控制標籤上移、下移、置頂、置底
阿新 • • 發佈：2019-01-23
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>Examples</title> <meta name="description" content=""> <meta name="keywords" content=""> <link href="" rel="stylesheet"> <script src="http://libs.baidu.com/jquery/1.8.2/jquery.min.js"></script> <style> .demo li{line-height: 30px;border-bottom: 1px solid #000;} .demo li a{padding: 0 20px;} </style> </head> <body> <ul class="demo"> <li>001 <a href="#" class="up">上移</a><a href="#" class="down">下移</a><a href="#" class="top">置頂</a><a href="#" class="bottom">置底</a></li> <li>002 <a href="#" class="up">上移</a><a href="#" class="down">下移</a><a href="#" class="top">置頂</a><a href="#" class="bottom">置底</a></li> <li>003 <a href="#" class="up">上移</a><a href="#" class="down">下移</a><a href="#" class="top">置頂</a><a href="#" class="bottom">置底</a></li> <li>004 <a href="#" class="up">上移</a><a href="#" class="down">下移</a><a href="#" class="top">置頂</a><a href="#" class="bottom">置底</a></li> </ul> <script> $(".demo").on('click', 'a', function(event) { event.preventDefault; var parent=$(this).parent(); var parents=$(this).parents(".demo");console.log(parent);return false; var len=parents.children().length; if(($(this).is(".up") || $(this).is(".top")) && parent.index()==0){ alert("已經置頂！"); return false; }else if(($(this).is(".down") || $(this).is(".bottom")) && parent.index()==len-1){ alert("已經置底！"); return false; } switch (true) { case $(this).is(".up"): var prev = parent.prev(); parent.insertBefore(prev); break; case $(this).is(".down"): var next = parent.next(); parent.insertAfter(next); break; case $(this).is(".top"): parents.prepend(parent); break; case $(this).is(".bottom"): parents.append(parent); break; } alert("操作完成！！"); }); </script> </body> </html>