Question

我试图在时间（从数据库导入）中显示div - 当前时间将为0.如何做到这一点？这是代码：

while ($row = mysqli_fetch_array($result)) {
    echo "<div class='alert' id='" . $row['id'] . "' style='display:none'><br><br><center><h2>";
    echo $row['title'];
    echo "<br><br>";
    echo $row['category'];
    echo "</h2><br><br><hr><br><br></center>";
    echo $row['description'];
    echo "</div>";
    $timeFirst  = strtotime($row['date']);
    $timeSecond = strtotime("now");
    $differenceInSeconds = $timeFirst - $timeSecond;
    if ($differenceInSeconds==0)
    {
        echo "<script>";
        echo "$(document).ready(function(){";
        echo "$('#". $row['id'] . "').show();";
        echo "$('#". $row['id'] . "').delay(15000);";
        echo "$('#". $row['id'] . "').hide();";
        echo "});";
        echo "</script>";
    }
}

Answer 1

试一试： -

<?php 
    while ($row = mysqli_fetch_array($result)) {
        echo "<div class='alert' id='" . $row['id'] . "' style='display:none'><br><br><center><h2>";
        echo $row['title'];
        echo "<br><br>";
        echo $row['category'];
        echo "</h2><br><br><hr><br><br></center>";
        echo $row['description'];
        echo "</div>";
        $timeFirst  = strtotime($row['date']);
        $timeSecond = strtotime("now");
        $differenceInSeconds = $timeFirst - $timeSecond;

        if ($differenceInSeconds==0)
        { ?>
            <script>
                $(document).ready(function(){
                    $('#<?php echo $row['id'] ?>').show();
                    $('#<?php echo $row['id'] ?>').delay(15000);
                    $('#<?php echo $row['id'] ?>').hide();
                });
            </script>
        <?php }
    }
?>

Answer 2

我认为你想在你的javascript代码而不是setTimeout() PHP方面添加if ($differenceInSeconds==0) {}。

你还需要重写你的jQuery（有效地显示一个元素，不做任何事情并立即隐藏它）

$("#element").show();
$("#element").delay(15000);
$("#element").hide();

到

$("#element").show().delay(15000).hide(0);

以下完整代码。

while ($row = mysqli_fetch_array($result)) {
    echo "<div class='alert' id='" . $row['id'] . "' style='display:none'><br><br><center><h2>";
    echo $row['title'];
    echo "<br><br>";
    echo $row['category'];
    echo "</h2><br><br><hr><br><br></center>";
    echo $row['description'];
    echo "</div>";
    $timeFirst  = strtotime($row['date']);
    $timeSecond = strtotime("now");
    $differenceInSeconds = $timeFirst - $timeSecond;

    // Adding a setTimeout so your JS code actually gets written and executes when it should.
    if ($differenceInSeconds >= 0) {
        echo "<script>";
        echo "$(document).ready(function(){";
        echo "window.setTimeout(function() {";
        echo "$('#". $row['id'] . "').show().delay(15000).hide(0);";
        echo "}, " . $differenceInSeconds * 1000 . ");";
        echo "});";
        echo "</script>";
    }
}

变量（时间）为0时显示div

2 个答案: