代码如下：
1 1 2 2 3 3 4 4 5 5div模拟textarea自适应高度le> 6 6 <style type="text/css"> 7 7 .test_box{ 8 8 width:500px; 9 9 min-height:200px;10 10 max-height:600px;11 11 _height:200px;/*兼容IE6浏览器*/12 12 margin:0 auto;13 13 padding:3px;14 14 outline:0;15 15 border:1px solid #e4e4e4;16 16 font-size:12px;17 17 word-wrap:break-word;/*用于英文文本自动换行，所有主流浏览器支持*/18 18 overflow-x:hidden;19 19 overflow-y:auto;20 20 -webkit-user-modify: read-write-plaintext-only;21 21 }22 22 </style>23 23 </head>24 24 <body>25 25 我是模拟textarea的div26 26 </pre></div> </p> <p>其中有一两个从没见过的属性：</p> <li>-webkit-user-modify: read-only | read-write | read-write-plaintext-only<br /> <table> <tr> read-only <td>内容只读。</td> </tr> <tr> read-write <td>内容可读写。</td> </tr> <tr> read-write-plaintext-only <td>内容可读写，但粘贴内容中的富文本格式（如文本的颜色、大小，图片等）会丢失。内容类似于以纯文本显示。</td> </tr> </table></li> <li> contenteditable 属性规定是否可编辑元素的内容。<br /> <table> <tr> true <td>规定可以编辑元素内容。</td> </tr> <tr> false <td>规定无法编辑元素内容。</td> </tr> </table></li> <p> </p> <p> 再次感谢鑫大神（http://www.zhangxinxu.com/），分享了好多非常实用的经验，等将来能达到他那种高度，我也想写出好博客分享出来造福人类，哈哈，虽然还很遥远，继续fighting~ </p><p><script type="text/javascript" src="https://jss.51dongshi.net/pcwz/dysph.js"></script></div> <div class="downbox clearfix"> <div class="ico"><img src="https://js.51dongshi.net/tpl/pc2/images/document.png" alt="文档"></div> <div class="txt"> <h4>div模拟textarea自适应高度_html/css</h4> <div class="co">div模拟textarea自适应高度_html/css_WEB-ITnose:之前在公司做项目的时候，有这么一个需求，要我写一个评论框，可以随着评论的行数增加而自动扩大，最开始我想用textarea实现，但是后来尝试后发现textarea并不适合，textarea的高度不会随着输入行数的增多而增大，于是我上网寻求了下帮助，发现大神张鑫旭的这</div> <div class="tj"><b>推荐度：</b><div class="tj_stars_list"><i class="tj_stars tj_05"></i></div></div> </div> <div class="btn"> <a href="javascript:;" class="html2word" data-model="article" data-id="arcccc" title="文档下载"> <b>点击下载本文</b> <span>文档为doc格式</span> </a> </div> </div> <script>keji_detail_ga('article_content_bottom');</script> <div class="tvideo_tag"> 标签： <a href="/tlist-246007/">html</a> <a href="/tlist-269755/">高度</a> <a href="/tlist-567364/">css</a> </div> <div class="tvideo_box tvideo_box_tab"> <div class="hd"> <ul><li class="on">热门焦点</li><script>keji_detail_ga('hot_jiaodian_tab_title');</script></ul> </div> <div class="bd"> <ul class="ult_jpic clearfix"> <script>get_hot_jiaodian_content('wz_hot_jiaodian',33,'hot',1);</script> </ul> </div> </div> </div> <!--中间文章 end--> <!--右侧专题 star--> <div class="ult_zt"> <script>keji_detail_ga('article_right_top');</script> <div class="ult_ztbox"> <h4>最新推荐</h4> <ul class="tvideo_r_a clearfix"> <script>get_detail_right('wz_right_new',33,'')</script> </ul> </div> <script>keji_detail_ga('article_right_middle');</script> <div class="ult_ztbox"> <h4>猜你喜欢</h4> <ul class="telist_rb clearfix"> <script>get_detail_right('wz_right_love',33,'')</script> </ul> </div> <script>keji_detail_ga('article_right_new_bottom');</script> <div class="ult_ztbox"> <h4>热门推荐</h4> <ul class="tvideo_r_b clearfix"> <script>get_detail_right('wz_right_hot',33,'')</script> </ul> </div> <script>keji_detail_ga('article_right_bottom');</script> </div> <!--右侧专题 end--> <div style="display:none"><a href="https://www.51dongshi.net/wzztf/ar/arcccc/">专题</a> </div> </div> </div> <script src="https://js.51dongshi.net/plug/qrcode/qrcode.min.js"></script> <script src="https://js.51dongshi.net/js/share.js" charset="UTF-8"></script> <script type="text/javascript" src="https://js.51dongshi.net/tpl/pc2/js/waypoints.min.js"></script> <script type="text/javascript" src="https://js.51dongshi.net/tpl/pc2/js/icon_step.js"></script> <style> #qrcode{padding: 15px;background: #fff;} </style> <div id="qrcode" style="display: none"></div> <script>new QRCode(document.getElementById("qrcode"), "https://m.51dongshi.net/eedfarcccc.html");</script> <iframe src="https://hits.51dongshi.net/?biao=ho_article&id=918888" border="0" frameborder="0" style="width: 0px; 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