Web Front-end
CSS Tutorial
Why Are My CSS Transitions Not Working With My JavaScript Slideshow?
Why Are My CSS Transitions Not Working With My JavaScript Slideshow?
Oct 29, 2024 am 09:06 AM
CSS Transitions Failure with JavaScript Application
In an attempt to enhance a slideshow with CSS3 transitions, a user encountered a puzzling issue: the transitions refused to function despite the correct styles being applied through JavaScript.
The JavaScript retrieves the slideshow slides and assigns predefined CSS classes to control animation. However, the specified transitions fail to activate. This phenomenon is not observed when the styles and transitions are manually applied using the developer tools console.
Through analysis, it was determined that for transitions to occur, three conditions must be met:
- The element's initial property must be explicitly defined, e.g., opacity: 0.
- A transition must be assigned to the element, e.g., transition: opacity 2s.
- The new property value must be applied, e.g., opacity: 1.
In the problematic JavaScript implementation, conditions 1 and 2 are dynamically assigned. As a result, there is no time delay for the browser to process and register the changes.
To resolve this issue, it is recommended to insert a delay before applying condition 3. This delay allows the browser to process the previous changes, ensuring that the transition property is properly recognized when its value is changed:
<code class="javascript">window.setTimeout(function() {
slides[targetIndex].className += " target-fadein";
}, 100); </code>
Alternatively, condition 3 can be applied directly within the HTML, ensuring that the transition property is defined during page load, eliminating the need for a delay in JavaScript:
<code class="html"><div class="target-fadein-begin" ...></div></code>
Once these conditions are satisfied, the animation triggered by the CSS3 transition will function as expected.
The above is the detailed content of Why Are My CSS Transitions Not Working With My JavaScript Slideshow?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How can I include CSS only on some pages?
Jun 11, 2025 am 12:01 AM
There are three ways to selectively include CSS on a specific page: 1. Inline CSS, suitable for pages that are not frequently accessed or require unique styles; 2. Load external CSS files using JavaScript conditions, suitable for situations where flexibility is required; 3. Containment on the server side, suitable for scenarios using server-side languages. This approach can optimize website performance and maintainability, but requires balance of modularity and performance.
Flexbox vs Grid: Understanding the Key Differences in CSS Layout
Jun 10, 2025 am 12:03 AM
Flexboxisidealforone-dimensionallayouts,whileGridsuitstwo-dimensional,complexlayouts.UseFlexboxforaligningitemsinasingleaxisandGridforprecisecontroloverrowsandcolumnsinintricatedesigns.
Creating an Auto-Closing Notification With an HTML Popover
Jun 10, 2025 am 09:45 AM
The HTML popover attribute transforms elements into top-layer elements that can be opened and closed with a button or JavaScript. Popovers can be dismissed a number of ways, but there is no option to auto-close them. Preethi has a technique you can u
What is 'render-blocking CSS'?
Jun 24, 2025 am 12:42 AM
CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control.
How to use Lotties in Figma
Jun 14, 2025 am 10:17 AM
In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig
Breaking Boundaries: Building a Tangram Puzzle With (S)CSS
Jun 13, 2025 am 11:33 AM
We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J
External vs. Internal CSS: What's the Best Approach?
Jun 20, 2025 am 12:45 AM
ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed
Does my CSS must be on lower case?
Jun 19, 2025 am 12:29 AM
No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams.
