這又是一款很不錯的jQuery焦點圖動畫,它的特點是整個焦點圖基本上是全螢幕顯示的,非常大氣,而且圖片的傾斜也給整個焦點圖3D立體的視覺效果,而且焦點圖的圖片切換非常流暢,相當實用。
HTML程式碼:
<div class="wrapper"> </div> <div id="pxs_container" class="pxs_container"> <div class="pxs_bg"> <div class="pxs_bg1"></div> <div class="pxs_bg2"></div> <div class="pxs_bg3"></div> </div> <div class="pxs_loading">Loading images...</div> <div class="pxs_slider_wrapper"> <ul class="pxs_slider"> <li><img src="images/1.jpg" alt="First Image" /></li> <li><img src="images/2.jpg" alt="Second Image" /></li> <li><img src="images/3.jpg" alt="Third Image" /></li> <li><img src="images/4.jpg" alt="Forth Image" /></li> <li><img src="images/5.jpg" alt="Fifth Image" /></li> <li><img src="images/6.jpg" alt="Sixth Image" /></li> </ul> <div class="pxs_navigation"> <span class="pxs_next"></span> <span class="pxs_prev"></span> </div> <ul class="pxs_thumbnails"> <li><img src="images/thumbs/1.jpg" alt="First Image" /></li> <li><img src="images/thumbs/2.jpg" alt="Second Image" /></li> <li><img src="images/thumbs/3.jpg" alt="Third Image" /></li> <li><img src="images/thumbs/4.jpg" alt="Forth Image" /></li> <li><img src="images/thumbs/5.jpg" alt="Fifth Image" /></li> <li><img src="images/thumbs/6.jpg" alt="Sixth Image" /></li> </ul> </div> </div>
JavaScript程式碼
(function($) { $.fn.parallaxSlider = function(options) { var opts = $.extend({}, $.fn.parallaxSlider.defaults, options); return this.each(function() { var $pxs_container = $(this), o = $.meta ? $.extend({}, opts, $pxs_container.data()) : opts; //the main slider var $pxs_slider = $('.pxs_slider',$pxs_container), //the elements in the slider $elems = $pxs_slider.children(), //total number of elements total_elems = $elems.length, //the navigation buttons $pxs_next = $('.pxs_next',$pxs_container), $pxs_prev = $('.pxs_prev',$pxs_container), //the bg images $pxs_bg1 = $('.pxs_bg1',$pxs_container), $pxs_bg2 = $('.pxs_bg2',$pxs_container), $pxs_bg3 = $('.pxs_bg3',$pxs_container), //current image current = 0, //the thumbs container $pxs_thumbnails = $('.pxs_thumbnails',$pxs_container), //the thumbs $thumbs = $pxs_thumbnails.children(), //the interval for the autoplay mode slideshow, //the loading image $pxs_loading = $('.pxs_loading',$pxs_container), $pxs_slider_wrapper = $('.pxs_slider_wrapper',$pxs_container); //first preload all the images var loaded = 0, $images = $pxs_slider_wrapper.find('img'); $images.each(function(){ var $img = $(this); $('<img/>').load(function(){ ++loaded; if(loaded == total_elems*2){ $pxs_loading.hide(); $pxs_slider_wrapper.show(); //one images width (assuming all images have the same sizes) var one_image_w = $pxs_slider.find('img:first').width(); /* need to set width of the slider, of each one of its elements, and of the navigation buttons */ setWidths($pxs_slider, $elems, total_elems, $pxs_bg1, $pxs_bg2, $pxs_bg3, one_image_w, $pxs_next, $pxs_prev); /* set the width of the thumbs and spread them evenly */ $pxs_thumbnails.css({ 'width' : one_image_w + 'px', 'margin-left' : -one_image_w/2 + 'px' }); var spaces = one_image_w/(total_elems+1); $thumbs.each(function(i){ var $this = $(this); var left = spaces*(i+1) - $this.width()/2; $this.css('left',left+'px'); if(o.thumbRotation){ var angle = Math.floor(Math.random()*41)-20; $this.css({ '-moz-transform' : 'rotate('+ angle +'deg)', '-webkit-transform' : 'rotate('+ angle +'deg)', 'transform' : 'rotate('+ angle +'deg)' }); } //hovering the thumbs animates them up and down $this.bind('mouseenter',function(){ $(this).stop().animate({top:'-10px'},100); }).bind('mouseleave',function(){ $(this).stop().animate({top:'0px'},100); }); }); //make the first thumb be selected highlight($thumbs.eq(0)); //slide when clicking the navigation buttons $pxs_next.bind('click',function(){ ++current; if(current >= total_elems) if(o.circular) current = 0; else{ --current; return false; } highlight($thumbs.eq(current)); slide(current, $pxs_slider, $pxs_bg3, $pxs_bg2, $pxs_bg1, o.speed, o.easing, o.easingBg); }); $pxs_prev.bind('click',function(){ --current; if(current < 0) if(o.circular) current = total_elems - 1; else{ ++current; return false; } highlight($thumbs.eq(current)); slide(current, $pxs_slider, $pxs_bg3, $pxs_bg2, $pxs_bg1, o.speed, o.easing, o.easingBg); }); /* clicking a thumb will slide to the respective image */ $thumbs.bind('click',function(){ var $thumb = $(this); highlight($thumb); //if autoplay interrupt when user clicks if(o.auto) clearInterval(slideshow); current = $thumb.index(); slide(current, $pxs_slider, $pxs_bg3, $pxs_bg2, $pxs_bg1, o.speed, o.easing, o.easingBg); }); /* activate the autoplay mode if that option was specified */ if(o.auto != 0){ o.circular = true; slideshow = setInterval(function(){ $pxs_next.trigger('click'); },o.auto); } /* when resizing the window, we need to recalculate the widths of the slider elements, based on the new windows width. we need to slide again to the current one, since the left of the slider is no longer correct */ $(window).resize(function(){ w_w = $(window).width(); setWidths($pxs_slider,$elems,total_elems,$pxs_bg1,$pxs_bg2,$pxs_bg3,one_image_w,$pxs_next,$pxs_prev); slide(current, $pxs_slider, $pxs_bg3, $pxs_bg2, $pxs_bg1, 1, o.easing, o.easingBg); }); } }).error(function(){ alert('here') }).attr('src',$img.attr('src')); }); }); }; //the current windows width var w_w = $(window).width(); var slide = function(current, $pxs_slider, $pxs_bg3, $pxs_bg2, $pxs_bg1, speed, easing, easingBg){ var slide_to = parseInt(-w_w * current); $pxs_slider.stop().animate({ left : slide_to + 'px' },speed, easing); $pxs_bg3.stop().animate({ left : slide_to/2 + 'px' },speed, easingBg); $pxs_bg2.stop().animate({ left : slide_to/4 + 'px' },speed, easingBg); $pxs_bg1.stop().animate({ left : slide_to/8 + 'px' },speed, easingBg); } var highlight = function($elem){ $elem.siblings().removeClass('selected'); $elem.addClass('selected'); } var setWidths = function($pxs_slider, $elems, total_elems, $pxs_bg1, $pxs_bg2, $pxs_bg3, one_image_w, $pxs_next, $pxs_prev){ /* the width of the slider is the windows width times the total number of elements in the slider */ var pxs_slider_w = w_w * total_elems; $pxs_slider.width(pxs_slider_w + 'px'); //each element will have a width = windows width $elems.width(w_w + 'px'); /* we also set the width of each bg image div. The value is the same calculated for the pxs_slider */ $pxs_bg1.width(pxs_slider_w + 'px'); $pxs_bg2.width(pxs_slider_w + 'px'); $pxs_bg3.width(pxs_slider_w + 'px'); /* both the right and left of the navigation next and previous buttons will be: windowWidth/2 - imgWidth/2 + some margin (not to touch the image borders) */ var position_nav = w_w/2 - one_image_w/2 + 3; $pxs_next.css('right', position_nav + 'px'); $pxs_prev.css('left', position_nav + 'px'); } $.fn.parallaxSlider.defaults = { auto : 0, //how many seconds to periodically slide the content. //If set to 0 then autoplay is turned off. speed : 1000,//speed of each slide animation easing : 'jswing',//easing effect for the slide animation easingBg : 'jswing',//easing effect for the background animation circular : true,//circular slider thumbRotation : true//the thumbs will be randomly rotated }; //easeInOutExpo,easeInBack })(jQuery);
呼叫插件的JavaScript程式碼
$(function() { var $pxs_container = $('#pxs_container'); $pxs_container.parallaxSlider(); });
以上就是本文的全部內容,希望對大家學習jquery程式設計有所幫助。