（只使用php或javascript）所以我有一个待办事项列表，从数据库中加载用户的任务并将它们显示为列表项，每个显示的任务旁边都有一个删除按钮，我想从数据库中删除该任务当我单击旁边的删除按钮时，我在数据库用户（id，uid，email，pwd）和任务（id，content，useruid）下面是代码：`

<div class="tasks">
        <ul id="myUl">';
        require 'includes/dbh.inc.php';

    $sql = "SELECT * FROM tasks WHERE useruid=?;";
    $stmt = mysqli_stmt_init($conn);
    if (!mysqli_stmt_prepare($stmt,$sql) ) {
        header("location: ../main.php?errosqlerror");
        exit();
    }
    else {
        mysqli_stmt_bind_param($stmt,"s", $_SESSION['useruid'] );
        mysqli_stmt_execute($stmt);
        $result = mysqli_stmt_get_result($stmt);
        if( mysqli_num_rows ( $result ) > 0 ){
        while ( $row = mysqli_fetch_array($result)){
            echo '<li name="'.$row["id"].'"><button type="button" name="checked" title="Mark as completed" class="'.$row["id"].' checked"><i class="fa fa-check"></i></button>'.$row["content"].'<button  id="'.$row["id"].'" onclick="deleteTask(this.id)" name="close" title="Delete" class="close '.$row["id"].'"><i class="fa fa-times"></i></button></li>';
        }
    }
}
        echo '
        </ul>
        <br>
    </div>
    <div class="completed">
        <ul id="myUl1">
        </ul>
    </div>
    </form> `