1 | /* |
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2 | * jQuery FlexSlider v2.5.0 |
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3 | * Copyright 2012 WooThemes |
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4 | * Contributing Author: Tyler Smith |
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5 | */!function($){$.flexslider=function(e,t){var a=$(e);a.vars=$.extend({},$.flexslider.defaults,t);var n=a.vars.namespace,i=window.navigator&&window.navigator.msPointerEnabled&&window.MSGesture,s=("ontouchstart"in window||i||window.DocumentTouch&&document instanceof DocumentTouch)&&a.vars.touch,r="click touchend MSPointerUp keyup",o="",l,c="vertical"===a.vars.direction,d=a.vars.reverse,u=a.vars.itemWidth>0,v="fade"===a.vars.animation,p=""!==a.vars.asNavFor,m={},f=!0;$.data(e,"flexslider",a),m={init:function(){a.animating=!1,a.currentSlide=parseInt(a.vars.startAt?a.vars.startAt:0,10),isNaN(a.currentSlide)&&(a.currentSlide=0),a.animatingTo=a.currentSlide,a.atEnd=0===a.currentSlide||a.currentSlide===a.last,a.containerSelector=a.vars.selector.substr(0,a.vars.selector.search(" ")),a.slides=$(a.vars.selector,a),a.container=$(a.containerSelector,a),a.count=a.slides.length,a.syncExists=$(a.vars.sync).length>0,"slide"===a.vars.animation&&(a.vars.animation="swing"),a.prop=c?"top":"marginLeft",a.args={},a.manualPause=!1,a.stopped=!1,a.started=!1,a.startTimeout=null,a.transitions=!a.vars.video&&!v&&a.vars.useCSS&&function(){var e=document.createElement("div"),t=["perspectiveProperty","WebkitPerspective","MozPerspective","OPerspective","msPerspective"];for(var n in t)if(void 0!==e.style[t[n]])return a.pfx=t[n].replace("Perspective","").toLowerCase(),a.prop="-"+a.pfx+"-transform",!0;return!1}(),a.ensureAnimationEnd="",""!==a.vars.controlsContainer&&(a.controlsContainer=$(a.vars.controlsContainer).length>0&&$(a.vars.controlsContainer)),""!==a.vars.manualControls&&(a.manualControls=$(a.vars.manualControls).length>0&&$(a.vars.manualControls)),""!==a.vars.customDirectionNav&&(a.customDirectionNav=2===$(a.vars.customDirectionNav).length&&$(a.vars.customDirectionNav)),a.vars.randomize&&(a.slides.sort(function(){return Math.round(Math.random())-.5}),a.container.empty().append(a.slides)),a.doMath(),a.setup("init"),a.vars.controlNav&&m.controlNav.setup(),a.vars.directionNav&&m.directionNav.setup(),a.vars.keyboard&&(1===$(a.containerSelector).length||a.vars.multipleKeyboard)&&$(document).bind("keyup",function(e){var t=e.keyCode;if(!a.animating&&(39===t||37===t)){var n=39===t?a.getTarget("next"):37===t?a.getTarget("prev"):!1;a.flexAnimate(n,a.vars.pauseOnAction)}}),a.vars.mousewheel&&a.bind("mousewheel",function(e,t,n,i){e.preventDefault();var s=a.getTarget(0>t?"next":"prev");a.flexAnimate(s,a.vars.pauseOnAction)}),a.vars.pausePlay&&m.pausePlay.setup(),a.vars.slideshow&&a.vars.pauseInvisible&&m.pauseInvisible.init(),a.vars.slideshow&&(a.vars.pauseOnHover&&a.hover(function(){a.manualPlay||a.manualPause||a.pause()},function(){a.manualPause||a.manualPlay||a.stopped||a.play()}),a.vars.pauseInvisible&&m.pauseInvisible.isHidden()||(a.vars.initDelay>0?a.startTimeout=setTimeout(a.play,a.vars.initDelay):a.play())),p&&m.asNav.setup(),s&&a.vars.touch&&m.touch(),(!v||v&&a.vars.smoothHeight)&&$(window).bind("resize orientationchange focus",m.resize),a.find("img").attr("draggable","false"),setTimeout(function(){a.vars.start(a)},200)},asNav:{setup:function(){a.asNav=!0,a.animatingTo=Math.floor(a.currentSlide/a.move),a.currentItem=a.currentSlide,a.slides.removeClass(n+"active-slide").eq(a.currentItem).addClass(n+"active-slide"),i?(e._slider=a,a.slides.each(function(){var e=this;e._gesture=new MSGesture,e._gesture.target=e,e.addEventListener("MSPointerDown",function(e){e.preventDefault(),e.currentTarget._gesture&&e.currentTarget._gesture.addPointer(e.pointerId)},!1),e.addEventListener("MSGestureTap",function(e){e.preventDefault();var t=$(this),n=t.index();$(a.vars.asNavFor).data("flexslider").animating||t.hasClass("active")||(a.direction=a.currentItem<n?"next":"prev",a.flexAnimate(n,a.vars.pauseOnAction,!1,!0,!0))})})):a.slides.on(r,function(e){e.preventDefault();var t=$(this),i=t.index(),s=t.offset().left-$(a).scrollLeft();0>=s&&t.hasClass(n+"active-slide")?a.flexAnimate(a.getTarget("prev"),!0):$(a.vars.asNavFor).data("flexslider").animating||t.hasClass(n+"active-slide")||(a.direction=a.currentItem<i?"next":"prev",a.flexAnimate(i,a.vars.pauseOnAction,!1,!0,!0))})}},controlNav:{setup:function(){a.manualControls?m.controlNav.setupManual():m.controlNav.setupPaging()},setupPaging:function(){var e="thumbnails"===a.vars.controlNav?"control-thumbs":"control-paging",t=1,i,s;if(a.controlNavScaffold=$('<ol class="'+n+"control-nav "+n+e+'"></ol>'),a.pagingCount>1)for(var l=0;l<a.pagingCount;l++){if(s=a.slides.eq(l),i="thumbnails"===a.vars.controlNav?'<img src="'+s.attr("data-thumb")+'"/>':"<a>"+t+"</a>","thumbnails"===a.vars.controlNav&&!0===a.vars.thumbCaptions){var c=s.attr("data-thumbcaption");""!==c&&void 0!==c&&(i+='<span class="'+n+'caption">'+c+"</span>")}a.controlNavScaffold.append("<li>"+i+"</li>"),t++}a.controlsContainer?$(a.controlsContainer).append(a.controlNavScaffold):a.append(a.controlNavScaffold),m.controlNav.set(),m.controlNav.active(),a.controlNavScaffold.delegate("a, img",r,function(e){if(e.preventDefault(),""===o||o===e.type){var t=$(this),i=a.controlNav.index(t);t.hasClass(n+"active")||(a.direction=i>a.currentSlide?"next":"prev",a.flexAnimate(i,a.vars.pauseOnAction))}""===o&&(o=e.type),m.setToClearWatchedEvent()})},setupManual:function(){a.controlNav=a.manualControls,m.controlNav.active(),a.controlNav.bind(r,function(e){if(e.preventDefault(),""===o||o===e.type){var t=$(this),i=a.controlNav.index(t);t.hasClass(n+"active")||(a.direction=i>a.currentSlide?"next":"prev",a.flexAnimate(i,a.vars.pauseOnAction))}""===o&&(o=e.type),m.setToClearWatchedEvent()})},set:function(){var e="thumbnails"===a.vars.controlNav?"img":"a";a.controlNav=$("."+n+"control-nav li "+e,a.controlsContainer?a.controlsContainer:a)},active:function(){a.controlNav.removeClass(n+"active").eq(a.animatingTo).addClass(n+"active")},update:function(e,t){a.pagingCount>1&&"add"===e?a.controlNavScaffold.append($("<li><a>"+a.count+"</a></li>")):1===a.pagingCount?a.controlNavScaffold.find("li").remove():a.controlNav.eq(t).closest("li").remove(),m.controlNav.set(),a.pagingCount>1&&a.pagingCount!==a.controlNav.length?a.update(t,e):m.controlNav.active()}},directionNav:{setup:function(){var e=$('<ul class="'+n+'direction-nav"><li class="'+n+'nav-prev"><a class="'+n+'prev" href="#">'+a.vars.prevText+'</a></li><li class="'+n+'nav-next"><a class="'+n+'next" href="#">'+a.vars.nextText+"</a></li></ul>");a.customDirectionNav?a.directionNav=a.customDirectionNav:a.controlsContainer?($(a.controlsContainer).append(e),a.directionNav=$("."+n+"direction-nav li a",a.controlsContainer)):(a.append(e),a.directionNav=$("."+n+"direction-nav li a",a)),m.directionNav.update(),a.directionNav.bind(r,function(e){e.preventDefault();var t;(""===o||o===e.type)&&(t=a.getTarget($(this).hasClass(n+"next")?"next":"prev"),a.flexAnimate(t,a.vars.pauseOnAction)),""===o&&(o=e.type),m.setToClearWatchedEvent()})},update:function(){var e=n+"disabled";1===a.pagingCount?a.directionNav.addClass(e).attr("tabindex","-1"):a.vars.animationLoop?a.directionNav.removeClass(e).removeAttr("tabindex"):0===a.animatingTo?a.directionNav.removeClass(e).filter("."+n+"prev").addClass(e).attr("tabindex","-1"):a.animatingTo===a.last?a.directionNav.removeClass(e).filter("."+n+"next").addClass(e).attr("tabindex","-1"):a.directionNav.removeClass(e).removeAttr("tabindex")}},pausePlay:{setup:function(){var e=$('<div class="'+n+'pauseplay"><a></a></div>');a.controlsContainer?(a.controlsContainer.append(e),a.pausePlay=$("."+n+"pauseplay a",a.controlsContainer)):(a.append(e),a.pausePlay=$("."+n+"pauseplay 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n=-t.translationX,i=-t.translationY;return w+=c?i:n,m=w,y=c?Math.abs(w)<Math.abs(-n):Math.abs(w)<Math.abs(-i),t.detail===t.MSGESTURE_FLAG_INERTIA?void setImmediate(function(){e._gesture.stop()}):void((!y||Number(new Date)-f>500)&&(t.preventDefault(),!v&&a.transitions&&(a.vars.animationLoop||(m=w/(0===a.currentSlide&&0>w||a.currentSlide===a.last&&w>0?Math.abs(w)/p+2:1)),a.setProps(l+m,"setTouch"))))}}function s(e){e.stopPropagation();var t=e.target._slider;if(t){if(t.animatingTo===t.currentSlide&&!y&&null!==m){var a=d?-m:m,n=t.getTarget(a>0?"next":"prev");t.canAdvance(n)&&(Number(new Date)-f<550&&Math.abs(a)>50||Math.abs(a)>p/2)?t.flexAnimate(n,t.vars.pauseOnAction):v||t.flexAnimate(t.currentSlide,t.vars.pauseOnAction,!0)}r=null,o=null,m=null,l=null,w=0}}var r,o,l,p,m,f,g,h,S,y=!1,x=0,b=0,w=0;i?(e.style.msTouchAction="none",e._gesture=new MSGesture,e._gesture.target=e,e.addEventListener("MSPointerDown",t,!1),e._slider=a,e.addEventListener("MSGestureChange",n,!1),e.addEventListener("MSGestureEnd",s,!1)):(g=function(t){a.animating?t.preventDefault():(window.navigator.msPointerEnabled||1===t.touches.length)&&(a.pause(),p=c?a.h:a.w,f=Number(new Date),x=t.touches[0].pageX,b=t.touches[0].pageY,l=u&&d&&a.animatingTo===a.last?0:u&&d?a.limit-(a.itemW+a.vars.itemMargin)*a.move*a.animatingTo:u&&a.currentSlide===a.last?a.limit:u?(a.itemW+a.vars.itemMargin)*a.move*a.currentSlide:d?(a.last-a.currentSlide+a.cloneOffset)*p:(a.currentSlide+a.cloneOffset)*p,r=c?b:x,o=c?x:b,e.addEventListener("touchmove",h,!1),e.addEventListener("touchend",S,!1))},h=function(e){x=e.touches[0].pageX,b=e.touches[0].pageY,m=c?r-b:r-x,y=c?Math.abs(m)<Math.abs(x-o):Math.abs(m)<Math.abs(b-o);var t=500;(!y||Number(new Date)-f>t)&&(e.preventDefault(),!v&&a.transitions&&(a.vars.animationLoop||(m/=0===a.currentSlide&&0>m||a.currentSlide===a.last&&m>0?Math.abs(m)/p+2:1),a.setProps(l+m,"setTouch")))},S=function(t){if(e.removeEventListener("touchmove",h,!1),a.animatingTo===a.currentSlide&&!y&&null!==m){var n=d?-m:m,i=a.getTarget(n>0?"next":"prev");a.canAdvance(i)&&(Number(new Date)-f<550&&Math.abs(n)>50||Math.abs(n)>p/2)?a.flexAnimate(i,a.vars.pauseOnAction):v||a.flexAnimate(a.currentSlide,a.vars.pauseOnAction,!0)}e.removeEventListener("touchend",S,!1),r=null,o=null,m=null,l=null},e.addEventListener("touchstart",g,!1))},resize:function(){!a.animating&&a.is(":visible")&&(u||a.doMath(),v?m.smoothHeight():u?(a.slides.width(a.computedW),a.update(a.pagingCount),a.setProps()):c?(a.viewport.height(a.h),a.setProps(a.h,"setTotal")):(a.vars.smoothHeight&&m.smoothHeight(),a.newSlides.width(a.computedW),a.setProps(a.computedW,"setTotal")))},smoothHeight:function(e){if(!c||v){var t=v?a:a.viewport;e?t.animate({height:a.slides.eq(a.animatingTo).height()},e):t.height(a.slides.eq(a.animatingTo).height())}},sync:function(e){var t=$(a.vars.sync).data("flexslider"),n=a.animatingTo;switch(e){case"animate":t.flexAnimate(n,a.vars.pauseOnAction,!1,!0);break;case"play":t.playing||t.asNav||t.play();break;case"pause":t.pause()}},uniqueID:function(e){return e.filter("[id]").add(e.find("[id]")).each(function(){var e=$(this);e.attr("id",e.attr("id")+"_clone")}),e},pauseInvisible:{visProp:null,init:function(){var e=m.pauseInvisible.getHiddenProp();if(e){var t=e.replace(/[H|h]idden/,"")+"visibilitychange";document.addEventListener(t,function(){m.pauseInvisible.isHidden()?a.startTimeout?clearTimeout(a.startTimeout):a.pause():a.started?a.play():a.vars.initDelay>0?setTimeout(a.play,a.vars.initDelay):a.play()})}},isHidden:function(){var e=m.pauseInvisible.getHiddenProp();return e?document[e]:!1},getHiddenProp:function(){var e=["webkit","moz","ms","o"];if("hidden"in document)return"hidden";for(var t=0;t<e.length;t++)if(e[t]+"Hidden"in document)return e[t]+"Hidden";return null}},setToClearWatchedEvent:function(){clearTimeout(l),l=setTimeout(function(){o=""},3e3)}},a.flexAnimate=function(e,t,i,r,o){if(a.vars.animationLoop||e===a.currentSlide||(a.direction=e>a.currentSlide?"next":"prev"),p&&1===a.pagingCount&&(a.direction=a.currentItem<e?"next":"prev"),!a.animating&&(a.canAdvance(e,o)||i)&&a.is(":visible")){if(p&&r){var l=$(a.vars.asNavFor).data("flexslider");if(a.atEnd=0===e||e===a.count-1,l.flexAnimate(e,!0,!1,!0,o),a.direction=a.currentItem<e?"next":"prev",l.direction=a.direction,Math.ceil((e+1)/a.visible)-1===a.currentSlide||0===e)return a.currentItem=e,a.slides.removeClass(n+"active-slide").eq(e).addClass(n+"active-slide"),!1;a.currentItem=e,a.slides.removeClass(n+"active-slide").eq(e).addClass(n+"active-slide"),e=Math.floor(e/a.visible)}if(a.animating=!0,a.animatingTo=e,t&&a.pause(),a.vars.before(a),a.syncExists&&!o&&m.sync("animate"),a.vars.controlNav&&m.controlNav.active(),u||a.slides.removeClass(n+"active-slide").eq(e).addClass(n+"active-slide"),a.atEnd=0===e||e===a.last,a.vars.directionNav&&m.directionNav.update(),e===a.last&&(a.vars.end(a),a.vars.animationLoop||a.pause()),v)s?(a.slides.eq(a.currentSlide).css({opacity:0,zIndex:1}),a.slides.eq(e).css({opacity:1,zIndex:2}),a.wrapup(f)):(a.slides.eq(a.currentSlide).css({zIndex:1}).animate({opacity:0},a.vars.animationSpeed,a.vars.easing),a.slides.eq(e).css({zIndex:2}).animate({opacity:1},a.vars.animationSpeed,a.vars.easing,a.wrapup));else{var f=c?a.slides.filter(":first").height():a.computedW,g,h,S;u?(g=a.vars.itemMargin,S=(a.itemW+g)*a.move*a.animatingTo,h=S>a.limit&&1!==a.visible?a.limit:S):h=0===a.currentSlide&&e===a.count-1&&a.vars.animationLoop&&"next"!==a.direction?d?(a.count+a.cloneOffset)*f:0:a.currentSlide===a.last&&0===e&&a.vars.animationLoop&&"prev"!==a.direction?d?0:(a.count+1)*f:d?(a.count-1-e+a.cloneOffset)*f:(e+a.cloneOffset)*f,a.setProps(h,"",a.vars.animationSpeed),a.transitions?(a.vars.animationLoop&&a.atEnd||(a.animating=!1,a.currentSlide=a.animatingTo),a.container.unbind("webkitTransitionEnd transitionend"),a.container.bind("webkitTransitionEnd transitionend",function(){clearTimeout(a.ensureAnimationEnd),a.wrapup(f)}),clearTimeout(a.ensureAnimationEnd),a.ensureAnimationEnd=setTimeout(function(){a.wrapup(f)},a.vars.animationSpeed+100)):a.container.animate(a.args,a.vars.animationSpeed,a.vars.easing,function(){a.wrapup(f)})}a.vars.smoothHeight&&m.smoothHeight(a.vars.animationSpeed)}},a.wrapup=function(e){v||u||(0===a.currentSlide&&a.animatingTo===a.last&&a.vars.animationLoop?a.setProps(e,"jumpEnd"):a.currentSlide===a.last&&0===a.animatingTo&&a.vars.animationLoop&&a.setProps(e,"jumpStart")),a.animating=!1,a.currentSlide=a.animatingTo,a.vars.after(a)},a.animateSlides=function(){!a.animating&&f&&a.flexAnimate(a.getTarget("next"))},a.pause=function(){clearInterval(a.animatedSlides),a.animatedSlides=null,a.playing=!1,a.vars.pausePlay&&m.pausePlay.update("play"),a.syncExists&&m.sync("pause")},a.play=function(){a.playing&&clearInterval(a.animatedSlides),a.animatedSlides=a.animatedSlides||setInterval(a.animateSlides,a.vars.slideshowSpeed),a.started=a.playing=!0,a.vars.pausePlay&&m.pausePlay.update("pause"),a.syncExists&&m.sync("play")},a.stop=function(){a.pause(),a.stopped=!0},a.canAdvance=function(e,t){var n=p?a.pagingCount-1:a.last;return t?!0:p&&a.currentItem===a.count-1&&0===e&&"prev"===a.direction?!0:p&&0===a.currentItem&&e===a.pagingCount-1&&"next"!==a.direction?!1:e!==a.currentSlide||p?a.vars.animationLoop?!0:a.atEnd&&0===a.currentSlide&&e===n&&"next"!==a.direction?!1:a.atEnd&&a.currentSlide===n&&0===e&&"next"===a.direction?!1:!0:!1},a.getTarget=function(e){return a.direction=e,"next"===e?a.currentSlide===a.last?0:a.currentSlide+1:0===a.currentSlide?a.last:a.currentSlide-1},a.setProps=function(e,t,n){var i=function(){var n=e?e:(a.itemW+a.vars.itemMargin)*a.move*a.animatingTo,i=function(){if(u)return"setTouch"===t?e:d&&a.animatingTo===a.last?0:d?a.limit-(a.itemW+a.vars.itemMargin)*a.move*a.animatingTo:a.animatingTo===a.last?a.limit:n;switch(t){case"setTotal":return d?(a.count-1-a.currentSlide+a.cloneOffset)*e:(a.currentSlide+a.cloneOffset)*e;case"setTouch":return d?e:e;case"jumpEnd":return d?e:a.count*e;case"jumpStart":return d?a.count*e:e;default:return e}}();return-1*i+"px"}();a.transitions&&(i=c?"translate3d(0,"+i+",0)":"translate3d("+i+",0,0)",n=void 0!==n?n/1e3+"s":"0s",a.container.css("-"+a.pfx+"-transition-duration",n),a.container.css("transition-duration",n)),a.args[a.prop]=i,(a.transitions||void 0===n)&&a.container.css(a.args),a.container.css("transform",i)},a.setup=function(e){if(v)a.slides.css({width:"100%","float":"left",marginRight:"-100%",position:"relative"}),"init"===e&&(s?a.slides.css({opacity:0,display:"block",webkitTransition:"opacity "+a.vars.animationSpeed/1e3+"s ease",zIndex:1}).eq(a.currentSlide).css({opacity:1,zIndex:2}):0==a.vars.fadeFirstSlide?a.slides.css({opacity:0,display:"block",zIndex:1}).eq(a.currentSlide).css({zIndex:2}).css({opacity:1}):a.slides.css({opacity:0,display:"block",zIndex:1}).eq(a.currentSlide).css({zIndex:2}).animate({opacity:1},a.vars.animationSpeed,a.vars.easing)),a.vars.smoothHeight&&m.smoothHeight();else{var t,i;"init"===e&&(a.viewport=$('<div 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||
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Usage of the sequence operator is discouraged, since it may lead to obfuscated code.
The sequence or comma operator allows the inclusion of multiple expressions where only is permitted. The result of the sequence is the value of the last expression. This operator is most often used in Used in another places it can make code hard to read, especially when people do not realize it even exists as a seperate operator. This check looks for usage of the sequence operator in locations where it is not necessary and could be replaced by a series of expressions or statements. var a,b,c;
a = 1, b = 1, c= 3;
could just as well be written as: var a,b,c;
a = 1;
b = 1;
c = 3;
To learn more about the sequence operator, please refer to the MDN. ![]() Curly braces around statements make for more readable code and help prevent bugs when you add further statements.
Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0)
b = 42;
If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0)
console.log("a > 0");
b = 42;
In this case the statement if (a > 0) {
console.log("a > 0");
b = 42;
}
ensures that the proper code will be executed conditionally no matter how many statements are added or removed. ![]() There is no return statement if
a is false . Are you sure this is correct? If so, consider adding return; explicitly.
This check looks for functions where a Consider this little piece of code function isBig(a) {
if (a > 5000) {
return "yes";
}
}
console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
The function This behaviour may not be what you had intended. In any case, you can add a
![]() A for in loop automatically includes the property of any prototype object, consider checking the key using
hasOwnProperty .
When iterating over the keys of an object, this includes not only the keys of the object, but also keys contained in the prototype of that object. It is generally a best practice to check for these keys specifically: var someObject;
for (var key in someObject) {
if ( ! someObject.hasOwnProperty(key)) {
continue; // Skip keys from the prototype.
}
doSomethingWith(key);
}
![]() |
This check looks for functions where a
return
statement is found in some execution paths, but not in all.Consider this little piece of code
The function
isBig
will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly returnundefined
.This behaviour may not be what you had intended. In any case, you can add a
return undefined
to the other execution path to make the return value explicit.