点击运行
<!DOCTYPE html> <html> <head> <script type="text/javascript" src="/static/jquery/jquery.min.js"></script> </head> <body> <ul id="one" class="level-1"> <li class="item-i">I</li> <li id="ii" class="item-ii">II <ul class="level-2"> <li class="item-a">A</li> <li class="item-b">B <ul class="level-3"> <li class="item-1">1</li> <li class="item-2">2</li> <li class="item-3">3</li> </ul> </li> <li class="item-c">C</li> </ul> </li> <li class="item-iii">III</li> </ul> <script> var listItemII = document.getElementById('ii'); $('li.item-a').closest('ul', listItemII).css('background-color', 'red'); $('li.item-a').closest('#one', listItemII).css('background-color', 'green'); </script> </body> </html>
运行结果
