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
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。