jQuery获取后台动态添加上去的选择器

从1.7版本开始 添加了一个 on()方法

<table>    
　　<tbody></tbody>
</table>

<script>
$(function(){
    $("tbody").on("click", ".UserDel", function () {
                alert('1');
            });
});

 <!--后台传进来的参数e-->

function show(e) {
            html = "";

            for (var i = 0; i < e.length; i++) {
                html += "<tr>";
                html += "<td class='UserID'>" + e[i].ID + "</td>";
                html += "<td>" + e[i].A1 + "</td>";
                html += "<td>" + e[i].A2 + "</td>";
                html += "<td>" + e[i].A3 + "</td>";
                html += "<td>" + e[i].A4 + "</td>";
                html += "<td>" + e[i].stateMsg + "</td>";
                html += "<td><a class='UserDel' >删除</a></td>";
                html += "</tr>";
            }
            $("tbody").html(html);
        } 
</script>