JS实现选定指定HTML元素对象中指定文本内容功能示例

中文本中指定部分 function selectSomeText(obj,start,end){ if(document.selection){ if(obj.tagName=='TEXTAREA'){ var i=obj.value.indexOf("\r",0); while(i!=-1&&i

<script type="text/javascript" language="javascript" > selectSomeText(document.getElementById('jiu_textarea'),8)//选中ID为jiu_textarea内的第2至8个字！ </script> </body> </html> </pre> </div> <p>运行<a href="https://www.jb51.cc/tag/xiaoguo/" target="_blank" class="keywords">效果</a>图如下：</p> <p><p class="pic_center"><img src="https://files.jb51.cc/file_images/article/201702/2017213101525280.jpg?2017113101542" alt="" /></p></p> <p>更多关于JavaScript相关<a href="https://www.jb51.cc/tag/neirong/" target="_blank" class="keywords">内容</a>感兴趣的读者可查看本站专题：《<a target="_blank" href="//www.jb51.cc/Special/892.htm">JavaScript事件相关操作与技巧大全</a>》、《<a target="_blank" href="//www.jb51.cc/Special/332.htm">JavaScript操作DOM技巧总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/439.htm">JavaScript错误与调试技巧总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/297.htm">JavaScript数据结构与算法技巧总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/281.htm">JavaScript遍历算法与技巧总结</a>》及《<a target="_blank" href="//www.jb51.cc/Special/119.htm">JavaScript数学运算用法总结</a>》</p> <p>希望本文所述对大家JavaScript程序设计有所帮助。</p><i class="glyphicon glyphicon-link"></i> 原文链接：https://www.f2er.com/js/41764.html</div> <div class="topcard-tags"><a href="https://www.f2er.com/tag/HTML/" class="tag_link" target="_blank">HTML</a><a href="https://www.f2er.com/tag/yuansu/" class="tag_link" target="_blank">元素</a><a href="https://www.f2er.com/tag/yuansup/" class="tag_link" target="_blank">元素</a><a href="https://www.f2er.com/tag/pyuansu/" class="tag_link" target="_blank">元素</a><a href="https://www.f2er.com/tag/duixiang/" class="tag_link" target="_blank">对象</a><a href="https://www.f2er.com/tag/duixiangp/" class="tag_link" target="_blank">对象</a><a href="https://www.f2er.com/tag/pduixiang/" class="tag_link" target="_blank">对象</a><a href="https://www.f2er.com/tag/zhiding/" class="tag_link" target="_blank">指定</a><a href="https://www.f2er.com/tag/zhidingp/" class="tag_link" target="_blank">指定</a><a href="https://www.f2er.com/tag/pzhiding/" class="tag_link" target="_blank">指定</a><a href="https://www.f2er.com/tag/zhidingwenbenneirong/" class="tag_link" target="_blank">指定文本内容</a><a href="https://www.f2er.com/tag/xuanding/" class="tag_link" target="_blank">选定</a><a href="https://www.f2er.com/tag/pxuanding/" class="tag_link" target="_blank">选定</a></div> <ul class="list-group"> <li class="list-group-item"><a href="https://www.f2er.com/js/41765.html" title="利用js判断手机是否安装某个app的多种方案">上一篇：利用js判断手机是否安装某个app的多</a><a href="https://www.f2er.com/js/41763.html" title="JavaScript中数组的各种操作的总结(必看篇)" class="text-muted pull-right">下一篇：JavaScript中数组的各种操作的总结</a> </li> </ul> </div> </div> </div> <!-- row end --> <div class="row row-sm"> <div class="col-sm-12 col-md-12 col-lg-12"> <div class="card"> <ins class="adsbygoogle" style="display:block" data-ad-format="autorelaxed" data-ad-client="ca-pub-4605373693034661" data-ad-slot="9144498553"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); 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