flickity是一款响应式、适用于移动设备触摸屏、可滑动显示的jQuery幻灯片插件。
安装方法
可以通过Bower或npm来安装:
Bower: bower install flickity --save npm: npm install flickity --save |
使用方法
要使用该幻灯片插件首先要在页面中引入 flickity.pkgd.js 和 flickity.css 文件。该幻灯片的HTML结构如下:
< link rel = "stylesheet" href = "/path/to/flickity.css" media = "screen" > < script src = "/path/to/flickity.pkgd.min.js" ></ script > |
< div class = "gallery" > < div class = "cell" >...</ div > < div class = "cell" >...</ div > < div class = "cell" >...</ div > ... </ div > |
你可以将该幻灯片插件当做一个jquery插件来调用:$('selector').flickity()
$( '#main-gallery' ).flickity({ // options cellAlign: 'left' , contain: true }); |
你也可以使用纯js来调用该插件:new Flickity( elem )
。Flickity()
构造函数接收两个参数:幻灯片元素和参数选项。
var elem = document.querySelector( '#main-gallery' ); var flicky = new Flickity( elem, { // options cellAlign: 'left' , contain: true }); // element argument can be a selector string // for an individual element var flicky = new Flickity( '#main-gallery' , { // options }); |
你还可以在HTML中初始化Flickity插件,不用写任何的js代码。你只需要在幻灯片元素上添加class js-flickity
,可以通过data-flickity-options
属性来设置参数。
< div id = "main-gallery" class = "js-flickity" data-flickity-options = '{ "cellAlign": "left", "contain": true }' > |
data-flickity-options
属性的值用单引号,JSON数据的值用双引号。Flickity对象的构造函数:
var flky = new Flickity( '.gallery' , { // options, defaults listed accessibility: true , // enable keyboard navigation, pressing left & right keys autoPlay: false , // advances to the next cell // if true, default is 3 seconds // or set time between advances in milliseconds // i.e. `autoPlay: 1000` will advance every 1 second cellAlign: 'center' , // alignment of cells, 'center', 'left', or 'right' // or a decimal 0-1, 0 is beginning (left) of container, 1 is end (right) cellSelector: undefined, // specify selector for cell elements contain: false , // will contain cells to container // so no excess scroll at beginning or end // has no effect if wrapAround is enabled draggable: true , // enables dragging & flicking freeScroll: false , // enables content to be freely scrolled and flicked // without aligning cells friction: 0.2, // smaller number = easier to flick farther imagesLoaded: false , // if imagesLoaded is present, Flickity can re-position cells // once images are loaded initialIndex: 0, // zero-based index of the initial selected cell percentPosition: true , // sets positioning in percent values, rather than pixels // Enable if items have percent widths // Disable if items have pixel widths, like images prevNextButtons: true , // creates and enables buttons to click to previous & next cells pageDots: true , // create and enable page dots resizeBound: true , // listens to window resize events to adjust size & positions watchCSS: false , // watches the content of :after of the element // activates if #element:after { content: 'flickity' } // IE8 and Android 2.3 do not support watching :after // set watch: 'fallbackOn' to enable for these browsers wrapAround: false // at end of cells, wraps-around to first for infinite scrolling }); |
可用参数
cellAlign
幻灯片元素中的单元对齐方式。可选值为:'center'
, 'left'
, 'right'
。默认值为'center'
。
wrapAround
该参数可用于制作无限循环的幻灯片。设置为true
时为无限循环。默认值为false
。
contain
在幻灯片的开始或结束处包含一个单元格,防止幻灯片溢出。可选值为true
和false
。默认值为false
。
freeScroll
允许自由滚动,最后一个单元格没有对齐格子。可选值为true
和false
。默认值为false
。
允许freeScroll
和contain
可制作简单的水平滚动。
freeScroll: true,
contain: true,
// disable previous & next buttons and dots
prevNextButtons: false,
pageDots: false
freeScroll
和contain
设置为true的效果:freeScroll: true,
wrapAround: true
autoPlay
设置自动播放。如果autoPlay: true
则每3秒切换一次。幻灯片切换的速度单位是毫秒,例如设置为autoPlay: 1500
则1.5秒切换一次。
在鼠标滑过幻灯片时,自动播放将停止,鼠标离开后重新开始自动播放。幻灯片被点击或单元格被选择时,自动播放也会停止。
可选值:true
和false
或一个整数。默认值为false
。
autoPlay: true
watchCSS
你可以通过CSS来使用或禁用Flickity。watchCSS
选项关注幻灯片元素的:after
伪元素的内容。如果:after
伪元素的content
是flickity
则幻灯片可用。
IE8和Android 2.3不支持:after
。当设置watchCSS: true
时Flickity不可用。可以在这些浏览器上设置watchCSS
为'fallbackOn'
来使用Flickity。
watchCSS: true
/* enable Flickity by default */
.gallery:after {
content: 'flickity';
display: none; /* hide :after */
}
@media screen and ( min-width: 768px ) {
/* disable Flickity for large devices */
.gallery:after {
content: '';
}
}
使用图片
Flickity可以制作效果很酷的图片幻灯片特效。
< div class = "gallery js-flickity" data-flickity-options = '{ "imagesLoaded": true, "percentPosition": false }' > < img src = "1.jpg" alt = "orange tree" /> < img src = "2.jpg" alt = "submerged" /> < img src = "3.jpg" alt = "look-out" /> ... </ div > |
imagesLoaded
没有价值的图片是没有尺寸的,它们会跑到单元格之外。为了修补这个问题,可以使用imagesLoaded
来将图片重新定位。
可选值:true
和false
,默认值为false
。
imagesLoaded: true
该选项需要在页面中引入 imagesLoaded 。
< script src = "/path/to/imagesloaded.pkgd.js" ></ script > |
其它可选参数
accessibility: true , // enable keyboard navigation, pressing left & right keys cellSelector: undefined, // specify selector for cell elements draggable: true , // enables dragging & flicking initialIndex: 0, // zero-based index of the initial selected cell percentPosition: true , // sets positioning in percent values, rather than pixels // Enable if items have percent widths // Disable if items have pixel widths, like images pageDots: true , // enables page dots prevNextButtons: true , // creates and enables buttons to click to previous & next cells resizeBound: true , // listens to window resize events to adjust size & positions rightToLeft: false // enables right-to-left ordering for right-to-left languages |
还有一些用法请参考演示页面中的说明。