<!DOCTYPE html> <html dir="ltr" lang="zh-CN"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width" /> <title>jQuery 表格自动增加</title> <meta name="keywords" content="jQuery, 表格, table, 自动增加" /> <meta name="description" content="jQuery表格自动增加" /> <meta name="viewport" content="width=device-width" /> <meta name="copyright" content="imsole.net" /> <meta name="designer" content="sole" /> <meta name="publisher" content="imsole.net" /> <meta name="author" content="sole" /> <meta name="robots" content="all" /> <meta name="distribution" content="global" /> <style type="text/css"> table { 900px; margin:50px auto; border-collapse:collapse; border-spacing:0; } table tr, table th, table td { border:1px solid #ddd; font-size:12px; } table tr td:first-child { 30px; text-align:center; } table td input { 100%; height:100%; padding:5px 0; border:0 none; } table td input:focus { box-shadow:1px 1px 3px #ddd inset; outline:none; } table td a { display: block; 30px; } </style> <body> <table id="count"> <tr><th>序号</th><th>姓名</th><th>金额[USD]</th><th>时间</th><th>项目</th><th>单位</th><th>备注</th><th>操作</th></tr> <tr> <td>1</td> <td><input type="text" /></td> <td><input type="text" /></td> <td><input type="text" /></td> <td><input type="text" /></td> <td><input type="text" /></td> <td><input type="text" /></td> <td><a href="javascript:;" class="del">删除</a></td> </tr> </table> <script src="http://apps.bdimg.com/libs/jquery/1.8.1/jquery.min.js"></script> <script type="text/javascript"> $(function(){ /* 这是一种方法，但是不精简，不过很好理解，就像面向过程编写代码一样。 var oTable = $("#count"), oTr = '', oInput = '', eEle = ''; oTable.on('mouseover', function(){ oTr = oTable.find('tr').last(); oInput = oTr.find('input'); eEle = oTr.clone(); oInput.on('click', function(){ var parent = $(this).parents('tr'); if(oTr.index() == parent.index()){ oTable.append(eEle); } }); }); */ //这是第二种方法，比较精简，要看对jQ的理解了。 var oTable = $("#count"), iNum = 1, eEle = ''; oTable.on('click', function(e){ var target = e.target, oTr = $(target).closest('tr'); if ($(target).hasClass('del') && oTr.index()>1) { iNum--; var nextID = oTr.nextAll('tr').find('td:eq(0)'); nextID.each(function(i, ele){ $(ele).text( $(ele).text()-1 ); }); oTr.remove(); return; }; if(oTr.index() == oTable.find('tr').last().index()){ iNum++; eEle = oTr.clone(); eEle.find('td').eq(0).text(iNum); } oTable.append(eEle); }); }); </script> </body> </html>