最近写公司项目有涉及到轮播banner，一般的ui框架无法满足产品需求；所以自己写了一个层叠式轮播组件；现在分享给大家；
主要技术栈是vue.js ;javascript;jquery；确定实现思路因工作繁忙，暂时不做梳理了；直接贴代码参考；
此组件是基于jquer封装，在vue项目中使用首先需要先安装jquery插件：指令：npm install jquery,安装完成之后再webpack.base.conf.js配置插件：
plugins: [
new webpack.ProvidePlugin({
$: 'jquery',
jQuery: 'jquery'
}),
]
主要实现逻辑js文件：postercarousel.js；
代码如下：
(function(jq){
function postercarousel(o, options, data){
this.parent = jq("#"+ o);
this.body = jq("body");
if (this.parent.length <= 0) {
return false;
}
this.options = jq.extend({}, postercarousel.options, options);
if(typeof(data) !== 'object') return false;
this.data = data || {};
this.reset();
//处理页面resize
var _this = this;
jq(window).resize(function(){
_this.reset();
});
};
postercarousel.prototype = {
reset: function(options){
if(typeof(options) == 'object'){
jq.extend(this.options, options);
}
if(parseInt(this.body.outerWidth())>1255 || navigator.userAgent.indexOf('iPad') !== -1){
this.options.width = 970;
}else{
this.options.width = 970;
}
this.total = this.data.length;
this.pageNow = this.options.initPage;
this.preLeft = 0;
this.nextLeft = this.options.width-530;
this.preNLeft = -530;
this.nextNLeft = this.options.width;
this.pageNowLeft = (this.options.width-640)/2
this.drawContent();
},
drawContent: function(){
this.parent.empty();
this.parent.css({width:this.options.width+"px", height:this.options.height+"px", position: "relative"});
this.content = document.createElement("DIV");
this.content.className = this.options.className;
this.content.cssText = "width:"+this.options.width+"px;height:"+this.options.height+"px;cursor:move;position:absolute;";
this.bottomNav = document.createElement("DIV");
this.bottomNav.className = "bottomNav";
for(var i=1; i<= this.total; i++){
var bottomItem = document.createElement("DIV");
bottomItem.className = "bottomNavButtonOFF";
if(i == this.pageNow){
bottomItem.className = "bottomNavButtonOFF bottomNavButtonON";
}
bottomItem.setAttribute("ref", i);
this.bottomNav.appendChild(bottomItem);
}
this.content.appendChild(this.bottomNav);
this.bannerControls = '';
this.content.innerHTML += this.bannerControls;
this.contentHolder = document.createElement("DIV");
this.contentHolder.style.width = this.options.width + 'px';
this.contentHolder.style.height = this.options.height + 'px';
for(var item=0, i = 1, l= this.data.length ; item < l ; ++item, ++i){
var contentHolderUnit = document.createElement("DIV");
contentHolderUnit.className = "contentHolderUnit";
contentHolderUnit.setAttribute("ref", i);
contentHolderUnit.setAttribute("id", 'contentHolderUnit' + (i));
var unitItem = '';
unitItem += '';
unitItem += '!['+this.data[item].title+']('+this.data[item].img+')
';
unitItem += '';
unitItem += '';
unitItem += '';
contentHolderUnit.innerHTML = unitItem;
this.contentHolder.appendChild(contentHolderUnit);
}
this.content.appendChild(this.contentHolder);
this.parent.append(this.content);
this.parent.css({overflow:'hidden'});
this.initContent();
this.bind();
this.start();
},
initContent: function(){
contentHolderUnit = this.parent.find(".contentHolderUnit");
contentHolderUnit.css({width:'0px',height:'0px', opacity: 0, left:this.options.width/2+'px', zIndex:0, marginTop: '135px'});
this.parent.find(".contentHolderUnit:nth-child("+this.pageNow+")").css({width:'640px',height:'450', opacity: 1, left: this.pageNowLeft+'px', zIndex: 3, marginTop: 0});
this.parent.find(".contentHolderUnit:nth-child("+this.pageNow+") .elementOverlay").css({opacity:0});
this.parent.find(".contentHolderUnit:nth-child("+this.pageNow+") .leftShadow").css({opacity:1});
this.parent.find(".contentHolderUnit:nth-child("+this.pageNow+") .rightShadow").css({opacity:1});
var pre = this.pageNow > 1 ? this.pageNow -1: this.total;
var next = this.pageNow == this.total ? 1 : this.pageNow + 1;
this.parent.find(".contentHolderUnit:nth-child("+pre+")").css({opacity: 1, left: this.preLeft+'px',height: '450', width: '530px', zIndex: 0, marginTop: '23px'});
this.parent.find(".contentHolderUnit:nth-child("+pre+") .elementOverlay").css({opacity:0.4});
this.parent.find(".contentHolderUnit:nth-child("+pre+") .leftShadow").css({opacity:0});
this.parent.find(".contentHolderUnit:nth-child("+pre+") .rightShadow").css({opacity:0});
this.parent.find(".contentHolderUnit:nth-child("+next+")").css({opacity: 1, left: this.nextLeft+'px',height: '450', width: '530px', zIndex: 0, marginTop: '23px'});
this.parent.find(".contentHolderUnit:nth-child("+next+") .elementOverlay").css({opacity:0.4});
this.parent.find(".contentHolderUnit:nth-child("+next+") .leftShadow").css({opacity:0});
this.parent.find(".contentHolderUnit:nth-child("+next+") .rightShadow").css({opacity:0});
},
bind: function(){
this.leftNav = this.parent.find(".leftNav");
this.rightNav = this.parent.find(".rightNav");
this.bottonNav = this.parent.find(".bottomNavButtonOFF");
this.lists = this.parent.find(".contentHolderUnit");
var _this = this;
this.parent.mouseover(function(){
_this.stop();
_this.leftNav.show();
_this.rightNav.show();
});
this.parent.mouseout(function(){
_this.start();
//_this.leftNav.hide();
//_this.rightNav.hide();
});
_this.leftNav.click(function(){
_this.turn("right");
});
_this.rightNav.click(function(){
_this.turn("left");
});
_this.bottonNav.click(function(){
var ref = parseInt(this.getAttribute("ref"));
if(_this.pageNow == ref) return false;
if(_this.pageNow < ref){
var rightAbs = ref - _this.pageNow;
var leftAbs = _this.pageNow + _this.total - ref;
}else{
var rightAbs = _this.total - _this.pageNow + ref;
var leftAbs = _this.pageNow - ref;
}
if(leftAbs < rightAbs){
dir = "right";
}else{
dir = "left";
}
_this.turnpage(ref, dir);
return false;
});
_this.lists.click(function(e){
var ref = parseInt(this.getAttribute("ref"));
if(_this.pageNow == ref) {
return true;
}else{
e.preventDefault();
}
if(_this.pageNow < ref){
var rightAbs = ref - _this.pageNow;
var leftAbs = _this.pageNow + _this.total - ref;
}else{
var rightAbs = _this.total - _this.pageNow + ref;
var leftAbs = _this.pageNow - ref;
}
if(leftAbs < rightAbs){
dir = "right";
}else{
dir = "left";
}
_this.turnpage(ref, dir);
});
},
initBottomNav: function(){
this.parent.find(".bottomNavButtonOFF").removeClass("bottomNavButtonON");
this.parent.find(".bottomNavButtonOFF:nth-child("+this.pageNow+")").addClass("bottomNavButtonON");
},
start: function(){
var _this = this;
if(_this.timerId) _this.stop();
_this.timerId = setInterval(function(){
if(_this.options.direct == "left"){
_this.turn("left");
}else{
_this.turn("right");
}
}, _this.options.delay);
},
stop: function(){
clearInterval(this.timerId);
},
turn: function(dir){
var _this = this;
if(dir == "right"){
var page = _this.pageNow -1;
if(page <= 0) page = _this.total;
}else{
var page = _this.pageNow + 1;
if(page > _this.total) page = 1;
}
_this.turnpage(page, dir);
},
turnpage: function(page, dir){
var _this = this;
if(_this.locked) return false;
_this.locked = true;
if(_this.pageNow == page) return false;
var run = function(page, dir, t){
var pre = page > 1 ? page -1: _this.total;
var next = page == _this.total ? 1 : page + 1;
var preP = pre - 1 >= 1 ? pre-1 : _this.total;
var nextN = next + 1 > _this.total ? 1 : next+1;
if(pre != _this.pageNow && next != _this.pageNow){
var nowpre = _this.pageNow > 1 ? _this.pageNow -1: _this.total;
var nownext = _this.pageNow == _this.total ? 1 : _this.pageNow + 1;
_this.parent.find(".contentHolderUnit:nth-child("+nowpre+")").animate({width:'0px',height:'0px', opacity: 0, left:_this.options.width/2+'px', zIndex:0, marginTop: '135px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+_this.pageNow+")").animate({width:'0px',height:'0px', opacity: 0, left:_this.options.width/2+'px', zIndex:0, marginTop: '135px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+nownext+")").animate({width:'0px',height:'0px', opacity: 0, left:_this.options.width/2+'px', zIndex:0, marginTop: '135px'}, t);
}
if(dir == 'left'){
_this.parent.find(".contentHolderUnit:nth-child("+_this.pageNow+")").css({zIndex: 0});
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .elementOverlay").css({opacity:0.4});
_this.parent.find(".contentHolderUnit:nth-child("+pre+")").animate({opacity: 1, left: _this.preLeft+'px', height: '450', width: '530px', zIndex: 2, marginTop: '23px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .leftShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .rightShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+page+")").css({zIndex: 3});
_this.parent.find(".contentHolderUnit:nth-child("+page+")").animate({opacity: 1, left: _this.pageNowLeft+'px', height: '450', width: '640px', zIndex: 3, marginTop: '0'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+page+") .elementOverlay").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+page+") .leftShadow").css({opacity:1});
_this.parent.find(".contentHolderUnit:nth-child("+page+") .rightShadow").css({opacity:1});
_this.parent.find(".contentHolderUnit:nth-child("+next+")").css({opacity: 0, left: _this.nextNLeft+'px', height: '450', width: '530px', zIndex: 2, marginTop: '85px'});
_this.parent.find(".contentHolderUnit:nth-child("+next+")").animate({opacity: 1, left: _this.nextLeft+'px', height: '450', width:"530px", zIndex: 2, marginTop: '23px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+next+") .elementOverlay").css({opacity:0.4});
_this.parent.find(".contentHolderUnit:nth-child("+next+") .leftShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+next+") .rightShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+preP+")").css({zIndex:0});
_this.parent.find(".contentHolderUnit:nth-child("+preP+")").animate({width:'530px',height:'350px', opacity: 0, left:_this.preNLeft+'px', zIndex:0, marginTop: '85px'},t, "", function(){_this.locked=false;});
}else{
_this.parent.find(".contentHolderUnit:nth-child("+_this.pageNow+")").css({zIndex: 0});
_this.parent.find(".contentHolderUnit:nth-child("+next+")").css({zIndex:2});
_this.parent.find(".contentHolderUnit:nth-child("+next+")").animate({opacity: 1, left: _this.nextLeft+'px', height: '450', width: '530px', zIndex: 2, marginTop: '23px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+next+") .elementOverlay").css({opacity:0.4});
_this.parent.find(".contentHolderUnit:nth-child("+next+") .leftShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+next+") .rightShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+page+")").css({zIndex: 3}, t);
_this.parent.find(".contentHolderUnit:nth-child("+page+")").animate({opacity: 1, left: _this.pageNowLeft+'px', height: '450', width: '640px', zIndex: 3, marginTop: '0px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+page+") .elementOverlay").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+page+") .leftShadow").css({opacity:1});
_this.parent.find(".contentHolderUnit:nth-child("+page+") .rightShadow").css({opacity:1});
_this.parent.find(".contentHolderUnit:nth-child("+pre+")").css({opacity: 0, left: _this.preNLeft+'px', height: '450', width: '530px', zIndex: 2, marginTop: '85px'});
_this.parent.find(".contentHolderUnit:nth-child("+pre+")").animate({opacity: 1, left: _this.preLeft+'px', height: '450', width: '530px', zIndex: 2, marginTop: '23px'}, t);
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .elementOverlay").css({opacity:0.4});
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .leftShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+pre+") .rightShadow").css({opacity:0});
_this.parent.find(".contentHolderUnit:nth-child("+nextN+")").css({zIndex:0});
_this.parent.find(".contentHolderUnit:nth-child("+nextN+")").animate({width:'530px',height:'450', opacity: 0, left:_this.nextNLeft+'px', zIndex:0, marginTop: '85px'}, t, "",function(){_this.locked=false;});
}
_this.pageNow = page;
_this.initBottomNav();
};
run(page, dir,_this.options.speed);
}
};
postercarousel.options = {
offsetPages : 3,//默认可视最大条数
direct : "left",//滚动的方向
initPage : 1,//默认当前显示第几条
className : "postercarousel",//最外层样式
autoWidth : false,//默认不用设置宽
// width : 100,//最外层宽，需要使用的时候在传,默认由程序自动判断
height :450,//最外层高
delay : 3000,//滚动间隔（毫秒）
speed : 500 //滚动速度毫秒
};
window.postercarousel = postercarousel;
})(jQuery)
相关vue组件代码以及使用方式：
代码如下：
最后
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