


How to Build a Simple jQuery Image Slider with Sliding and Opacity Effects?
Nov 24, 2024 pm 03:43 PMBuilding a Simple jQuery Image Slider with Sliding and Opacity Effects
Creating a custom image slider in jQuery without relying on external plugins provides greater flexibility and control. Here's a simplified approach that offers both sliding and opacity transition effects.
jQuery Functions for Traversing and Manipulation
Before diving into the code, understanding two key jQuery functions is essential:
- index() returns the position of an element within its sibling elements.
- eq() selects an element based on its position (index value).
Opacity Effect
In the opacity effect, images are positioned absolutely and overlapped using CSS. When a trigger element is clicked, the corresponding image fades in while others fade out, relying on jQuery's fadeIn() and fadeOut() functions.
Sliding Effect
For the sliding effect, we use a double wrapper and mask technique. The images are placed inside a masked area, and a specific image is revealed by sliding the mask over it, giving the illusion of a sliding transition.
Common jQuery Response
Both the opacity and sliding effects share a common jQuery response that handles triggers (navigation elements), next/previous click events, and automatic timing transitions.
HTML Structure
<ul class="images"> <li> <img src="images/1.jpg" alt="1" /> </li> <li> <img src="images/2.jpg" alt="2" /> </li> ... </ul> <ul class="triggers"> <li>1</li> <li>2</li> ... </ul> <span class="control prev">Prev</span> <span class="control next">Next</span>
Opacity Effect Code
ul.images { position:relative; } ul.images li { position:absolute; }
var target; var triggers = $('ul.triggers li'); var images = $('ul.images li'); var lastElem = triggers.length-1; triggers.first().addClass('active'); images.hide().first().show(); function sliderResponse(target) { images.fadeOut(300).eq(target).fadeIn(300); triggers.removeClass('active').eq(target).addClass('active'); }
Sliding Effect Code
.mask { float:left; margin:40px; width:270px; height:266px; overflow:hidden; } ul.images { position:relative; top:0px;left:0px; } /* this width must be total of the images, it comes from jquery */ ul.images li { float:left; }
var target; var triggers = $('ul.triggers li'); var images = $('ul.images li'); var lastElem = triggers.length-1; var mask = $('.mask ul.images'); var imgWidth = images.width(); triggers.first().addClass('active'); mask.css('width', imgWidth*(lastElem+1) +'px'); function sliderResponse(target) { mask.stop(true,false).animate({'left':'-'+ imgWidth*target +'px'},300); triggers.removeClass('active').eq(target).addClass('active'); }
Common jQuery Response
triggers.click(function() { if ( !$(this).hasClass('active') ) { target = $(this).index(); sliderResponse(target); resetTiming(); } }); $('.next').click(function() { target = $('ul.triggers li.active').index(); target === lastElem ? target = 0 : target = target+1; sliderResponse(target); resetTiming(); }); $('.prev').click(function() { target = $('ul.triggers li.active').index(); lastElem = triggers.length-1; target === 0 ? target = lastElem : target = target-1; sliderResponse(target); resetTiming(); }); function sliderTiming() { target = $('ul.triggers li.active').index(); target === lastElem ? target = 0 : target = target+1; sliderResponse(target); } var timingRun = setInterval(function() { sliderTiming(); },5000); function resetTiming() { clearInterval(timingRun); timingRun = setInterval(function() { sliderTiming(); },5000); }
This codebase provides a fully functional jQuery image slider with sliding and opacity transition effects, customizable through CSS and various jQuery functions.
The above is the detailed content of How to Build a Simple jQuery Image Slider with Sliding and Opacity Effects?. For more information, please follow other related articles on the PHP Chinese website!

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