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2024-09-27 02:06:13 +08:00
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项目合集/枸杞社/fontend/js/utils/swiper.js Normal file
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(() => {
/**
* 构造函数
* @param {*} ParentElement 父节点的选择器名称
* @param {*} Configuration 插件的自定义设置项
*/
function Swiper(ParentElement, Configuration) {
// 默认参数
// slideChangeTransitionStart【完成】
// slideTo【完成】
this.defaultConf = {
reverse: false,
timer: '', // 保存自动播放的定时器
ParentElement: '.swiper-container',
wrapper: '.swiper-wrapper',
slide: '.swiper-slide',
config: {
loop: false, // 是否开启循环播放【完成】
time: 1, // 自动播放的间隔事件【完成】
speed: 300, // 切换轮播图时候用的时间【完成】
grabCursor: false, // 鼠标放到轮播图上是否显示为 小手【完成】
initialSlide: 0, // 默认显示第一个【完成】
auto: false, // 是否开启自动播放【完成】
},
// 小圆点的父标签选择器名称
pagination: {
el: '.swiper-pagination',
},
navigation: {
nextEl: '.swiper-button-next', // 下一页
prevEl: '.swiper-button-prev', // 上一页
},
}
this.defaultConf.ParentElement = ParentElement || this.defaultConf.ParentElement;
this.defaultConf.config.loop = Configuration.loop || this.defaultConf.config.loop;
this.defaultConf.config.time = Configuration.time || this.defaultConf.config.time;
this.defaultConf.config.speed = Configuration.speed || this.defaultConf.config.speed;
this.defaultConf.config.grabCursor = Configuration.grabCursor || this.defaultConf.config.grabCursor;
this.defaultConf.config.initialSlide = Configuration.initialSlide || this.defaultConf.config.initialSlide;
this.defaultConf.config.auto = Configuration.auto || this.defaultConf.config.auto;
this.defaultConf.wrapper = Configuration.wrapper || this.defaultConf.wrapper;
this.defaultConf.slide = Configuration.slide || this.defaultConf.slide;
this.slideArr = this._(`${this.defaultConf.wrapper} ${this.defaultConf.slide}`);
// 最外层 swiper-container 宽度
this.f = this.$(this.defaultConf.ParentElement).offsetWidth;
// 判断小圆点
if (Configuration.hasOwnProperty("pagination")) {
this.defaultConf.pagination.el = Configuration.pagination.el;
this.RenderDot()
}
// 判断使用自定义前进后退按钮
if (Configuration.hasOwnProperty("navigation")) {
this.RenderNavigation()
//判断下一页按钮的名称是否自定义
if (Configuration.navigation.hasOwnProperty("nextEl")) {
this.defaultConf.navigation.nextEl = Configuration.navigation.nextEl;
}
//判断上一页按钮的名称是否自定义
if (Configuration.navigation.hasOwnProperty("prevEl")) {
this.defaultConf.navigation.prevEl = Configuration.navigation.prevEl;
}
}
this.UserConfig = Configuration
this.init()
}
// 类的方法
Swiper.prototype = {
init: function () {
this.SetWrapperWidth();
this.defaultConf.config.auto ? this.AutoPlay() : '';
this.initSwiperSlide()
},
// 设置swiper-slide父类的宽度
SetWrapperWidth: function () {
// 计算swiper-slide的宽度
this.slideArr.forEach(v => v.style.width = `${this.f}px`)
this.$(this.defaultConf.wrapper).style = `
width: ${this.f * this.slideArr.length}px;
left: -${this.f * this.defaultConf.config.initialSlide}px;
transition: all ease ${this.defaultConf.config.speed / 1000}s;
cursor: ${this.defaultConf.config.grabCursor ? 'pointer' : ''} ;
`
},
/**
* 注册移动端滑动
*/
initSwiperSlide: function () {
var fa = this.$(this.defaultConf.ParentElement),
startX = 0,
startY = 0;
fa.addEventListener('touchstart', function (e) {
e.stopPropagation()
startX = e.targetTouches[0].pageX
startY = e.targetTouches[0].pageY
})
var getDirection = function (startx, starty, endx, endy) {
// 获得角度
var getAngle = function(angx, angy) {
return Math.atan2(angy, angx) * 180 / Math.PI;
};
var angx = endx - startx;
var angy = endy - starty;
var result = 0;
// 如果滑动距离太短
if (Math.abs(angx) < 2 && Math.abs(angy) < 2) {
return result;
}
var angle = getAngle(angx, angy);
if (angle >= -135 && angle <= -45) {
result = 1;
} else if (angle > 45 && angle < 135) {
result = 2;
} else if ((angle >= 135 && angle <= 180) || (angle >= -180 && angle < -135)) {
result = 3;
} else if (angle >= -45 && angle <= 45) {
result = 4;
}
return result;
}
fa.addEventListener('touchmove', (e) => {
e.stopPropagation()
var endX = e.changedTouches[0].pageX;
var endY = e.changedTouches[0].pageY;
var direction = getDirection(startX, startY, endX, endY);
if (direction == 3 || direction == 4) {
var x = parseInt(endX - startX) - 40
this.$(this.defaultConf.wrapper).style.webkitTransform = `translate3d(${x}px,0px,0px)`;
}
});
fa.addEventListener('touchend', (e) => {
e.stopPropagation()
var endX = e.changedTouches[0].pageX;
var endY = e.changedTouches[0].pageY;
var direction = getDirection(startX, startY, endX, endY);
switch (direction) {
case 0:
console.log("未滑动！");
break;
case 1:
console.log("向上！")
break;
case 2:
console.log("向下！")
break;
case 3:
this.$(this.defaultConf.wrapper).style.webkitTransform = `translate3d(0px,0px,0px)`;
this.animation(-this.f)
this.CallMethods()
this.UserConfig.pagination && this.ChangeDotActive()
console.log("向左！")
break;
case 4:
this.$(this.defaultConf.wrapper).style.webkitTransform = `translate3d(0px,0px,0px)`;
this.animation(this.f)
this.CallMethods()
this.UserConfig.pagination && this.ChangeDotActive()
console.log("向右滑动");
break;
default:
}
})
},
CallMethods() {
if (this.UserConfig.hasOwnProperty("on")) {
var TotalLeft = Math.abs(parseInt(this.$(this.defaultConf.wrapper).style.left));
index = TotalLeft / this.f;
// 实现调用用户传入的方法，返回下标给用户
this.UserConfig.on && this.UserConfig.on.slideChangeTransitionStart(index)
}
},
// 生成小圆点
RenderDot: function () {
this.slideArr.forEach((v, i) => {
this.$(this.defaultConf.pagination.el).innerHTML +=
`
<div class="swiper-dot ${i == 0 ? 'swiper-active' : ''}"></div>
`
});
var Dot = this._(`${this.defaultConf.pagination.el} .swiper-dot`);
Dot.forEach((v, i) => {
v.onclick = () => {
this.UserConfig.pagination && this.ChangeDotActive(i)
this.$(this.defaultConf.wrapper).style.left = `-${i * this.f}px`;
}
})
},
// 渲染左右前进后退按钮
RenderNavigation: function () {
var prev = this.$(this.defaultConf.navigation.prevEl);
var next = this.$(this.defaultConf.navigation.nextEl);
prev.innerText = "<";
next.innerText = ">";
this.BindNavigationClick(prev, next)
},
// 为上一页下一页按钮绑定切换事件
BindNavigationClick() {
// var a = this
// 下一页
this.$(this.defaultConf.navigation.nextEl).onclick = () => {
this.animation(-this.f)
this.UserConfig.pagination && this.ChangeDotActive()
}
// 上一页
this.$(this.defaultConf.navigation.prevEl).onclick = () => {
this.animation(this.f)
this.UserConfig.pagination && this.ChangeDotActive()
}
},
// 切换动画
animation(offset) {
var swiperWrapper = this.$(this.defaultConf.wrapper);
var y = parseInt(swiperWrapper.style.left) + offset,
max = -(this.f * (this.slideArr.length - 1));
// 如果时最后一张图
if (y < max) {
if (this.defaultConf.config.loop) {
swiperWrapper.style.left = "0px";
} else if (this.defaultConf.config.auto) {
this.defaultConf.reverse = true
this.animation(this.f)
}
return;
// 判断是不是第一张图
} else if (y > 0) {
if (this.defaultConf.config.loop == false && this.defaultConf.config.auto) {
this.defaultConf.reverse = false
swiperWrapper.style.left = `${y - this.f * 2}px`
}
if (this.defaultConf.config.loop) {
swiperWrapper.style.left = `${max}px`
}
return
} else {
if (this.defaultConf.config.loop == false
&& this.defaultConf.config.auto
&& this.defaultConf.reverse) {
swiperWrapper.style.left = `${y}px`
} else {
swiperWrapper.style.left = `${y}px`
}
}
},
ChangeDotActive(type = null) {
var Dot = this._(`${this.defaultConf.pagination.el} .swiper-dot`);
var index = "";
if (type == null) {
var TotalLeft = Math.abs(parseInt(this.$(this.defaultConf.wrapper).style.left));
index = TotalLeft / this.f;
} else {
index = type;
}
// 实现调用用户传入的方法，返回下标给用户
this.CallMethods()
// 清除所有的激活样式
Dot.forEach(val => val.className = "swiper-dot");
// 为你点击的li加激活样式
Dot[index].className = "swiper-dot swiper-active";
},
AutoPlay() {
this.defaultConf.timer = setInterval(() => {
if (this.defaultConf.config.loop == false
&& this.defaultConf.config.auto
&& this.defaultConf.reverse) {
this.animation(this.f)
} else {
this.animation(-this.f)
}
this.UserConfig.pagination && this.ChangeDotActive()
}, this.defaultConf.config.time * 1000)
this.$(this.defaultConf.ParentElement).onmouseover = function () {
clearInterval(this.defaultConf.timer)
}
this.$(this.defaultConf.ParentElement).onmouseout = () => {
this.AutoPlay()
}
},
// 通过js调用此方法，实现轮播图的切换
slideTo(index) {
this.$(this.defaultConf.wrapper).style.left = `-${index * this.f}px`;
this.UserConfig.pagination && this.ChangeDotActive()
},
$: function (className) {
return document.querySelector(className)
},
_: function (className) {
return document.querySelectorAll(className)
}
}
window.swiper = Swiper
})()