shuts Down, and Bruce Willis Dances</h6>In this week’s episode of Saturday Night Live, hosted by Bruce Willis: plenty of jokes at Congress’s expense, and just a touch of twerking</p></li>
<li><p><h6>Man Nearly Killed by Train When Car Got Stuck on Tracks</h6>Blames his GPS device for leading him down the wrong road</p></li>
</ul>
</div>
</section>
</div>
此致 内特
答案 0 :(得分：3)
您可以加载文件内容，然后删除容器
（通过使用选择器.col.span_6_of_7中的两个类）
并将加载的代码附加到回调中：
$.get('file.html', function(html){
$('.col.span_6_of_7').remove();
$('#maincontent').append($(html));
});
答案 1 :(得分：1)
试试这个：
$(".col.span_6_of_7").replaceWith("<div>New Div</div>");
该选择器选择具有两个类的元素，replaceWith方法完全相同，替换为新元素。
答案 2 :(得分：-1)
试试这个
$('.col span_6_of_7').replaceWith('.col span_5_of_7')