a标签提交表单

  <form action="todo.php" method="post" id="form_add_todo" name="form_add_todo">

                    <input type="checkbox" value="<?php echo $value['completed'] == 1 ? 'true' : 'false' ?>">

                        <?php echo $value['content'] ?>
                        -
                        <a href="#" class="delete" >删除</a>
                        <input type="hidden" name="type" value="delete">
                        <input type="hidden" name="id" value="<?php echo $value['id'];?>">
<!--                        <input type="submit" class="input_delete" style="display:none" value="确认删除"/>-->
                    </form>

<script>

    $(function () {
        $('.delete').each(function (i) {
            this.onclick = function () {
                $('#form_add_todo').eq(i).submit();
                return false;
            };
        });
    });
</script>