通过单击删除按钮获取参数，求大神帮忙

Question

我想通过单击删除按钮获取 userid 的值

         var user="<tr class='onck'>"
                                             + "<td>"+value.userName+"</td>"
                                            +"<td class='userId'>"+value.userId+"</td>"
                                            +"<td>"+value.password+"</td>"
                                            + " <td>"+value.sex+"</td>"
                                            + "<td>"+value.email+"</td>"
                                            +" <td >"
                                                                            +'<input type="button" calss="tz"  onclick="ondelete()"value="&nbsp删&nbsp除&nbsp" >'

                                            + "</td>"
                                            +'<td>'
                                            +'<a href="http://localhost:8081/user/update.htm">'
                                            +'<input type="button" calss="tz" value="&nbsp修改&nbsp密码&nbsp" >'
                                            +   "</a>"
                                            + "</td>"
                                            +"</tr>";

我是这样写的

function ondelete(){

var userId= $(this).parent().parent("tr").find("td").eq(2).text()

 alert(userId);

}
没有找到，求帮助

Answer 1

 +'<input type="button" calss="tz"  onclick="ondelete(this)"value="&nbsp删&nbsp除&nbsp" >'

 function ondelete(btn){

var userId= $(btn).parent().parent("tr").find("td").eq(2).text()

 alert(userId);

}