
HTML代码
<div class="parallax-bg" id="slider-wrap"> <div class="slider parallax-bg" id="slider"> <div class="slider-sections sandbox"><section class="first"><img alt="Kendo UI" src="images/home-banner-1.png"/><div class="text"> <h2>SmartSite Ver 2.2<br />智能网站管理系统 </h2> <p class="copy">采用前后台完全分离技术,通过标签(支持标签循环嵌套、判断标签、自定义标签、文件循环嵌套等)加模板技术.全站生成纯静态页。</p> <p class="button"><a href="#" onclick="_gaq.push(["_trackPageview", "#"]);">Download</a> <a class="dimmed" onclick="_gaq.push(["_trackPageview", "#"]);" href="#">Learn More</a></p></div></section> <section><img src="images/dataviz-home-image-q2.png" alt="Kendo UI" /><div class="text" style="padding-top: 10px;"> <h2>企业网站管理系统</h2> <p class="copy">单页面、单页面索引、新闻、产品展示、下载、友情链接、网上商城,在线支付、配送、支付方式管理、广告等模块。</p> <p class="button"><a href="#" onclick="_gaq.push(["_trackPageview", "#"]);">Download</a> <a class="dimmed" onclick="_gaq.push(["_trackPageview", "#"]);" href="#">Learn More</a></p></div></section> <section><img src="images/home_banner_web-q2.png" alt="Kendo UI" /><div class="text"> <h2>智能移动网站管理系统</h2> <p class="copy">基于jquery.Mobile、HTML5技术框架,前后台完全分离,采用标签加模板技术,全站生成纯静态页。</p> <p class="button"><a href="#" onclick="_gaq.push(["_trackPageview", "#"]);">Download</a> <a class="dimmed" onclick="_gaq.push(["_trackPageview", "#"]);" href="#">Learn More</a></p></div></section> </div></div><a class="slider-prev" href="javascript: void(0)">?</a> <a class="slider-next" href="javascript: void(0)">?</a></div>CSS代码:
.slider section {display: none;}.slider section.first {display: block;}.slider-sections, .slider-sections section {width: 861px; height: 335px;}.slider-sections {margin: 0 auto; position: relative;}.slider-sections section {position: absolute; top: 0; left: 0px; }.header-content h2 { font:400 32px/1.2 "microsoft yahei", Tahoma, arial, sans-serif; color: #fff; margin: 0 0 26px;}.header-content p { margin: 0 0 30px;}.header-content .centered-content{ padding-top: 30px; padding-bottom: 10px;}.button { float: left; width: auto !important; list-style: none;} .button a, .button button, .button input { /* Standard black button */ font-size: 15px; /*font-family: "lucida sans",arial,helvetica,sans-serif;*/ line-height: 18px; color: #fff !important; text-decoration: none; padding: 5px 14px 6px 13px; display: block; width: auto; position: relative; z-index: 2;border: none;-moz-border-radius: 3px; border-radius: 3px; cursor: pointer; background: #313131; /* Old browsers */ background: -moz-linear-gradient(top, #313131 0%, #222222 100%); /* FF3.6+ */ background: -webkit-linear-gradient(top, #313131 0%,#222222 100%); /* Chrome10+,Safari5.1+ */ background: -o-linear-gradient(top, #313131 0%,#222222 100%); /* Opera11.10+ */ background: -ms-linear-gradient(top, #313131 0%,#222222 100%); /* IE10+ */ background: linear-gradient(top, #313131 0%,#222222 100%); /* W3C */ -webkit-transition: all 0.3s ease; -moz-transition: all 0.3s ease; -o-transition: all 0.3s ease; transition: all 0.3s ease; } .button a:hover, .button input:hover, .button button:hover, .button a:focus, .button input:focus, .button button:focus { background: #464646; /* Old browsers */ background: -moz-linear-gradient(top, #464646 0%, #393939 100%); /* FF3.6+ */ background: -webkit-linear-gradient(top, #464646 0%,#393939 100%); /* Chrome10+,Safari5.1+ */ background: -o-linear-gradient(top, #464646 0%,#393939 100%); /* Opera11.10+ */ background: -ms-linear-gradient(top, #464646 0%,#393939 100%); /* IE10+ */ background: linear-gradient(top, #464646 0%,#393939 100%); /* W3C */ } header .header-content .button a, #content .button a:hover {text-decoration: none; }.header-content .beta-ribbons { position: absolute;height: 120px; width: 85px; text-indent: -200px; overflow: hidden; background: url(../images/kendo-ribbons.png) no-repeat 0 0;}.header-content .beta-ribbons.ribbon-1 { background-position: -170px 0; top: -3px; right: -145px;}.header-content p.copy .beta-ribbons.ribbon-1 { top: -135px; left: 900px;}.header-content .beta-ribbons.ribbon-4 { background-position: -255px 0; left: -62px; top: -30px; z-index: 10; text-indent: -2000px;}JavaScript代码:/*** @author Alexander Farkas* v. 1.22*/(function ($){ if (!document.defaultView || !document.defaultView.getComputedStyle) { // IE6-IE8var oldCurCSS = $.curCSS;$.curCSS = function (elem, name, force){ if (name === "background-position") {name = "backgroundPosition"; } if (name !== "backgroundPosition" || !elem.currentStyle || elem.currentStyle[name]) {return oldCurCSS.apply(this, arguments); } var style = elem.style; if (!force && style && style[name]) {return style[name]; } return oldCurCSS(elem, "backgroundPositionX", force) + " " + oldCurCSS(elem, "backgroundPositionY", force);}; } var oldAnim = $.fn.animate; $.fn.animate = function (prop) {if ("background-position" in prop){ prop.backgroundPosition = prop["background-position"]; delete prop["background-position"];}if ("backgroundPosition" in prop){ prop.backgroundPosition = "(" + prop.backgroundPosition;}return oldAnim.apply(this, arguments); }; function toArray(strg) {strg = strg.replace(/left|top/g, "0px");strg = strg.replace(/right|bottom/g, "100%");strg = strg.replace(/([0-9.]+)(s|)|$)/g, "$1px$2");var res = strg.match(/(-?[0-9.]+)(px|\%|em|pt)s(-?[0-9.]+)(px|\%|em|pt)/);return [parseFloat(res[1], 10), res[2], parseFloat(res[3], 10), res[3]]; } $.fx.step.backgroundPosition = function (fx) {if (!fx.bgPosReady){ var start = $.curCSS(fx.elem, "backgroundPosition"); if (!start) {//FF2 no inline-style fallbackstart = "0px 0px"; } start = toArray(start); fx.start = [start[0], start[2]]; var end = toArray(fx.end); fx.end = [end[0], end[2]]; fx.unit = [end[1], end[3]]; fx.bgPosReady = true;}//return;var nowPosX = [];nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];fx.elem.style.backgroundPosition = nowPosX[0] + " " + nowPosX[1]; };})(jQuery);/*tlrkSlider example usage: $("#slider").tlrkSlider({autoStart: false,elements: {"img": {delay: 10},"h2": {delay: 500},".copy": {delay: 800},".button": {delay: 1000}} }); to go to a specific frame: $("#slider").tlrkSlider("go", position); "position" can have one of the following values: "next", "prev", "first", "last", "+1", "-1" or a numeric value to start/stop the automatic loop: $("#slider").tlrkSlider("start"); $("#slider").tlrkSlider("stop"); to change the delay between automatic transitions: $("#slider").tlrkSlider("option", "delayAnimation", 1000); to change any option: $("#slider").tlrkSlider("option", option_name, option_value); Changing the "elements" object is not tested. Changing the following options: "navigation", "navigationClass", "framesSelector", "autoStart" won"t have any effect for now. They are used only during the initialization. $("#slider").data("tlrkSlider") will return the plugin instance and the methods/properties can be accessed from there. The plugin contructor defaults are accessable through TlrkSlider.defaults The function that actually sweep the elements in/out can be overriden from TlrkSlider.prototype._animationIn and TlrkSlider.prototype._animationOut See sweepIn/sweepOut*/;(function( $, window, document, undefined ){ // utility function that generates the "dots" navigation function generateNavigation($el, count, config) { var i, html = "",width = count * 24; html += "<ol class="" + config.navigationClass + "" style="margin-left: -" + width/2 + "px; width: " + width + "px">"; for (i = 0; i < count; i++) {html += "<li><a " + (i === 0 ? "class="selected"" : "" ) + " href="#" + (i) + "">slide</a></li>"; } html += "</ol>"; $el.append(html); } function sweepOut($el, windowWidth) { var dfr = $.Deferred(),pos = $el.position(),width = $el.width(),delta, final,options = $el.data("tlrkAnimOptions"); windowWidth = windowWidth || $(window).width(); // check if the windowWidth is passed, if not - get it delta = windowWidth - pos.left; final = -(delta); setTimeout(function(){$el.animate({left: final, opacity: "toggle"}, options.speed, options.easing, function(){dfr.resolve();}); }, options.delay); return dfr.promise(); } function sweepIn($el, windowWidth, frameLeft) { var dfr = $.Deferred(),options = $el.data("tlrkAnimOptions"),positionData = $el.data("tlrkOriginalPos"),final = positionData.position.left,rightEdge; windowWidth = windowWidth || $(window).width(); // check if the windowWidth is passed, if not - get it $el.css({opacity: 0, display: "block"}); // move it outside the right edge of the screen $el.css("left", function(current){return current + windowWidth - frameLeft; }); setTimeout(function(){$el.animate({left: final, opacity: 1}, options.speed, options.easing, function(){dfr.resolve();}); }, options.delay); return dfr.promise(); } // two pass function that first iterates all the elements and gets their position/width/height // and then sets their position to absolute function absolutize($elements) { // todo - move it to separate function and do it just once // gather the original position/dimension data for all elements $elements.each(function(){var $t = $(this);if ($t.data("tlrkOriginalPos")) return$t.data("tlrkOriginalPos", {position: $t.position(),width: $t.width(),height: $t.height(),css_pos: $t.css("position"),css_left: $t.css("left"),css_top: $t.css("top"),css_width: $t.css("width") || "auto",css_height: $t.css("height") || "auto"}); }); // set the absolute position $elements.each(function(){var $t = $(this), opos = $t.data("tlrkOriginalPos");$t.css({position: "absolute",left: opos.position.left,top: opos.position.top,width: opos.width,height: opos.height}); }); } function restoreFrameElements($elements) { $elements.each(function(){var $t = $(this), opos = $t.data("tlrkOriginalPos");if (!opos) return$t.css({position: opos.css_pos,left: opos.css_left,top: opos.css_top,width: opos.css_width,height: opos.css_height}); }); } var TlrkSlider = function( elem, options ){this.elem = elem;this.$elem = $(elem);this.options = options; }; // the plugin prototype TlrkSlider.prototype = { defaults: {defaultElementOptions: {speed: 1200,easing: "easeInOutBack",// interval before the element starts moving when the fadeIn/Out functions are called// it"s a good idea to give different delays for the different elements// if all have the same delay they"ll start moving all togetherdelay: 100 },// dispose elements are these that are not included in the elements object// but affect the document flow and will be fadedIn/OutdisposeDelay: 100, // delay for the dispose elementsdisposeSpeed: 1000, // how quickly they"ll fadeOut/IndelayBetweenTransition: 1000, // time between starting fadeOut and fadeIndelayAnimation: 7000, // time between auto changing the current frameloop: true, // if true when clicking next on the last frame the slider jumps to the first oneautoStart: true, // start the automatic looping through the frames on initframesSelector: "section", // selector for the frames inside the sliderelements: {"p": {delay: 100, speed: 1000, easing: "easeInOutBack"}},navigation: true, // the dots navigation on the bottomnavigationClass: "slider-nav",// callbacks// another way to "catch" these events is with// $(-slider-element-).bind("animationStart")animationStart: null,animationEnd: null }, init: function() {var c, e, element, $element, that = this, $firstFrame;c = this.config = $.extend({}, this.defaults, this.options);this.elem.style.position = "relative"; // make the wrapping element relative// basicsthis.$frames = this.$elem.find(c.framesSelector);this.framesCount = this.$frames.length;this.currentFrame = 0;this.queue = [];this._$elementsByFrame = {};this._$disposeElementsByFrame = {};for (i = 0; i < this.framesCount; i++) {this._$elementsByFrame[i] = this._getFrameElements(i); // cache the $elements by framethis._$disposeElementsByFrame[i] = this._getDisposeFrameElements(i); // cache the rest of the tree for each frame}if (c.navigation) {generateNavigation(this.$elem, this.framesCount, c);this.$navigation = this.$elem.find("."+c.navigationClass);}// bindingsthis.$elem.find(".slider-nav").delegate("a", "click", function(e){var frame = this.getAttribute("href").split("#")[1];that.go.call(that, frame);return false;});this.$elem // internal bindings for the callbacks.bind("animationStart", function(){ if ($.isFunction(c.animationStart)) {c.animationStart.apply(that, arguments);}}).bind("animationEnd", function(){ if ($.isFunction(c.animationEnd)) {c.animationEnd.apply(that, arguments);}});// start animation?if (c.autoStart) {this.start();} else {this.running = false;}return this; }, start: function(instant) {var that = this;if (this.timer) { // we"ll clear the current timerwindow.clearTimeout(this.timer);}this.running = true;if (instant) {that.nextFrame();} else {this.timer = window.setTimeout(function(){ that.nextFrame.call(that) }, that.config.delayAnimation);} }, stop: function() {if (!this.running) return; // we are not runningthis.running = false;window.clearTimeout(this.timer); }, // main function for changing frames selectFrame: function(frame, dfr) {var c = this.config, // shorthand for the config that = this, dfr = dfr || $.Deferred(), dFadeIn = $.Deferred(), dFadeOut = $.Deferred();if (isNaN(frame) || frame < 0 || frame > this.framesCount || frame === this.currentFrame) {dfr.reject();return dfr.promise();}// clear the animation loop interval if the animation is runningif (this.running && this.timer) { window.clearTimeout(this.timer);}// check if we are currenly running an animation.if (this.animated && this.queue.length > 0) {// wait for the last item in the queue to finishthis.queue[this.queue.length-1].done(function(){ that.selectFrame(frame, dfr); // and call again the selectFrame})return dfr.promise();}this.animated = true;this.$elem.trigger("animationStart", [this, frame]);this.queue.push(dfr);// fade the framesdFadeOut = this._fadeOutFrame(this.currentFrame);// hide the fadetout framedFadeOut.done(function(){that.$frames.eq(that.currentFrame).hide();});window.setTimeout(function(){ // then wait delayBetweenTransition and fadeIn the new framedFadeIn = that._fadeInFrame.call(that, frame).done(function(){ // when both the fadeIn and fadeOut are done we"ll resolve the selectFrame promise $.when(dFadeOut, dFadeIn).done(function(){ that.animated = false; that.queue.shift(); that.$elem.trigger("animationEnd", [that]); that.currentFrame = frame; dfr.resolve(); });});}, c.delayBetweenTransition);// navigation html changeif (this.config.navigation) {this.$navigation.find(".selected").removeClass("selected").end() .find("a").eq(frame).addClass("selected");}dfr.done(function(){ // we"ll resume the loop animation after the transitions are doneif (that.running) { that.start();}});return dfr.promise(); }, _fadeFrame: function(frame, callback, direction) {var dfr = $.Deferred(), $frame = this.$frames.eq(frame), $elements = this._$elementsByFrame[frame], windowWidth = $(window).width(), // cache it before the animations, so we don"t have to check it for each elementi, len, that = this, elementAnimations = [], $disposeElements = this._$disposeElementsByFrame[frame], $affectedElements, frameLeft = $frame.offset().left;direction = direction || "out";if (!$.isFunction(callback)) return; // do nothing if there"s no callback passed$affectedElements = $elements.add($disposeElements);// position absolute the animation and dispose elementsabsolutize($affectedElements);// toggle the dispose elementsif ($disposeElements.length > 0) {window.setTimeout(function(){ $disposeElements[direction === "out" ? "fadeOut" : "fadeIn"](that.config.disposeSpeed);}, this.config.disposeDelay);}// invoke the callback for each element// the callback must return a promise$elements.each(function(){elementAnimations.push( callback.call(that, $(this), windowWidth, frameLeft) );});// wait for all the elements to finish their animation$.when.apply(this, elementAnimations).done(function(){//restoreFrameElements($affectedElements); // and restore the elements" positiondfr.resolve(); // resolve the fade function});return dfr.promise(); }, _fadeOutFrame: function(frame) {var dfr = $.Deferred(), $frame = this.$frames.eq(frame), $disposeElements = this._$disposeElementsByFrame[frame];this._fadeFrame(frame, this._animationOut, "out").done(function(){dfr.resolve();})return dfr.promise(); }, _fadeInFrame: function(frame) {var dfr = $.Deferred(), $frame = this.$frames.eq(frame), $elements = this._$elementsByFrame[frame];this._restoreFrame(frame);$frame.show();this._fadeFrame(frame, this._animationIn, "in").done(function(){dfr.resolve();});return dfr.promise(); }, _restoreFrame: function(frame){if (!frame) returnrestoreFrameElements( this._$elementsByFrame[frame].add(this._$disposeElementsByFrame[frame]) ); }, nextFrame: function() {var frame = this.currentFrame+1, dfr = $.Deferred();if (frame > this.framesCount-1) {if (this.config.loop) { frame = 0;} else { dfr.reject();}};this.selectFrame(frame).done(function(){dfr.resolve();});return dfr.promise(); }, prevFrame: function() {var frame = this.currentFrame-1, dfr = $.Deferred();if (frame < 0) {if (this.config.loop) { frame = this.framesCount-1;} else { dfr.reject(); return dfr.promise();}}this.selectFrame(frame).done(function(){dfr.resolve();});return dfr.promise(); }, go: function(str) { // shorthandswitch (str) {case "next":case "+1": this.nextFrame(); break;case "prev":case "-1": this.prevFrame(); break;case "first": this.selectFrame(0); break;case "last": this.selectFrame(this.framesCount-1); break;default: if (isNaN(str)) return; this.selectFrame(Number(str));} }, // returns jquery collection of animation elements _getFrameElements: function(frame) { var $frame = this.$frames.eq(frame), elements = this.config.elements, e, elementOptions, $found, $frameElements = $([]);for (e in elements) {elementOptions = elements[e];$found = $frame.find(e);$found.addClass("t-frame-element").data("tlrkAnimOptions", $.extend({}, this.defaults.defaultElementOptions, elementOptions ));$frameElements = $frameElements.add($found);}return $frameElements; }, // returns jquery collection of elements that have to be faded out // i.e. elements on the same level as the animation elements // that doesn"t contain other animation elements _getDisposeFrameElements: function(frame) {var $disposeElements = $([]), $frame = this.$frames.eq(frame), $elements = this._$elementsByFrame[frame];$elements.each(function(){var $t = $(this), $siblings = $t.siblings().not(".t-frame-element");$siblings.each(function(){ var $t = $(this); // check if the node is not already marked and doesn"t contains other frame elements if (!$t.hasClass("t-frame-dispose") && $t.find(".t-frame-element").length === 0) { $t.addClass("t-frame-dispose"); $disposeElements = $disposeElements.add($t); }});});return $disposeElements; }, // expose the internal animationIn/Out functions that are called for each element in the frame // two arguments are passed - the $element which have to be animated and the window width _animationIn: sweepIn, _animationOut: sweepOut } TlrkSlider.defaults = TlrkSlider.prototype.defaults; $.fn.tlrkSlider = function(options) { var otherArgs = Array.prototype.slice.call(arguments, 1); return this.each(function() {var $el = $(this), pluginData = $el.data("tlrkSlider");if (!pluginData) { // check if the slider is already attachedpluginData = new TlrkSlider(this, options).init();$el.data("tlrkSlider", pluginData);return;}//change the options or call a methodif (typeof options === "string") {// setting / getting option(s)if (options === "option") { if (typeof otherArgs[0] === "string" && typeof otherArgs[1] !== "undefined") { // set an option value pluginData.config[otherArgs[0]] = otherArgs[1];} if (typeof otherArgs[0] === "object") { // extend the config with new options pluginData.config = $.extend(pluginData.config, otherArgs[0]); }} else { // call a method? try { pluginData[options].apply(pluginData, otherArgs); } catch(ex) { throw "Error calling a plugin method (" + ex + ")"; }}} }); }; window.TlrkSlider = TlrkSlider;})( jQuery, window , document );下面是页面调用的JS代码:$(document).ready(function(){ var $backgrounds = $(".header-content").find(".parallax-bg"),LAYER_OFFSET = 30,PRLX_SPEED = 1500,$slider; $slider = $("#slider").tlrkSlider({ autoStart: true, animationStart: function(ev, slider, step){var max_steps = this.framesCount; $backgrounds.each(function(idx, el){var pos = (step * (100 / max_steps)) + (LAYER_OFFSET * idx);$(this).animate({"backgroundPosition": pos + "% 0"}, PRLX_SPEED);}); }, elements: {"img": {delay: 10},"h2": {delay: 500},".copy": {delay: 800},".button": {delay: 1000} } }); $(".header-content") .hover(function(){$(this).find(".slider-prev, .slider-next").show();},function(){$(this).find(".slider-prev, .slider-next").hide();} ) .find(".slider-prev").click(function(){$slider.tlrkSlider("go", "prev"); return false; }).end() .find(".slider-next").click(function(){$slider.tlrkSlider("go", "next"); return false; });});希望本文对大家学习javascript程序设计有所帮助。