jq 删除表格事件

<style>
        * {
            padding: 0;
            margin: 0;
        }

        .wrap {
             410px;
            margin: 100px auto 0;
        }

        table {
            border-collapse: collapse;
            border-spacing: 0;
            border: 1px solid #c0c0c0;
        }

        th,
        td {
            border: 1px solid #d0d0d0;
            color: #404060;
            padding: 10px;
        }

        th {
            background-color: #09c;
            font: bold 16px "Î¢ÈíÑÅºÚ";
            color: #fff;
        }

        td {
            font: 14px "Î¢ÈíÑÅºÚ";
        }

        td a.get {
            text-decoration: none;
        }

        a.del:hover {
            text-decoration: underline;
        }

        tbody tr {
            background-color: #f0f0f0;
        }

        tbody tr:hover {
            cursor: pointer;
            background-color: #fafafa;
        }

        .btnAdd {
             110px;
            height: 30px;
            font-size: 20px;
            font-weight: bold;
        }

        .form-item {
            height: 100%;
            position: relative;
            padding-left: 100px;
            padding-right: 20px;
            margin-bottom: 34px;
            line-height: 36px;
        }

        .form-item > .lb {
            position: absolute;
            left: 0;
            top: 0;
            display: block;
             100px;
            text-align: right;
        }

        .form-item > .txt {
             300px;
            height: 32px;
        }

        .mask {
            position: absolute;
            top: 0px;
            left: 0px;
             100%;
            height: 100%;
            background: #000;
            opacity: 0.15;
            display: none;
        }

        .form-add {
            position: fixed;
            top: 30%;
            left: 50%;
            margin-left: -197px;
            padding-bottom: 20px;
            background: #fff;
            display: none;
        }

        .form-add-title {
            background-color: #f7f7f7;
            border- 1px 1px 0 1px;
            border-bottom: 0;
            margin-bottom: 15px;
            position: relative;
        }

        .form-add-title span {
             auto;
            height: 18px;
            font-size: 16px;
            font-family: ËÎÌå;
            font-weight: bold;
            color: rgb(102, 102, 102);
            text-indent: 12px;
            padding: 8px 0px 10px;
            margin-right: 10px;
            display: block;
            overflow: hidden;
            text-align: left;
        }

        .form-add-title div {
             16px;
            height: 20px;
            position: absolute;
            right: 10px;
            top: 6px;
            font-size: 30px;
            line-height: 16px;
            cursor: pointer;
        }

        .form-submit {
            text-align: center;
        }

        .form-submit input {
             170px;
            height: 32px;
        }
    </style>
</head>
<body>
<div class="wrap">
    <input type="button" value="清空内容" id="btn">
    <input type="button" value="添加" id="btnAdd">
    <table>
        <thead>
        <tr>
            <th>课程名称</th>
            <th>所属学院</th>
            <th>操作</th>
        </tr>
        </thead>
        <tbody id="j_tb">
        <tr>
            <!-- <td><input type="checkbox"/></td> -->
            <td>JavaScript</td>
            <td>传智播客-前端与移动开发学院</td>
            <td><a href="javascrip:;" class="get">DELETE</a></td>
        </tr>
        <tr>
            <!-- <td><input type="checkbox"/></td> -->
            <td>css</td>
            <td>传智播客-前端与移动开发学院</td>
            <td><a href="javascrip:;" class="get">DELETE</a></td>
        </tr>
        <tr>
            <!-- <td><input type="checkbox"/></td> -->
            <td>html</td>
            <td>传智播客-前端与移动开发学院</td>
            <td><a href="javascrip:;" class="get">DELETE</a></td>
        </tr>
        <tr>
            <td>jQuery</td>
            <td>传智播客-前端与移动开发学院</td>
            <td><a href="javascrip:;" class="get">DELETE</a></td>
        </tr>
        </tbody>
    </table>
</div>

<script src="jquery-1.12.4.js"></script>
<script>
    $(function () {
        //点击清空按钮注册事件，把tbody全部清除
        $("#btn").on("click",function () {
            $("#j_tb").empty();
        });
        //点击删除按钮注册事件
        $("#j_tb").on("click",".get",function () {
           $(this).parent().parent().remove();
        });
        //找到添加按钮，注册点击事件
        $("#btnAdd").on("click",function () {
            $('<tr> <td>jQuery111</td> <td>传智播客-前端与移动开发学院111</td> <td><a href="javascrip:;" class="get">DELETE</a></td> </tr>').appendTo("#j_tb");
        });
    });

</script>