我检查了我的轮播图像属性,如果它们未定义或为空,然后显示下一张幻灯片,但我有一点我无法修复的错误,所以我需要一些帮助。
我想告诉你我的情景:
如果我的data-large
为空或未定义,则在桌面(大屏幕)上然后显示下一张幻灯片
如果我的data-medium
为空或未定义,请在平板电脑(中等屏幕)上然后显示下一张幻灯片
如果我的data-small
为空或未定义,则在移动设备(小屏幕)上显示下一张幻灯片。
并使用我的轮播的下一个/上一个按钮检查属性
我尝试做某事,但它没有正常工作。
所以我猜我的controlImages()
函数编码不正确。
! function(e) {
e.fn.imageR = function(a) {
function i(e, i, r, u, n) {
$mediaQuery < a.large ? $mediaQuery < a.medium ? $mediaQuery < a.small || (n ? e.attr("src", i) : e.css("background-image", "url(" + i + ")")) : n ? e.attr("src", r) : e.css("background-image", "url(" + r + ")") : n ? e.attr("src", u) : e.css("background-image", "url(" + u + ")")
}
function r() {
$imageR.each(function() {
var e = jQuery(this),
a = e.data("small"),
r = e.data("medium"),
u = e.data("large"),
n = !1;
(void 0 === r || null === r) && (r = u), (void 0 === a || null === a) && (a = r), e.is("img") && (n = !0), i(e, a, r, u, n)
})
}
var u = {
small: "0",
medium: "480",
large: "1024"
};
a = e.extend(u, a), $imageR = jQuery(this), $mediaQuery = jQuery(window).width(), r(), jQuery(window).on("resize", function() {
$mediaQuery = jQuery(window).width(), r()
})
}
}(jQuery);
$(document).ready(function() {
$('.lazy_banner').imageR();
});
$(function() {
$('.lazy_banner').each(function(e) {
var
ElDesktop = $(this).data('large'),
ElTablet = $(this).data('medium'),
ElMobil = $(this).data('small');
function controlImages() {
if ($(window).width() >= 980) {
if (ElDesktop == "" || ElDesktop == undefined) {
$('#myCarousel').carousel('next');
}
} else if ($(window).width() < 768) {
if (ElTablet == "" || ElTablet == undefined) {
$('#myCarousel').carousel('next');
}
} else if ($(window).width() < 480) {
if (ElMobil == "" || ElMobil == undefined) {
$('#myCarousel').carousel('next');
}
}
}
$(window).on('load resize', function() {
controlImages();
});
});
});
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img {
height: 300px !important;
width: 100%;
}
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<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div class="item active">
<img class="lazy_banner" data-large="https://image.ibb.co/dh3MSk/desktop_1.jpg" data-medium="" data-small="https://image.ibb.co/bVYc05/mobil.jpg">
</div>
<div class="item">
<img class="lazy_banner" data-large="https://images.pexels.com/photos/40797/wild-flowers-flowers-plant-macro-40797.jpeg" data-medium="https://images.pexels.com/photos/30865/pexels-photo-30865.jpg" data-small="https://images.pexels.com/photos/122429/leaf-nature-green-spring-122429.jpeg">
</div>
<div class="item">
<img class="lazy_banner" data-large="" data-medium="https://www.jssor.com/demos/img/gallery/980x380/013.jpg" data-small="https://www.jssor.com/demos/img/gallery/980x380/015.jpg">
</div>
</div>
<!-- Left and right controls -->
<a class="left carousel-control" href="#myCarousel" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/js/bootstrap.min.js"></script>
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答案 0 :(得分:0)
好吧,我的朋友,花了一点但我想出来给你: https://codepen.io/anon/pen/LLeLOg
$('#myCarousel').on('slid.bs.carousel', function(){
var ElDesktop = $(this).find('.active img').attr('data-large'),
ElTablet = $(this).find('.active img').attr('data-medium'),
ElMobil = $(this).find('.active img').attr('data-small');
if(ElDesktop == '' || ElTablet == '' || ElMobil == ''){
$('#myCarousel').carousel('next');
}
})
在幻灯片上有一个引导指示符(slid.bs.carousel),在完成时有一个(slide.bs.carousel)。只需在最后添加该脚本即可。此外,您正在选择(此),这是div而不是具有属性的图像。