I have a concept that involves three background images transitioning in and out every 5 seconds. Additionally, I am utilizing the native bootstrap carousel feature to slide text in synchronization with the changing background images.
Solving the Issue
Challenge 1: The initial background image is displayed upon page load. After 5 seconds, the second background image fades in while the carousel transitions to the next text. Following another 5-second interval, the third background image appears as the carousel moves to the subsequent text.
Challenge 2: When a user clicks on a carousel indicator, I aim for the background image to also change accordingly. For instance, clicking on indicator 1 should fade the background image to the first one. However, this transition should occur only if the clicked indicator does not match the current active item in both the carousel and background image.
Current Status
I have successfully implemented the fading effect for the background images using jQuery based on guidance from Stack Overflow. Similarly, I have set up the text carousel through the bootstrap component with a switching time of 5 seconds to align with the background image transitions. Despite these achievements, there is still a slight delay between the transitions. How can this delay be minimized?
Occasionally, the image flashes before fading, indicating room for improvement in achieving a smoother fading effect without any flickering. Are there better methods to address this issue?
The challenge lies in ensuring that clicking on a carousel indicator triggers a seamless transition of the background image to correspond with the selected carousel item. Despite attempting to implement a function for this purpose, it seems ineffective. What steps should be taken to achieve this functionality correctly?
Here are the approaches I have explored:
// JavaScript code snippet
var bgImageArray = ["1_ozdgvm.jpg", "2_vjtjfy.jpg", "3_oxpdx2.jpg"],
base = "https://res.cloudinary.com/iolamide/image/upload/v1604569872/home_banner_",
secs = 5;
bgImageArray.forEach(function(img) {
new Image().src = base + img;
});
function backgroundSequence() {
window.clearTimeout();
var k = 0;
for (i = 0; i < bgImageArray.length; i++) {
setTimeout(function() {
document.getElementById('animated-bg').style.backgroundImage = "url(" + base + bgImageArray[k] + ")";
if ((k + 1) === bgImageArray.length) {
setTimeout(function() {
backgroundSequence()
}, (secs * 1000))
} else {
k++;
}
}, (secs * 1000) * i)
}
}
backgroundSequence();
$('.carousel-item').click(function() {
backgroundSequence();
})// CSS styles
*,
*::before,
*::after {
margin: 0;
padding: 0;
}
html {
box-sizing: border-box;
}
body {
box-sizing: inherit;
color: #fff !important;
}
.animated-bg {
// Add your background image properties here
}
.container {
// Adjust container styling as needed
}
.text-top p {
// Additional style rules for text section
}
h1 {
// Customize heading styles
}
.carousel-item p {
// Styling for carousel items
}
@media only screen and (max-width: 800px) {
// Responsive design considerations
}
@media only screen and (max-width: 500px) {
// Adjustments for smaller screens
}<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<div class="animated-bg" id="animated-bg">
<div class="container">
<div class="text-top" id="texttop">
<h1>Crossfade and Text Carousel</h1>
<p>Fade background image and swipe text at the same time. Also fade the background image to the one that matches the carousel's text when the carousel's indicator is clicked</p>
</div>
<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel" data-interval="5000">
<ol class="carousel-indicators">
<li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
</ol>
<div class="carousel-inner">
<div class="carousel-item active">
<p>
Carousel Text One
</p>
</div>
<div class="carousel-item">
<p>Carousel Text Two</p>
</div>
<div class="carousel-item">
<p>Carousel Text Three</p>
</div>
</div>
</div>
</div>
</div>