jquery 淡入淡出效果不起作用

Question

我正在尝试学习jquery，我想创建在图像中循环的淡入和淡出效果。我已经使用 setInterval 函数来循环浏览图像，但它仅适用于第一次迭代。

$(document).ready(function() {
var newcount = 0;
var image = $(".image-store img");
image.hide();
var image_array = [];
image.each(function() {
image_array.push($(this).attr('src'));
});
var showimg = $(".image-disp img");
showimg.attr("src", image_array[newcount]);
setInterval(function() {
showimg.fadeOut(2000, function() {
newcount = newcount + 1;
showimg.attr("src", image_array[newcount]);
showimg.fadeIn(2000);
});
if (newcount == image_array.length) {
newcount = -1;
}
}, 3000);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="image-store">
<img src="img/img1.jpg">
<img src="img/img2.jpg">
<img src="img/img3.jpg">
</div>
<div class="image-disp">
<img src="">
</div>

Answer 1

它有效，但代码末尾缺少});。使用浏览器控制台了解是否有任何错误。

Answer 2

$(document).ready(function() {
var newcount = 0;
var image = $(".image-store img");
image.hide();
var image_array = [];
image.each(function() {
image_array.push($(this).attr('src'));
});
var showimg = $(".image-disp img");
showimg.attr("src", image_array[newcount]);
setInterval(function() {
showimg.fadeOut(2000, function() {
newcount = newcount + 1;
showimg.attr("src", image_array[newcount]);
showimg.fadeIn(2000);
});
if (newcount == image_array.length) {
newcount = -1;
}
}, 3000);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="image-store">
<img width="50" src="https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png">
<img src="https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png">
<img width="50" src="https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png">
</div>
<div class="image-disp">
<img width="200" src="">
</div>