这款HTML5焦点图不仅可以手动点击按钮切换图片，而且还支持自动切换图片，使用起来也相当方便。如果你需要在网站中展示产品图片，那么这款焦点图插件非常适合你。

在线演示源码下载

HTML代码

<section id="dg-container" class="dg-container"> <div class="dg-wrapper"> <a href="#"><img src="images/1.jpg" alt="image01"><div>http:///</div></a> </div> <nav> <span class="dg-prev">&lt;</span> <span class="dg-next">&gt;</span> </nav></section>

CSS代码

.dg-container{ width: 100%; height: 450px; position: relative;}.dg-wrapper{ width: 481px; height: 316px; margin: 0 auto; position: relative; -webkit-transform-style: preserve-3d; -moz-transform-style: preserve-3d; -o-transform-style: preserve-3d; -ms-transform-style: preserve-3d; transform-style: preserve-3d; -webkit-perspective: 1000px; -moz-perspective: 1000px; -o-perspective: 1000px; -ms-perspective: 1000px; perspective: 1000px;}.dg-wrapper a{ width: 482px; height: 316px; display: block; position: absolute; left: 0; top: 0; background: transparent url(../images/browser.png) no-repeat top left; box-shadow: 0px 10px 20px rgba(0,0,0,0.3);}.dg-wrapper a.dg-transition{ -webkit-transition: all 0.5s ease-in-out; -moz-transition: all 0.5s ease-in-out; -o-transition: all 0.5s ease-in-out; -ms-transition: all 0.5s ease-in-out; transition: all 0.5s ease-in-out;}.dg-wrapper a img{ display: block; padding: 41px 0px 0px 1px;}.dg-wrapper a div{ font-style: italic; text-align: center; line-height: 50px; text-shadow: 1px 1px 1px rgba(255,255,255,0.5); color: #333; font-size: 16px; width: 100%; bottom: -55px; display: none; position: absolute;}.dg-wrapper a.dg-center div{ display: block;}.dg-container nav{ width: 58px; position: absolute; z-index: 1000; bottom: 40px; left: 50%; margin-left: -29px;}.dg-container nav span{ text-indent: -9000px; float: left; cursor:pointer; width: 24px; height: 25px; opacity: 0.8; background: transparent url(../images/arrows.png) no-repeat top left;}.dg-container nav span:hover{ opacity: 1;}.dg-container nav span.dg-next{ background-position: top right; margin-left: 10px;}

JavaScript代码

/** * jquery.gallery.js * Copyright 2011, Pedro Botelho / Codrops * Free to use under the MIT license. * * Date: Mon Jan 30 2012 */(function( $, undefined ) { /* * Gallery object. */ $.Gallery = function( options, element ) { this.$el = $( element ); this._init( options ); }; $.Gallery.defaults = { current : 0, // index of current item autoplay : false,// slideshow on / off interval : 2000 // time between transitions }; $.Gallery.prototype = { _init : function( options ) { this.options = $.extend( true, {}, $.Gallery.defaults, options ); // support for 3d / 2d transforms and transitions this.support3d = Modernizr.csstransforms3d; this.support2d = Modernizr.csstransforms; this.supportTrans = Modernizr.csstransitions; this.$wrapper = this.$el.find('.dg-wrapper'); this.$items = this.$wrapper.children(); this.itemsCount = this.$items.length; this.$nav = this.$el.find('nav'); this.$navPrev = this.$nav.find('.dg-prev'); this.$navNext = this.$nav.find('.dg-next'); // minimum of 3 items if( this.itemsCount < 3 ) { this.$nav.remove(); return false; } this.current = this.options.current; this.isAnim = false; this.$items.css({ 'opacity' : 0, 'visibility': 'hidden' }); this._validate(); this._layout(); // load the events this._loadEvents(); // slideshow if( this.options.autoplay ) { this._startSlideshow(); } }, _validate : function() { if( this.options.current < 0 || this.options.current > this.itemsCount - 1 ) { this.current = 0; } }, _layout : function() { // current, left and right items this._setItems(); // current item is not changed // left and right one are rotated and translated var leftCSS, rightCSS, currentCSS; if( this.support3d && this.supportTrans ) { leftCSS = { '-webkit-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-moz-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-o-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-ms-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', 'transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)' }; rightCSS = { '-webkit-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-moz-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-o-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-ms-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', 'transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)' }; leftCSS.opacity = 1; leftCSS.visibility = 'visible'; rightCSS.opacity = 1; rightCSS.visibility = 'visible'; } else if( this.support2d && this.supportTrans ) { leftCSS = { '-webkit-transform' : 'translate(-350px) scale(0.8)', '-moz-transform' : 'translate(-350px) scale(0.8)', '-o-transform' : 'translate(-350px) scale(0.8)', '-ms-transform' : 'translate(-350px) scale(0.8)', 'transform' : 'translate(-350px) scale(0.8)' }; rightCSS = { '-webkit-transform' : 'translate(350px) scale(0.8)', '-moz-transform' : 'translate(350px) scale(0.8)', '-o-transform' : 'translate(350px) scale(0.8)', '-ms-transform' : 'translate(350px) scale(0.8)', 'transform' : 'translate(350px) scale(0.8)' }; currentCSS = { 'z-index' : 999 }; leftCSS.opacity = 1; leftCSS.visibility = 'visible'; rightCSS.opacity = 1; rightCSS.visibility = 'visible'; } this.$leftItm.css( leftCSS || {} ); this.$rightItm.css( rightCSS || {} ); this.$currentItm.css( currentCSS || {} ).css({ 'opacity' : 1, 'visibility': 'visible' }).addClass('dg-center'); }, _setItems : function() { this.$items.removeClass('dg-center'); this.$currentItm = this.$items.eq( this.current ); this.$leftItm = ( this.current === 0 ) ? this.$items.eq( this.itemsCount - 1 ) : this.$items.eq( this.current - 1 ); this.$rightItm = ( this.current === this.itemsCount - 1 ) ? this.$items.eq( 0 ) : this.$items.eq( this.current + 1 ); if( !this.support3d && this.support2d && this.supportTrans ) { this.$items.css( 'z-index', 1 ); this.$currentItm.css( 'z-index', 999 ); } // next & previous items if( this.itemsCount > 3 ) { // next item this.$nextItm = ( this.$rightItm.index() === this.itemsCount - 1 ) ? this.$items.eq( 0 ) : this.$rightItm.next(); this.$nextItm.css( this._getCoordinates('outright') ); // previous item this.$prevItm = ( this.$leftItm.index() === 0 ) ? this.$items.eq( this.itemsCount - 1 ) : this.$leftItm.prev(); this.$prevItm.css( this._getCoordinates('outleft') ); } }, _loadEvents : function() { var _self = this; this.$navPrev.on( 'click.gallery', function( event ) { if( _self.options.autoplay ) { clearTimeout( _self.slideshow ); _self.options.autoplay = false; } _self._navigate('prev'); return false; }); this.$navNext.on( 'click.gallery', function( event ) { if( _self.options.autoplay ) { clearTimeout( _self.slideshow ); _self.options.autoplay = false; } _self._navigate('next'); return false; }); this.$wrapper.on( 'webkitTransitionEnd.gallery transitionend.gallery OTransitionEnd.gallery', function( event ) { _self.$currentItm.addClass('dg-center'); _self.$items.removeClass('dg-transition'); _self.isAnim = false; }); }, _getCoordinates : function( position ) { if( this.support3d && this.supportTrans ) { switch( position ) { case 'outleft': return { '-webkit-transform' : 'translateX(-450px) translateZ(-300px) rotateY(45deg)', '-moz-transform' : 'translateX(-450px) translateZ(-300px) rotateY(45deg)', '-o-transform' : 'translateX(-450px) translateZ(-300px) rotateY(45deg)', '-ms-transform' : 'translateX(-450px) translateZ(-300px) rotateY(45deg)', 'transform' : 'translateX(-450px) translateZ(-300px) rotateY(45deg)', 'opacity' : 0, 'visibility' : 'hidden' }; break; case 'outright': return { '-webkit-transform' : 'translateX(450px) translateZ(-300px) rotateY(-45deg)', '-moz-transform' : 'translateX(450px) translateZ(-300px) rotateY(-45deg)', '-o-transform' : 'translateX(450px) translateZ(-300px) rotateY(-45deg)', '-ms-transform' : 'translateX(450px) translateZ(-300px) rotateY(-45deg)', 'transform' : 'translateX(450px) translateZ(-300px) rotateY(-45deg)', 'opacity' : 0, 'visibility' : 'hidden' }; break; case 'left': return { '-webkit-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-moz-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-o-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', '-ms-transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', 'transform' : 'translateX(-350px) translateZ(-200px) rotateY(45deg)', 'opacity' : 1, 'visibility' : 'visible' }; break; case 'right': return { '-webkit-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-moz-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-o-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', '-ms-transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', 'transform' : 'translateX(350px) translateZ(-200px) rotateY(-45deg)', 'opacity' : 1, 'visibility' : 'visible' }; break; case 'center': return { '-webkit-transform' : 'translateX(0px) translateZ(0px) rotateY(0deg)', '-moz-transform' : 'translateX(0px) translateZ(0px) rotateY(0deg)', '-o-transform' : 'translateX(0px) translateZ(0px) rotateY(0deg)', '-ms-transform' : 'translateX(0px) translateZ(0px) rotateY(0deg)', 'transform' : 'translateX(0px) translateZ(0px) rotateY(0deg)', 'opacity' : 1, 'visibility' : 'visible' }; break; }; } else if( this.support2d && this.supportTrans ) { switch( position ) { case 'outleft': return { '-webkit-transform' : 'translate(-450px) scale(0.7)', '-moz-transform' : 'translate(-450px) scale(0.7)', '-o-transform' : 'translate(-450px) scale(0.7)', '-ms-transform' : 'translate(-450px) scale(0.7)', 'transform' : 'translate(-450px) scale(0.7)', 'opacity' : 0, 'visibility' : 'hidden' }; break; case 'outright': return { '-webkit-transform' : 'translate(450px) scale(0.7)', '-moz-transform' : 'translate(450px) scale(0.7)', '-o-transform' : 'translate(450px) scale(0.7)', '-ms-transform' : 'translate(450px) scale(0.7)', 'transform' : 'translate(450px) scale(0.7)', 'opacity' : 0, 'visibility' : 'hidden' }; break; case 'left': return { '-webkit-transform' : 'translate(-350px) scale(0.8)', '-moz-transform' : 'translate(-350px) scale(0.8)', '-o-transform' : 'translate(-350px) scale(0.8)', '-ms-transform' : 'translate(-350px) scale(0.8)', 'transform' : 'translate(-350px) scale(0.8)', 'opacity' : 1, 'visibility' : 'visible' }; break; case 'right': return { '-webkit-transform' : 'translate(350px) scale(0.8)', '-moz-transform' : 'translate(350px) scale(0.8)', '-o-transform' : 'translate(350px) scale(0.8)', '-ms-transform' : 'translate(350px) scale(0.8)', 'transform' : 'translate(350px) scale(0.8)', 'opacity' : 1, 'visibility' : 'visible' }; break; case 'center': return { '-webkit-transform' : 'translate(0px) scale(1)', '-moz-transform' : 'translate(0px) scale(1)', '-o-transform' : 'translate(0px) scale(1)', '-ms-transform' : 'translate(0px) scale(1)', 'transform' : 'translate(0px) scale(1)', 'opacity' : 1, 'visibility' : 'visible' }; break; }; } else { switch( position ) { case 'outleft' : case 'outright' : case 'left' : case 'right' : return { 'opacity' : 0, 'visibility' : 'hidden' }; break; case 'center' : return { 'opacity' : 1, 'visibility' : 'visible' }; break; }; } }, _navigate : function( dir ) { if( this.supportTrans && this.isAnim ) return false; this.isAnim = true; switch( dir ) { case 'next' : this.current = this.$rightItm.index(); // current item moves left this.$currentItm.addClass('dg-transition').css( this._getCoordinates('left') ); // right item moves to the center this.$rightItm.addClass('dg-transition').css( this._getCoordinates('center') ); // next item moves to the right if( this.$nextItm ) { // left item moves out this.$leftItm.addClass('dg-transition').css( this._getCoordinates('outleft') ); this.$nextItm.addClass('dg-transition').css( this._getCoordinates('right') ); } else { // left item moves right this.$leftItm.addClass('dg-transition').css( this._getCoordinates('right') ); } break; case 'prev' : this.current = this.$leftItm.index(); // current item moves right this.$currentItm.addClass('dg-transition').css( this._getCoordinates('right') ); // left item moves to the center this.$leftItm.addClass('dg-transition').css( this._getCoordinates('center') ); // prev item moves to the left if( this.$prevItm ) { // right item moves out this.$rightItm.addClass('dg-transition').css( this._getCoordinates('outright') ); this.$prevItm.addClass('dg-transition').css( this._getCoordinates('left') ); } else { // right item moves left this.$rightItm.addClass('dg-transition').css( this._getCoordinates('left') ); } break; }; this._setItems(); if( !this.supportTrans ) this.$currentItm.addClass('dg-center'); }, _startSlideshow : function() { var _self = this; this.slideshow = setTimeout( function() { _self._navigate( 'next' ); if( _self.options.autoplay ) { _self._startSlideshow(); } }, this.options.interval ); }, destroy : function() { this.$navPrev.off('.gallery'); this.$navNext.off('.gallery'); this.$wrapper.off('.gallery'); } }; var logError = function( message ) { if ( this.console ) { console.error( message ); } }; $.fn.gallery = function( options ) { if ( typeof options === 'string' ) { var args = Array.prototype.slice.call( arguments, 1 ); this.each(function() { var instance = $.data( this, 'gallery' ); if ( !instance ) { logError( "cannot call methods on gallery prior to initialization; " + "attempted to call method '" + options + "'" ); return; } if ( !$.isFunction( instance[options] ) || options.charAt(0) === "_" ) { logError( "no such method '" + options + "' for gallery instance" ); return; } instance[ options ].apply( instance, args ); }); } else { this.each(function() { var instance = $.data( this, 'gallery' ); if ( !instance ) { $.data( this, 'gallery', new $.Gallery( options, this ) ); } }); } return this; };})( jQuery );

希望本文所述对大家学习javascript程序设计有所帮助。