Comment créer un curseur d'image jQuery simple avec un effet de glissement ou d'opacité?

Certains d'entre nous pourraient ne pas vouloir utiliser des plugins prêts à cause de leur taille élevée et de créer des conflits avec les javascript actuels.

J'utilisais des plugins slider légers avant, mais lorsque le client donne une révision modulaire, il est devenu très difficile à manipuler. Ensuite, je vise à construire le mien pour la personnaliser facilement. Je crois que les curseurs ne devraient pas être complexes à construire depuis le début.

Qu'est-ce qu'un moyen simple et propre de créer un curseur d'image jQuery?

    Avant d'inspecter les exemples, vous devez connaître deux fonctions jQuery que j'ai le plus utilisées.

    La valeur de retour d' index () est un nombre entier indiquant la position du premier élément dans l'objet jQuery par rapport à ses éléments de fratrie.

    Eq () sélectionne un élément en fonction de sa position (valeur d'index).

    En principe, je prends la index value l'élément de déclenchement sélectionné et je correspond à cette valeur sur les images avec la méthode eq .

    Effet FadeIn / FadeOut .

    – Effet coulissant .

    – réponse alternative de la souris .


    Exemple html:

     <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> 

    EFFET D'OPACITÉ: jsFiddle.

    Css trick: superposition d'images avec position: absolue

     ul.images { position:relative; } ul.images li { position:absolute; } 

    JQuery:

     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'); } 

    EFFET COULISSANT: jsFiddle.

    Css trick: avec double enveloppe et utilisez l'enfant comme masque

     .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; } 

    JQuery:

     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'); } 

    Réponse jQuery commune pour les deux curseurs:

    ( Déclenche + clic / calendrier suivant et calendrier )

     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); } 

    Voici un code simple et facile à comprendre pour Créer un diaporama d'image en utilisant JavaScript sans utiliser Jquery.

     <script language="JavaScript"> var i = 0; var path = new Array(); // LIST OF IMAGES path[0] = "image_1.gif"; path[1] = "image_2.gif"; path[2] = "image_3.gif"; function swapImage() { document.slide.src = path[i]; if(i < path.length - 1) i++; else i = 0; setTimeout("swapImage()",3000); } window.onload=swapImage; </script> <img height="200" name="slide" src="image_1.gif" width="400" /> 

    J'ai écrit un didacticiel sur la création d'un diaporama, La page du didacticiel Si le lien devient invalide, j'ai inclus le code dans ma réponse ci-dessous.

    Le html:

     <div id="slideShow"> <div id="slideShowWindow"> <div class="slide"> <img src="”img1.png”/"> <div class="slideText"> <h2>The Slide Title</h2> <p>This is the slide text</p> </div> <!-- </slideText> --> </div> <!-- </slide> repeat as many times as needed --> </div> <!-- </slideShowWindow> --> </div> <!-- </slideshow> --> 

    Css:

     img { display: block; width: 100%; height: auto; } p{ background:none; color:#ffffff; } #slideShow #slideShowWindow { width: 650px; height: 450px; margin: 0; padding: 0; position: relative; overflow:hidden; margin-left: auto; margin-right:auto; } #slideShow #slideShowWindow .slide { margin: 0; padding: 0; width: 650px; height: 450px; float: left; position: relative; margin-left:auto; margin-right: auto; } #slideshow #slideshowWindow .slide, .slideText { position:absolute; bottom:18px; left:0; width:100%; height:auto; margin:0; padding:0; color:#ffffff; font-family:Myriad Pro, Arial, Helvetica, sans-serif; } .slideText { background: rgba(128, 128, 128, 0.49); } #slideshow #slideshowWindow .slide .slideText h2, #slideshow #slideshowWindow .slide .slideText p { margin:10px; padding:15px; } .slideNav { display: block; text-indent: -10000px; position: absolute; cursor: pointer; } #leftNav { left: 0; bottom: 0; width: 48px; height: 48px; background-image: url("../Images/plus_add_minus.png"); background-repeat: no-repeat; z-index: 10; } #rightNav { right: 0; bottom: 0; width: 48px; height: 48px; background-image: url("../Images/plus_add_green.png"); background-repeat: no-repeat; z-index: 10; } 

    JQuery:

     $(document).ready(function () { var currentPosition = 0; var slideWidth = 650; var slides = $('.slide'); var numberOfSlides = slides.length; var slideShowInterval; var speed = 3000; //Assign a timer, so it will run periodically slideShowInterval = setInterval(changePosition, speed); slides.wrapAll('<div id="slidesHolder"></div>'); slides.css({ 'float': 'left' }); //set #slidesHolder width equal to the total width of all the slides $('#slidesHolder').css('width', slideWidth * numberOfSlides); $('#slideShowWindow') .prepend('<span class="slideNav" id="leftNav">Move Left</span>') .append('<span class="slideNav" id="rightNav">Move Right</span>'); manageNav(currentPosition); //tell the buttons what to do when clicked $('.slideNav').bind('click', function () { //determine new position currentPosition = ($(this).attr('id') === 'rightNav') ? currentPosition + 1 : currentPosition - 1; //hide/show controls manageNav(currentPosition); clearInterval(slideShowInterval); slideShowInterval = setInterval(changePosition, speed); moveSlide(); }); function manageNav(position) { //hide left arrow if position is first slide if (position === 0) { $('#leftNav').hide(); } else { $('#leftNav').show(); } //hide right arrow is slide position is last slide if (position === numberOfSlides - 1) { $('#rightNav').hide(); } else { $('#rightNav').show(); } } //changePosition: this is called when the slide is moved by the timer and NOT when the next or previous buttons are clicked function changePosition() { if (currentPosition === numberOfSlides - 1) { currentPosition = 0; manageNav(currentPosition); } else { currentPosition++; manageNav(currentPosition); } moveSlide(); } //moveSlide: this function moves the slide function moveSlide() { $('#slidesHolder').animate({ 'marginLeft': slideWidth * (-currentPosition) }); } }); 

    J'ai récemment créé une solution avec une galerie d'images et un curseur qui s'affiche lorsqu'une image est cliquée.

    Jetez un oeil au code ici: Code GitHub

    Et un exemple en direct ici: Exemple de code

     var CreateGallery = function(parameters) { var self = this; this.galleryImages = []; this.galleryImagesSrcs = []; this.galleryImagesNum = 0; this.counter; this.galleryTitle = parameters.galleryTitle != undefined ? parameters.galleryTitle : 'Gallery image'; this.maxMobileWidth = parameters.maxMobileWidth != undefined ? parameters.maxMobileWidth : 768; this.numMobileImg = parameters.numMobileImg != undefined ? parameters.numMobileImg : 2; this.maxTabletWidth = parameters.maxTabletWidth != undefined ? parameters.maxTabletWidth : 1024; this.numTabletImg = parameters.numTabletImg != undefined ? parameters.numTabletImg : 3; this.addModalGallery = function(gallerySelf = self){ var $div = $(document.createElement('div')).attr({ 'id': 'modal-gallery' }).append($(document.createElement('div')).attr({ 'class': 'header' }).append($(document.createElement('button')).attr({ 'class': 'close-button', 'type': 'button' }).html('&times;') ).append($(document.createElement('h2')).text(gallerySelf.galleryTitle)) ).append($(document.createElement('div')).attr({ 'class': 'text-center' }).append($(document.createElement('img')).attr({ 'id': 'gallery-img' }) ).append($(document.createElement('button')).attr({ 'class': 'prev-button', 'type': 'button' }).html('&#9668;') ).append($(document.createElement('button')).attr({ 'class': 'next-button', 'type': 'button' }).html('&#9658;') ) ); parameters.element.after($div); }; $(document).on('click', 'button.prev-button', {self: self}, function() { var $currImg = self.counter >= 1 ? self.galleryImages[--self.counter] : self.galleryImages[self.counter]; var $currHash = self.galleryImagesSrcs[self.counter]; var $src = $currImg.src; window.location.hash = $currHash; $('img#gallery-img').attr('src', $src); $('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1)); }); $(document).on('click', 'button.next-button', {self: self}, function() { var $currImg = self.counter < (self.galleryImagesNum - 1) ? self.galleryImages[++self.counter] : self.galleryImages[self.counter]; var $currHash = self.galleryImagesSrcs[self.counter]; var $src = $currImg.src; window.location.hash = $currHash; $('img#gallery-img').attr('src', $src); $('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1)); }); $(document).on('click', 'div#modal-gallery button.close-button', function() { $('#modal-gallery').css('position', 'relative'); $('#modal-gallery').hide(); $('body').css('overflow', 'visible'); }); parameters.element.find('a').on('click', {self: self}, function(event) { event.preventDefault(); $('#modal-gallery').css('position', 'fixed'); $('#modal-gallery').show(); $('body').css('overflow', 'hidden'); var $currHash = this.hash.substr(1); self.counter = self.galleryImagesSrcs.indexOf($currHash); var $src = $currHash; window.location.hash = $currHash; $('img#gallery-img').attr('src', $src); $('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1)); }); this.sizeGallery = function(gallerySelf = self) { var $modalGallery = $(document).find("div#modal-gallery"); if($modalGallery.length <= 0) { this.addModalGallery(); } var $windowWidth = $(window).width(); var $parentWidth = parameters.element.width(); var $thumbnailHref = parameters.element.find('img:first').attr('src'); if($windowWidth < gallerySelf.maxMobileWidth) { var percentMobile = Math.floor(100 / gallerySelf.numMobileImg); var emMobile = 0; var pxMobile = 2; // var emMobile = gallerySelf.numMobileImg * 0.4; // var pxMobile = gallerySelf.numMobileImg * 2; parameters.element.find('img').css('width', 'calc('+percentMobile+'% - '+emMobile+'em - '+pxMobile+'px)'); } else if($windowWidth < gallerySelf.maxTabletWidth) { var percentTablet = Math.floor(100 / gallerySelf.numTabletImg); var emTablet = 0; var pxTablet = 2; // var emTablet = gallerySelf.numMobileImg * 0.4; // var pxTablet = gallerySelf.numMobileImg * 2; parameters.element.find('img').css('width', 'calc('+percentTablet+'% - '+emTablet+'em - '+pxTablet+'px)'); } else { var $thumbImg = new Image(); $thumbImg.src = $thumbnailHref; $thumbImg.onload = function() { var $thumbnailWidth = this.width; if($parentWidth > 0 && $thumbnailWidth > 0) { parameters.element.find('img').css('width', (Math.ceil($thumbnailWidth * 100 / $parentWidth))+'%'); } }; } }; this.startGallery = function(gallerySelf = self) { parameters.element.find('a').each(function(index, el) { var $currHash = el.hash.substr(1); var $img = new Image(); $img.src = $currHash; gallerySelf.galleryImages.push($img); gallerySelf.galleryImagesSrcs.push($currHash); }); this.galleryImagesNum = this.galleryImages.length; }; this.sizeGallery(); this.startGallery(); }; var myGallery; $(window).on('load', function() { myGallery = new CreateGallery({ element: $('#div-gallery'), maxMobileWidth: 768, numMobileImg: 2, maxTabletWidth: 1024, numTabletImg: 3 }); }); $(window).on('resize', function() { myGallery.sizeGallery(); }); 
     #div-gallery { text-align: center; } #div-gallery img { margin-right: auto; margin-left: auto; } div#modal-gallery { top: 0; left: 0; width: 100%; max-width: none; height: 100vh; min-height: 100vh; margin-left: 0; border: 0; border-radius: 0; z-index: 1006; -webkit-backface-visibility: hidden; backface-visibility: hidden; display: none; background-color: #fefefe; position: relative; margin-right: auto; overflow-y: auto; padding: 0; } div#modal-gallery div.header { position: relative; } div#modal-gallery div.header h2 { margin-left: 1rem; } div#modal-gallery div.header button.close-button { position: absolute; top: calc(50% - 1em); right: 1rem; } div#modal-gallery img { display: block; max-width: 98%; max-height: calc(100vh - 5em); margin-right: auto; margin-left: auto; } div#modal-gallery div.text-center { position: relative; } button.close-button { display: inline-block; padding: 6px 12px; margin-bottom: 0; font-size: 20px; font-weight: 400; line-height: 1.42857143; text-align: center; white-space: nowrap; vertical-align: middle; -ms-touch-action: manipulation; touch-action: manipulation; cursor: pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; background-image: none; border: 1px solid transparent; border-radius: 4px; color: #333; background-color: #fff; border-color: #ccc; } button.close-button:hover, button.close-button:focus { background-color: #ddd; } button.next-button:hover, button.prev-button:hover, button.next-button:focus, button.prev-button:focus { color: #fff; text-decoration: none; filter: alpha(opacity=90); outline: 0; opacity: .9; } button.next-button, button.prev-button { position: absolute; top: 0; bottom: 0; left: 0; width: 15%; font-size: 20px; color: #fff; text-align: center; text-shadow: 0 1px 2px rgba(0,0,0,.6); background-color: rgba(0,0,0,0); filter: alpha(opacity=50); opacity: .5; border: none; } button.next-button { right: 0; left: auto; background-image: -webkit-linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%); background-image: -o-linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%); background-image: -webkit-gradient(linear,left top,right top,from(rgba(0,0,0,.0001)),to(rgba(0,0,0,.5))); background-image: linear-gradient(to right,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00000000', endColorstr='#80000000', GradientType=1); background-repeat: repeat-x; } button.prev-button { background-image: -webkit-linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%); background-image: -o-linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%); background-image: -webkit-gradient(linear,left top,right top,from(rgba(0,0,0,.5)),to(rgba(0,0,0,.0001))); background-image: linear-gradient(to right,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#00000000', GradientType=1); background-repeat: repeat-x; } 
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <div id="div-gallery"> <a href="#http://placehold.it/1024x1024/ff0000/000000?text=Gallery+image+1"><img src="http://placehold.it/300x300/ff0000/000000?text=Gallery+image+1" alt=""></a> <a href="#http://placehold.it/1024x1024/ff4000/000000?text=Gallery+image+2"><img src="http://placehold.it/300x300/ff4000/000000?text=Gallery+image+2" alt=""></a> <a href="#http://placehold.it/1024x1024/ff8000/000000?text=Gallery+image+3"><img src="http://placehold.it/300x300/ff8000/000000?text=Gallery+image+3" alt=""></a> <a href="#http://placehold.it/1024x1024/ffbf00/000000?text=Gallery+image+4"><img src="http://placehold.it/300x300/ffbf00/000000?text=Gallery+image+4" alt=""></a> <a href="#http://placehold.it/1024x1024/ffff00/000000?text=Gallery+image+5"><img src="http://placehold.it/300x300/ffff00/000000?text=Gallery+image+5" alt=""></a> <a href="#http://placehold.it/1024x1024/bfff00/000000?text=Gallery+image+6"><img src="http://placehold.it/300x300/bfff00/000000?text=Gallery+image+6" alt=""></a> <a href="#http://placehold.it/1024x1024/80ff00/000000?text=Gallery+image+7"><img src="http://placehold.it/300x300/80ff00/000000?text=Gallery+image+7" alt=""></a> <a href="#http://placehold.it/1024x1024/40ff00/000000?text=Gallery+image+8"><img src="http://placehold.it/300x300/40ff00/000000?text=Gallery+image+8" alt=""></a> <a href="#http://placehold.it/1024x1024/00ff00/000000?text=Gallery+image+9"><img src="http://placehold.it/300x300/00ff00/000000?text=Gallery+image+9" alt=""></a> <a href="#http://placehold.it/1024x1024/00ff40/000000?text=Gallery+image+10"><img src="http://placehold.it/300x300/00ff40/000000?text=Gallery+image+10" alt=""></a> <a href="#http://placehold.it/1024x1024/00ff80/000000?text=Gallery+image+11"><img src="http://placehold.it/300x300/00ff80/000000?text=Gallery+image+11" alt=""></a> <a href="#http://placehold.it/1024x1024/00ffbf/000000?text=Gallery+image+12"><img src="http://placehold.it/300x300/00ffbf/000000?text=Gallery+image+12" alt=""></a> <a href="#http://placehold.it/1024x1024/00ffff/000000?text=Gallery+image+13"><img src="http://placehold.it/300x300/00ffff/000000?text=Gallery+image+13" alt=""></a> <a href="#http://placehold.it/1024x1024/00bfff/000000?text=Gallery+image+14"><img src="http://placehold.it/300x300/00bfff/000000?text=Gallery+image+14" alt=""></a> <a href="#http://placehold.it/1024x1024/0080ff/000000?text=Gallery+image+15"><img src="http://placehold.it/300x300/0080ff/000000?text=Gallery+image+15" alt=""></a> <a href="#http://placehold.it/1024x1024/0040ff/000000?text=Gallery+image+16"><img src="http://placehold.it/300x300/0040ff/000000?text=Gallery+image+16" alt=""></a> </div>