jQuery无缝滚动轮播插件
分类： 解决问题 5855 4
前言
在平时写特效的时候，喜欢把一些东西封装成一个插件，方便下次使用，不喜欢在特效上边用插件，除非是特别复杂的特效，所以就自己写一下
CDN地址：https://upyun.xuanmo.xin/js/jquery.seamlessBanner.min.js
布局说明、结构代码示例
banner图片列表：使用浮动，js会自动计算图片列表容器的宽度
banner按钮容器：使用定位设置left值为50%；js自动计算像左边的偏移量
示例代码
<!--
html结构说明，就拿下边的结构解释：
.banner为整个banner区域的容器
.banner-wrap为图片列表容器，不需要设置宽度，给子级元素设置好浮动js计算宽度
.banner-list为图片列表
.banner-btn-wrap按钮切换的容器
.banner-arrow-left左边切换按钮
.banner-arrow-right右边切换按钮
-->
<div id="banenr" class="banner">
<ul class="banner-wrap clearfix">
<li class="banner-list">
<img src="http://file.xuanmo.xin/TT.jpg" width="100%" height="100%" alt="">
</li>
<li class="banner-list">
<img src="http://file.xuanmo.xin/T1-lg.jpg" width="100%" height="100%" alt="">
</li>
<li class="banner-list">
<img src="http://file.xuanmo.xin/T2-lg.jpg" width="100%" height="100%" alt="">
</li>
</ul>
<!-- banner按钮容器 -->
<ul class="banner-btn-wrap"></ul>
<!-- banner切换箭头 -->
<i class="arrow-btn banner-arrow-left"><</i>
<i class="arrow-btn banner-arrow-right">></i>
</div>
js封装插件部分
// 默认参数
var init = {
// 是否自动切换
autoBanner: false,
// 是否开启移动端滑动切换
touchEvent: true,
// 自动轮播间隔时间
time: 5000,
// 每张图片过渡时间
transition: 1000,
// 运动曲线
easing: 'jswing',
// 上一张按钮
arrowLeftBtn(el) {
return el.siblings('.banner-arrow-left')
},
// 下一张按钮
arrowRightBtn(el) {
return el.siblings('.banner-arrow-right')
}
}
(function ($) {
function Banner(el, options) {
this.bannerWrap = el;
this.bannerList = el.children();
this.bannerBtnWrap = options.bannerBtnWrap || el.siblings('.banner-btn-wrap');
this.bannerBtn = this.bannerBtnWrap.children();
this.arrowLeftBtn = typeof options.arrowLeftBtn == 'function' ? options.arrowLeftBtn.call(this, el) : options.arrowLeftBtn;
this.arrowRightBtn = typeof options.arrowRightBtn == 'function' ? options.arrowRightBtn.call(this, el) : options.arrowRightBtn;
this.nTime = options.time;
this.nTransitionTime = options.transition;
this.nWindowWidth = options.wrapWidth || el.parent().width();
this.bAutoBanner = options.autoBanner;
this.bTouchEvent = options.touchEvent;
this.n = 1;
this.x = 0;
this._x = 0;
this.oTimer = null;
this.easing = options.easing;
}
Banner.prototype = {
constrctor: Banner,
// 初始化轮播
init: function init() {
var This = this;
// 生成banner按钮
This.bannerList.each(function () {
$(this).width(This.nWindowWidth);
This.bannerBtnWrap.append('');
});
// 拷贝第一张和最后一张分别到第一张前面和最后一张后边
This.bannerList.first().before(This.bannerList.last().clone().addClass('clone'));
This.bannerList.last().after(This.bannerList.first().clone().addClass('clone'));
// 重新获取banner
This.bannerList = This.bannerWrap.children();
// 获取banner按钮
This.bannerBtn = $('li', This.bannerBtnWrap);
// banner盒子计算宽度
This.bannerWrap.css({
width: This.bannerList.length * This.nWindowWidth + 'px',
marginLeft: This.n * -This.nWindowWidth + 'px'
});
// banner按钮盒子计算宽度
This.bannerBtnWrap.css({
width: This.bannerBtn.length * This.bannerBtn.outerWidth(true) + 'px',
marginLeft: function marginLeft() {
return $(this).width() / -2 + 'px';
}
}).children('li:eq(0)').addClass('on');
// 是否自动轮播
This.bAutoBanner && This.autoBanner(this);
This.resize(this).move(this).stop(this);
},
// 窗口发生改变改变轮播宽度
resize: function resize(This) {
$(window).on('resize', function () {
This.nWindowWidth = This.bannerWrap.parent().width();
This.bannerList.each(function () {
$(this).width(This.nWindowWidth);
});
This.bannerWrap.css({
width: This.bannerList.length * This.nWindowWidth + 'px',
marginLeft: This.n * -This.nWindowWidth + 'px'
});
});
return This;
},
// banner切换
move: function move(This) {
// 按钮切换
This.bannerBtn.mouseenter(function () {
if (!This.bannerWrap.is(':animated')) {
This.n = $(this).index() + 1;
This.bannerBtn.eq(This.n - 1).addClass('on').siblings().removeClass('on');
This.bannerWrap.animate({
marginLeft: This.n * -This.nWindowWidth + 'px'
}, {
duration: This.nTransitionTime,
easing: This.easing
});
}
});
// 向左切换
This.arrowLeftBtn.click(function () {
if (!This.bannerWrap.is(':animated')) {
This.n--;
if (This.n < 0) {
This.n = This.bannerList.length - 3;
This.bannerWrap.css('marginLeft', (This.bannerList.length - 2) * -This.nWindowWidth + 'px');
}
This.bannerBtn.eq(This.n - 1).addClass('on').siblings().removeClass('on');
This.bannerWrap.animate({
marginLeft: This.n * -This.nWindowWidth + 'px'
}, {
duration: This.nTransitionTime,
easing: This.easing
});
}
});
// 向右切换
This.arrowRightBtn.click(function () {
if (!This.bannerWrap.is(':animated')) {
This.n++;
if (This.n >= This.bannerList.length - 1) {
This.n = 1;
This.bannerWrap.css('marginLeft', (This.n - 1) * -This.nWindowWidth + 'px');
}
This.bannerBtn.eq(This.n - 1).addClass('on').siblings().removeClass('on');
This.bannerWrap.animate({
marginLeft: This.n * -This.nWindowWidth + 'px'
}, {
duration: This.nTransitionTime,
easing: This.easing
});
}
});
// 移动端无缝滚动
This.bTouchEvent && This.bannerWrap.on('touchstart', function (e) {
This.x = e.originalEvent.touches[0].pageX;
}).on('touchmove', function (e) {
// e.preventDefault();
This._x = e.originalEvent.touches[0].pageX;
var differ = This.x - This._x > 0 ? 1 : 0;
if (differ) {
// 向左滑动
if (!$(this).is(':animated')) {
This.n++;
if (This.n >= This.bannerList.length - 1) {
This.n = 1;
$(this).css('marginLeft', (This.n - 1) * -This.nWindowWidth + 'px');
}
This.bannerBtn.eq(This.n - 1).addClass('on').siblings().removeClass('on');
$(this).animate({
marginLeft: This.n * -This.nWindowWidth + 'px'
}, {
duration: This.nTransitionTime,
easing: This.easing
});
}
} else {
// 向右滑动
if (!$(this).is(':animated')) {
This.n--;
if (This.n < 0) {
This.n = This.bannerList.length - 3;
$(this).css('marginLeft', (This.bannerList.length - 2) * -This.nWindowWidth + 'px');
}
This.bannerBtn.eq(This.n - 1).addClass('on').siblings().removeClass('on');
$(this).animate({
marginLeft: This.n * -This.nWindowWidth + 'px'
}, {
duration: This.nTransitionTime,
easing: This.easing
});
}
}
});
return this;
},
// 自动轮播
autoBanner: function autoBanner(This) {
This.oTimer = setInterval(function () {
This.arrowRightBtn.click();
}, This.nTime);
return this;
},
// 鼠标移入停止自动轮播
stop: function stop(This) {
This.bannerWrap.parent().hover(function () {
clearInterval(This.oTimer);
}, function () {
This.bAutoBanner && This.autoBanner(This);
});
}
// 默认参数
};var init = {
autoBanner: false,
touchEvent: true,
time: 5000,
transition: 1000,
easing: 'jswing',
arrowLeftBtn: function arrowLeftBtn(el) {
return el.siblings('.banner-arrow-left');
},
arrowRightBtn: function arrowRightBtn(el) {
return el.siblings('.banner-arrow-right');
}
};
$.fn.seamlessBanner = function (options) {
if (this.children().length > 1) new Banner(this, $.extend(init, options)).init();
};
$.easing['jswing'] = $.easing['swing'];
$.extend($.easing, {
def: 'easeOutQuad',
swing: function swing(x, t, b, c, d) {
return $.easing[$.easing.def](x, t, b, c, d);
},
easeInQuad: function easeInQuad(x, t, b, c, d) {
return c * (t /= d) * t + b;
},
easeOutQuad: function easeOutQuad(x, t, b, c, d) {
return -c * (t /= d) * (t - 2) + b;
},
easeInOutQuad: function easeInOutQuad(x, t, b, c, d) {
if ((t /= d / 2) < 1) return c / 2 * t * t + b;
return -c / 2 * (--t * (t - 2) - 1) + b;
},
easeInCubic: function easeInCubic(x, t, b, c, d) {
return c * (t /= d) * t * t + b;
},
easeOutCubic: function easeOutCubic(x, t, b, c, d) {
return c * ((t = t / d - 1) * t * t + 1) + b;
},
easeInOutCubic: function easeInOutCubic(x, t, b, c, d) {
if ((t /= d / 2) < 1) return c / 2 * t * t * t + b;
return c / 2 * ((t -= 2) * t * t + 2) + b;
},
easeInQuart: function easeInQuart(x, t, b, c, d) {
return c * (t /= d) * t * t * t + b;
},
easeOutQuart: function easeOutQuart(x, t, b, c, d) {
return -c * ((t = t / d - 1) * t * t * t - 1) + b;
},
easeInOutQuart: function easeInOutQuart(x, t, b, c, d) {
if ((t /= d / 2) < 1) return c / 2 * t * t * t * t + b;
return -c / 2 * ((t -= 2) * t * t * t - 2) + b;
},
easeInQuint: function easeInQuint(x, t, b, c, d) {
return c * (t /= d) * t * t * t * t + b;
},
easeOutQuint: function easeOutQuint(x, t, b, c, d) {
return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
},
easeInOutQuint: function easeInOutQuint(x, t, b, c, d) {
if ((t /= d / 2) < 1) return c / 2 * t * t * t * t * t + b;
return c / 2 * ((t -= 2) * t * t * t * t + 2) + b;
},
easeInSine: function easeInSine(x, t, b, c, d) {
return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
},
easeOutSine: function easeOutSine(x, t, b, c, d) {
return c * Math.sin(t / d * (Math.PI / 2)) + b;
},
easeInOutSine: function easeInOutSine(x, t, b, c, d) {
return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
},
easeInExpo: function easeInExpo(x, t, b, c, d) {
return t == 0 ? b : c * Math.pow(2, 10 * (t / d - 1)) + b;
},
easeOutExpo: function easeOutExpo(x, t, b, c, d) {
return t == d ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
},
easeInOutExpo: function easeInOutExpo(x, t, b, c, d) {
if (t == 0) return b;
if (t == d) return b + c;
if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b;
},
easeInCirc: function easeInCirc(x, t, b, c, d) {
return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
},
easeOutCirc: function easeOutCirc(x, t, b, c, d) {
return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
},
easeInOutCirc: function easeInOutCirc(x, t, b, c, d) {
if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b;
return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
},
easeInElastic: function easeInElastic(x, t, b, c, d) {
var s = 1.70158;
var p = 0;
var a = c;
if (t == 0) return b;
if ((t /= d) == 1) return b + c;
if (!p) p = d * .3;
if (a < Math.abs(c)) {
a = c;
var s = p / 4;
} else var s = p / (2 * Math.PI) * Math.asin(c / a);
return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
},
easeOutElastic: function easeOutElastic(x, t, b, c, d) {
var s = 1.70158;
var p = 0;
var a = c;
if (t == 0) return b;
if ((t /= d) == 1) return b + c;
if (!p) p = d * .3;
if (a < Math.abs(c)) {
a = c;
var s = p / 4;
} else var s = p / (2 * Math.PI) * Math.asin(c / a);
return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b;
},
easeInOutElastic: function easeInOutElastic(x, t, b, c, d) {
var s = 1.70158;
var p = 0;
var a = c;
if (t == 0) return b;
if ((t /= d / 2) == 2) return b + c;
if (!p) p = d * (.3 * 1.5);
if (a < Math.abs(c)) {
a = c;
var s = p / 4;
} else var s = p / (2 * Math.PI) * Math.asin(c / a);
if (t < 1) return -.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * .5 + c + b;
},
easeInBack: function easeInBack(x, t, b, c, d, s) {
if (s == undefined) s = 1.70158;
return c * (t /= d) * t * ((s + 1) * t - s) + b;
},
easeOutBack: function easeOutBack(x, t, b, c, d, s) {
if (s == undefined) s = 1.70158;
return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
},
easeInOutBack: function easeInOutBack(x, t, b, c, d, s) {
if (s == undefined) s = 1.70158;
if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= 1.525) + 1) * t - s)) + b;
return c / 2 * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2) + b;
},
easeInBounce: function easeInBounce(x, t, b, c, d) {
return c - $.easing.easeOutBounce(x, d - t, 0, c, d) + b;
},
easeOutBounce: function easeOutBounce(x, t, b, c, d) {
if ((t /= d) < 1 / 2.75) {
return c * (7.5625 * t * t) + b;
} else if (t < 2 / 2.75) {
return c * (7.5625 * (t -= 1.5 / 2.75) * t + .75) + b;
} else if (t < 2.5 / 2.75) {
return c * (7.5625 * (t -= 2.25 / 2.75) * t + .9375) + b;
} else {
return c * (7.5625 * (t -= 2.625 / 2.75) * t + .984375) + b;
}
},
easeInOutBounce: function easeInOutBounce(x, t, b, c, d) {
if (t < d / 2) return $.easing.easeInBounce(x, t * 2, 0, c, d) * .5 + b;
return $.easing.easeOutBounce(x, t * 2 - d, 0, c, d) * .5 + c * .5 + b;
}
});
})(jQuery);
插件调用
$('.banner-wrap').seamlessBanner();
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