如果我要append的代码很长很长，append括号就会被拉得很长很长，能否在append里面设定换行，怎样换？，<body>
<script>
$("div").append("<div><ul><li>11</li><li>22</li><li>33</li> </ul></div>")
</script>
<div>
<ul>
<li>11</li>
<li>22</li>
<li>33</li>
</ul>
</div>
</body>
<script>
$("div").append("<div><ul><li>11</li><li>22</li><li>33</li> </ul></div>")
</script>
<div>
<ul>
<li>11</li>
<li>22</li>
<li>33</li>
</ul>
</div>
</body>
"<ul>"+
"<li>11</li>"+
"<li>22</li>"+
"<li>33</li>"+
" </ul>"+
"</div>")