很喜歡在插件上進行修修改改。Swiper3是我很喜歡使用的一個輪播圖插件。在這個插件上面，不知道是我改動的原因，還是下載的版本原因，我現在使用的這個版本的js竟然有大部分屬性兼容ie9（感到很奇跡！！）。一，這個版本在ie9上面兼容什么呢？ 兼容自定義高度；傳統swiper和此版本swiper對比圖：（如圖1）
圖1
如果使用改動版本的js，可改善這個問題。 左右按鈕有效，位置不變； 分頁器有效，且可點擊跳轉到對應banner上； Loop循環屬性有效； 禁止切換有效； 支持一行多列（slidesPerView參數）； Swiper的回調函數有效； breakpoints斷點參數可用； 未知。改動版本在IE9上不兼容什么？ 不兼容自動切換； 不支持多列1行或者多列多行； 未知。二，Swiper（可復制以下代碼，保存為js放于項目中）；
/**
* Swiper 3.4.2
* Most modern mobile touch slider and framework with hardware accelerated transitions
*
* http://www.idangero.us/swiper/
*
* Copyright 2017, Vladimir Kharlampidi
* The iDangero.us
* http://www.idangero.us/
*
* Licensed under MIT
*
* Released on: March 10, 2017
*/
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a=x.slides.eq(x.activeIndex);a.addClass(x.params.slideActiveClass),s.loop&&(a.hasClass(x.params.slideDuplicateClass)?x.wrapper.children("."+x.params.slideClass+":not(."+x.params.slideDuplicateClass+')[data-swiper-slide-index="'+x.realIndex+'"]').addClass(x.params.slideDuplicateActiveClass):x.wrapper.children("."+x.params.slideClass+"."+x.params.slideDuplicateClass+'[data-swiper-slide-index="'+x.realIndex+'"]').addClass(x.params.slideDuplicateActiveClass));var t=a.next("."+x.params.slideClass).addClass(x.params.slideNextClass);x.params.loop&&0===t.length&&(t=x.slides.eq(0),t.addClass(x.params.slideNextClass));var r=a.prev("."+x.params.slideClass).addClass(x.params.slidePrevClass);if(x.params.loop&&0===r.length&&(r=x.slides.eq(-1),r.addClass(x.params.slidePrevClass)),s.loop&&(t.hasClass(x.params.slideDuplicateClass)?x.wrapper.children("."+x.params.slideClass+":not(."+x.params.slideDuplicateClass+')[data-swiper-slide-index="'+t.attr("data-swiper-slide-index")+'"]').addClass(x.params.slideDuplicateNextClass):x.wrapper.children("."+x.params.slideClass+"."+x.params.slideDuplicateClass+'[data-swiper-slide-index="'+t.attr("data-swiper-slide-index")+'"]').addClass(x.params.slideDuplicateNextClass),r.hasClass(x.params.slideDuplicateClass)?x.wrapper.children("."+x.params.slideClass+":not(."+x.params.slideDuplicateClass+')[data-swiper-slide-index="'+r.attr("data-swiper-slide-index")+'"]').addClass(x.params.slideDuplicatePrevClass):x.wrapper.children("."+x.params.slideClass+"."+x.params.slideDuplicateClass+'[data-swiper-slide-index="'+r.attr("data-swiper-slide-index")+'"]').addClass(x.params.slideDuplicatePrevClass)),x.paginationContainer&&x.paginationContainer.length>0){var i,n=x.params.loop?Math.ceil((x.slides.length-2*x.loopedSlides)/x.params.slidesPerGroup):x.snapGrid.length;if(x.params.loop?(i=Math.ceil((x.activeIndex-x.loopedSlides)/x.params.slidesPerGroup),i>x.slides.length-1-2*x.loopedSlides&&(i-=x.slides.length-2*x.loopedSlides),i>n-1&&(i-=n),i<0&&"bullets"!==x.params.paginationType&&(i=n+i)):i=void 0!==x.snapIndex?x.snapIndex:x.activeIndex||0,"bullets"===x.params.paginationType&&x.bullets&&x.bullets.length>0&&(x.bullets.removeClass(x.params.bulletActiveClass),x.paginationContainer.length>1?x.bullets.each(function(){e(this).index()===i&&e(this).addClass(x.params.bulletActiveClass)}):x.bullets.eq(i).addClass(x.params.bulletActiveClass)),"fraction"===x.params.paginationType&&(x.paginationContainer.find("."+x.params.paginationCurrentClass).text(i+1),x.paginationContainer.find("."+x.params.paginationTotalClass).text(n)),"progress"===x.params.paginationType){var 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x.params.autoHeight&&x.updateAutoHeight()}},x.onResize=function(e){x.params.onBeforeResize&&x.params.onBeforeResize(x),x.params.breakpoints&&x.setBreakpoint();var a=x.params.allowSwipeToPrev,t=x.params.allowSwipeToNext;x.params.allowSwipeToPrev=x.params.allowSwipeToNext=!0,x.updateContainerSize(),x.updateSlidesSize(),("auto"===x.params.slidesPerView||x.params.freeMode||e)&&x.updatePagination(),x.params.scrollbar&&x.scrollbar&&x.scrollbar.set(),x.controller&&x.controller.spline&&(x.controller.spline=void 0);var s=!1;if(x.params.freeMode){var r=Math.min(Math.max(x.translate,x.maxTranslate()),x.minTranslate());x.setWrapperTranslate(r),x.updateActiveIndex(),x.updateClasses(),x.params.autoHeight&&x.updateAutoHeight()}else x.updateClasses(),s=("auto"===x.params.slidesPerView||x.params.slidesPerView>1)&&x.isEnd&&!x.params.centeredSlides?x.slideTo(x.slides.length-1,0,!1,!0):x.slideTo(x.activeIndex,0,!1,!0);x.params.lazyLoading&&!s&&x.lazy&&x.lazy.load(),x.params.allowSwipeToPrev=a,x.params.allowSwipeToNext=t,x.params.onAfterResize&&x.params.onAfterResize(x)},x.touchEventsDesktop={start:"mousedown",move:"mousemove",end:"mouseup"},window.navigator.pointerEnabled?x.touchEventsDesktop={start:"pointerdown",move:"pointermove",end:"pointerup"}:window.navigator.msPointerEnabled&&(x.touchEventsDesktop={start:"MSPointerDown",move:"MSPointerMove",end:"MSPointerUp"}),x.touchEvents={start:x.support.touch||!x.params.simulateTouch?"touchstart":x.touchEventsDesktop.start,move:x.support.touch||!x.params.simulateTouch?"touchmove":x.touchEventsDesktop.move,end:x.support.touch||!x.params.simulateTouch?"touchend":x.touchEventsDesktop.end},(window.navigator.pointerEnabled||window.navigator.msPointerEnabled)&&("container"===x.params.touchEventsTarget?x.container:x.wrapper).addClass("swiper-wp8-"+x.params.direction),x.initEvents=function(e){var 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t=e(this).index()*x.params.slidesPerGroup

新聞標題：前端開發之可以讓swiper3兼容ie9的js
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