我是JS,HTML和PHP的新手,通常我用C,C ++,Java編程...我試圖做一個簡單的頁面,用SQL從SQL調用一些數據,然后顯示它們:文本部分很好,但我不知道如何多次調用該腳本來創建多個獨立幻燈片
<script>
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
function currentSlide(n) {
showSlides(slideIndex = n);
}
function showSlides(n) {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
if (n > slides.length) {slideIndex = 1}
if (n < 1) {slideIndex = slides.length}
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
slides[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " active";
}
</script>
<?php
$connection = mysqli_connect('HOST', 'NAME', 'PASS') or die('Could not connect:' . mysqli_error());
mysqli_select_db($connection, 'DATABASE') or die('nulla :D');
$query = "SELECT marca, modello, anno, frontale, laterale, retro FROM table ORDER BY modello ASC";
$result = mysqli_query($connection, $query) or die('non stampa :D');
// conto il numero di occorrenze trovate nel db
$numrows = mysqli_num_rows($result);
// avvio un ciclo for che si ripete per il numero di occorrenze trovate
for ($x = 0; $x < $numrows; $x++)
{
// recupero il contenuto di ogni record trovato
$resrow = mysqli_fetch_row($result);
$marca = $resrow[0];
$modello = $resrow[1];
$anno = $resrow[2];
$frontale = $resrow[3];
$laterale = $resrow[4];
$retro = $resrow[5];
// stampo a video il risultato
echo "modello:" . $marca;
?>
<br />
<?php
echo "marca:" . $modello;
?>
<br />
<?php
echo "anno:" . $anno;
?>
<br />
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img src="<?php echo "$frontale"; ?>" style="width:100%">
<div class="text">Caption Text</div>
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 3</div>
<img src="<?php echo "$laterale"; ?>" style="width:100%">
<div class="text">Caption Two</div>
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 3</div>
<img src="<?php echo "$retro"; ?>g" style="width:100%">
<div class="text">Caption Three</div>
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
</div>
<br>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<?php
}
// chiudo la connessione
mysqli_close($connection);
?>