swiper.js
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const swiper = {
_parent:null,
_parentW:null,
_imgArr:null,
_callBack:null,
_clickEvent:null,
_config:null,
_swiperContent:null,
_swiperPoint:null,
_arrowLeft:null,
_arrowRight:null,
_timerFn:null,
_itemArr:[],
_pointArr:[],
_currentPage:0,
_num:null,
_time:3000,
_movePos:0,
_canMove:false,
_startX:null,
_endX:null,
_prevLeft:null,
_nextLeft:null,
_touchItem:null,
_autoPlay:true,
_isMobile:false,
_showPoint:true,
_startTime:null,
_endTime:null,
_prevFlag:true,
_nextFlag:true,
init:function(parent,imgArr,config,clickEvent,callBack){
// parent 最大的父元素
this._parent = parent;
for (var i = 0; i < this._parent[0].children[0].children.length; i++) {
imgArr.push(this._parent[0].children[0].children[i].children[0].attributes.src.value);
}
this._parentW = parent.width();
this._imgArr = imgArr;
this._config = config;
this._callBack = callBack;
this._clickEvent = clickEvent;
this._currentPage = 0;
this._time = 3000;
this._itemArr = [];
this._pointArr = [];
this._num = imgArr ? imgArr.length : 0;
this._isMobile = (typeof this._config.ismobile === 'boolean') ? this._config.ismobile : this.isMobile();
this._autoPlay = (typeof this._config.autoplay === 'boolean') ? this._config.autoplay : true;
this._showPoint = (typeof this._config.showpoint === 'boolean') ? this._config.showpoint : true;
this._canMove = false;
this.addEle();
},
/**判断是否是移动端 */
isMobile : function(){
let userAgentInfo = navigator.userAgent;//获取游览器请求的用户代理头的值
let Agents = ["Android", "iPhone","SymbianOS", "Windows Phone","iPad","iPod"];//定义移动设备数组
let isMobile = false;
for (let v = 0; v < Agents.length; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) {
isMobile = true;
break;
}
}
return isMobile;
},
/**填充元素 */
addEle:function(){
if(this._num <= 0)return;
this._swiperContent = this._parent.children(".swiper-content");
this._swiperPoint = this._parent.children(".swiper-point");
this._imgArr.map((item,index)=>{
let imgSrc;
if(typeof item === 'object'){
imgSrc = item.imgUrl;
}else{
imgSrc = item;
}
let swiperItem = $(`<div class="swiper-item"><img src="${imgSrc}" alt=""></div>`);
swiperItem.appendTo(this._swiperContent);
if(typeof item === 'object'){
for (let key in item){
swiperItem.prop(key,item[key]);
}
}
this._itemArr.push(swiperItem);
let pointItem = $(`<div class="swiper-circle"></div>`);
pointItem.appendTo(this._swiperPoint);
this._pointArr.push(pointItem);
if(index == 0){
swiperItem.css('left', '0');
pointItem.addClass("current-point");
}else{
swiperItem.css('left', '100%');
pointItem.removeClass("current-point");
}
})
this.arrow();
this.autoPlay();
this.addTouch();
this.showPoint();
this._callBack && this._callBack(this._itemArr);
},
/**判断是都显示轮播点 */
showPoint:function(){
if(!this._showPoint){
this._parent.children('.swiper-point').hide();
}
},
/**判断是否显示左右按钮 */
arrow:function(){
let that = this;
if(this._config.arrowtype == 'move'){
this._parent.children('.arrow-left').hide();
this._parent.children('.arrow-right').hide();
this._parent.on('mouseenter', function(){
that._parent.children('.arrow-left').fadeIn();
});
this._parent.on('mouseleave', function(){
that._parent.children('.arrow-left').fadeOut();
});
this._parent.on('mouseenter', function(){
that._parent.children('.arrow-right').fadeIn();
});
this._parent.on('mouseleave', function(){
that._parent.children('.arrow-right').fadeOut();
});
}else if(this._config.arrowtype == 'none'){
this._parent.children('.arrow-left').hide();
this._parent.children('.arrow-right').hide();
}
this.addArrowListener();
},
addArrowListener:function(){
let that = this;
this._arrowRight = this._parent.children(".arrow-right");
this._arrowRight.click(function(){
that.next();
})
this._arrowLeft = this._parent.children(".arrow-left");
this._arrowLeft.click(function(){
that.prev();
});
},
/**判断是否自动轮播*/
autoPlay:function(){
if(this._autoPlay){
let that = this;
this._time = this._config.time || 3000;
this.createTimer();
this._parent.on('mouseover', function(){
clearInterval(that._timerFn);
that._timerFn = null;
});
this._parent.on('mouseout', function(){
that.createTimer();
});
}
},
createTimer:function(){
let that = this;
this._timerFn = setInterval(function(){
that.next();
}, this._time);
},
/**转到下一个 */
next:function(){
if(this._num <= 1) return;
this._itemArr[this._currentPage].animate({'left': "-100%"},300);
this._pointArr[this._currentPage].removeClass("current-point");
this._currentPage ++;
if(this._currentPage > this._num - 1) this._currentPage = 0;
this._itemArr[this._currentPage].css('left', '100%').show().animate({'left':0},300);
this._pointArr[this._currentPage].addClass("current-point");
this.addTouch();
},
/**转到上一个*/
prev:function(){
if(this._num <= 1) return;
this._itemArr[this._currentPage].animate({'left': "100%"},300);
this._pointArr[this._currentPage].removeClass("current-point");
this._currentPage --;
if(this._currentPage < 0) this._currentPage = this._num -1;
this._itemArr[this._currentPage].css('left', '-100%').show().animate({'left':0},300);
this._pointArr[this._currentPage].addClass("current-point");
this.addTouch();
},
downFn:function(e){
e.preventDefault();
this._startTime = new Date().getTime();
this._movePos = 0;
this._canMove = true;
this._startX = this._isMobile ? e.originalEvent.targetTouches[0].pageX : e.pageX;
this._itemArr[this._currentPage].css('left',"0");
if(this._num > 2){
if(this._currentPage == 0){
this._itemArr[this._num - 1].css('left',"-100%");
this._itemArr[this._currentPage +1].css('left',"100%");
this._prevLeft = this._itemArr[this._num - 1].position().left;
this._nextLeft = this._itemArr[this._currentPage +1].position().left;
}else if(this._currentPage == this._num - 1){
this._itemArr[this._currentPage - 1].css('left',"-100%");
this._itemArr[0].css('left',"100%");
this._prevLeft = this._itemArr[this._currentPage - 1].position().left;
this._nextLeft = this._itemArr[0].position().left;
}else{
this._itemArr[this._currentPage - 1].css('left',"-100%");
this._itemArr[this._currentPage +1].css('left',"100%");
this._prevLeft = this._itemArr[this._currentPage - 1].position().left;
this._nextLeft = this._itemArr[this._currentPage +1].position().left;
}
}
if(this._isMobile){
this._touchItem.on('touchmove',this.moveFn.bind(this));
$(document).on('touchend',this.upFn.bind(this));
}else{
this._touchItem.on('mousemove',this.moveFn.bind(this));
$(document).on('mouseup',this.upFn.bind(this));
}
},
moveFn:function(e){
if(this._canMove){
if(this._isMobile && this._autoPlay && this._timerFn != null){
clearInterval(this._timerFn);
this._timerFn = null;
}
this._endX = this._isMobile ? e.originalEvent.targetTouches[0].pageX : e.pageX;
this._movePos = this._endX - this._startX;
this._itemArr[this._currentPage].animate({'left':this._movePos},0);
if(this._num > 2){
if(this._currentPage == 0){
this._itemArr[this._num - 1].animate({'left':this._prevLeft + this._movePos},0);
this._itemArr[this._currentPage +1].animate({'left':this._nextLeft + this._movePos},0);
}else if(this._currentPage == this._num - 1){
this._itemArr[this._currentPage - 1].animate({'left':this._prevLeft + this._movePos},0);
this._itemArr[0].animate({'left':this._nextLeft + this._movePos},0);
}else{
this._itemArr[this._currentPage - 1].animate({'left':this._prevLeft + this._movePos},0);
this._itemArr[this._currentPage +1].animate({'left':this._nextLeft + this._movePos},0);
}
}else if(this._num == 2){
let index = this._currentPage == 0 ? 1 : 0;
if(this._movePos > 0){
if(!this._nextFlag) this._nextFlag = true;
if(this._prevFlag){
this._prevFlag = false;
this._itemArr[index].css('left','-100%');
this._prevLeft = this._itemArr[index].position().left;
}
this._itemArr[index].animate({'left':this._prevLeft + this._movePos},0);
}else{
if(!this._prevFlag) this._prevFlag = true;
if(this._nextFlag){
this._nextFlag = false;
this._itemArr[index].css('left','100%');
this._nextLeft = this._itemArr[index].position().left;
}
this._itemArr[index].animate({'left':this._nextLeft + this._movePos},0);
}
}
}
},
upFn(e){
if(!this._canMove) return;
this._endTime = new Date().getTime();
if(this._endTime - this._startTime < 200){
this._clickEvent && this._clickEvent(this._touchItem);
}
if(this._isMobile){
this._touchItem.off('touchstart');
this._touchItem.off('touchmove');
$(document).off('touchend');
}else{
this._touchItem.off('mousedown');
this._touchItem.off('mousemove');
$(document).off('mouseup');
}
if(this._isMobile && this._autoPlay && this._timerFn == null){
this.createTimer();
}
if(this._canMove) this._canMove = false;
if(this._num > 2){
if(Math.abs(this._movePos) > this._parentW / 3){
if(this._movePos > 0){
this._itemArr[this._currentPage].animate({'left':'100%'},300);
if(this._currentPage == 0){
this._itemArr[this._num - 1].animate({'left':0},300);
this._itemArr[this._currentPage +1].css('left','100%');
}else if(this._currentPage == this._num - 1){
this._itemArr[this._currentPage - 1].animate({'left':0},300);
this._itemArr[0].css('left','100%');
}else{
this._itemArr[this._currentPage - 1].animate({'left':0},300);
this._itemArr[this._currentPage +1].css('left','100%');
}
this._pointArr[this._currentPage].removeClass("current-point");
this._currentPage --;
if(this._currentPage < 0) this._currentPage = this._num -1;
this._pointArr[this._currentPage].addClass("current-point");
}else{
this._itemArr[this._currentPage].animate({'left':'-100%'},300);
if(this._currentPage == 0){
this._itemArr[this._num - 1].css('left','-100%');
this._itemArr[this._currentPage +1].animate({'left':0},300);
}else if(this._currentPage == this._num - 1){
this._itemArr[this._currentPage - 1].css('left','-100%');
this._itemArr[0].animate({'left':0},300);
}else{
this._itemArr[this._currentPage - 1].css('left','-100%');
this._itemArr[this._currentPage + 1].animate({'left':0},300);
}
this._pointArr[this._currentPage].removeClass("current-point");
this._currentPage ++;
if(this._currentPage > this._num - 1) this._currentPage = 0;
this._pointArr[this._currentPage].addClass("current-point");
}
}else{
this._itemArr[this._currentPage].animate({'left':0},300);
if(this._currentPage == 0){
this._itemArr[this._num - 1].animate({'left':'-100%'},300);
this._itemArr[this._currentPage +1].animate({'left':'100%'},300);
}else if(this._currentPage == this._num - 1){
this._itemArr[this._currentPage - 1].animate({'left':'-100%'},300);
this._itemArr[0].animate({'left':'100%'},300);
}else{
this._itemArr[this._currentPage - 1].animate({'left':'-100%'},300);
this._itemArr[this._currentPage + 1].animate({'left':'100%'},300);
}
}
}else if(this._num == 2){
let index = this._currentPage == 0 ? 1 : 0;
if(Math.abs(this._movePos) > this._parentW / 3){
if(this._movePos > 0){
this._itemArr[this._currentPage].animate({'left':'100%'},300);
}else{
this._itemArr[this._currentPage].animate({'left':'-100%'},300);
}
this._itemArr[index].animate({'left':0},300);
this._pointArr[this._currentPage].removeClass("current-point");
this._pointArr[index].addClass("current-point");
this._currentPage = index;
}else{
this._itemArr[this._currentPage].animate({'left':0},300);
if(this._movePos > 0){
this._itemArr[index].animate({'left':'-100%'},300);
}else{
this._itemArr[index].animate({'left':'100%'},300);
}
}
}else if(this._num == 1){
this._itemArr[this._currentPage].animate({'left':0},300);
}
this.addTouch();
},
/** 添加触摸事件*/
addTouch:function(){
let cantouch = (typeof this._config.cantouch === 'boolean') ? this._config.cantouch : true;
if(cantouch){
this._touchItem = this._itemArr[this._currentPage];
if(this._isMobile){
this._touchItem.on('touchstart',this.downFn.bind(this));
}else{
this._touchItem.on('mousedown',this.downFn.bind(this));
}
}
}
}