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Authored by biao
Commit f69b82108d247b3261b649e0e46c9e8fc6417a41 1 parent fe2b0069

add slider.js

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Showing 1 changed file with 173 additions and 0 deletions
/**
* 首页banner轮播
* @author: liuyue(yue.liu@yoho.cn)
* @date: 2015/12/04
*/
var $ = require('yoho-jquery'),
lazyLoad = require('yoho-jquery-lazyload');
(function() {
var Slider = function(element, options) {
this.$element = $(element);
this.options = $.extend({}, $.fn.slider.defaults, options);
this.bigItem = this.$element.find('.slide-wrapper').find('li');
this.smallItem = null;
this.len = this.bigItem.size();
this.index = 0;
this.timer = null;
this.init();
};
Slider.prototype = {
init: function() {
if (!this.$element) {
return;
}
if (this.len <= 1) {
lazyLoad(this.$element.find('img.lazy'));
return;
}
if (this.options.pagination) {
this.smallItem = $(this.options.pagination).find('li');
} else {
this._createPage();
}
if (this.options.orient) {
this._createOrient();
}
this._slideShow();
this._bindEvent();
this._autoplay();
},
_createOrient: function() {
var orientHtml = '<div class="slide-switch">' +
'<a class="prev" href="javascript:;"><span class="iconfont">&#xe609;</span></a>' +
'<a class="next" href="javascript:;"><span class="iconfont">&#xe608;</span></a>' +
'</div>';
if (this.$element.find('.slide-switch').length > 0) {
return;
}
this.$element.append(orientHtml);
},
_createPage: function() {
var pageHtml = '<div class="slide-pagination"><div class="slide-pagination-inner">' +
'<div class="slide-shade"></div><div class="slide-pagination-last">',
i = 0;
if (this.len <= 1) {
return;
}
for (i = 0; i < this.len; i++) {
pageHtml += '<span></span>';
}
pageHtml += '</div></div></div>';
this.$element.append($(pageHtml));
this.smallItem = this.$element.find('.slide-pagination-inner span');
},
_bindEvent: function() {
var that = this;
this.$element.find('.slide-switch').on('click', '.next', function() {
that._nextSlide();
clearInterval(that.timer);
that.timer = setInterval(function() {
that._nextSlide();
}, that.options.time);
}).on('click', '.prev', function() {
that._prevSlide();
clearInterval(that.timer);
that.timer = setInterval(function() {
that._nextSlide();
}, that.options.time);
});
this.smallItem.on('mouseenter', function() {
that.index = $(this).index();
clearInterval(that.timer);
that._slideShow();
}).on('mouseleave', function() {
that._autoplay();
});
this.$element.on('mouseenter', function() {
$(this).find('.slide-switch').addClass('show');
}).on('mouseleave', function() {
$(this).find('.slide-switch').removeClass('show');
});
},
_nextSlide: function() {
if (this.index === this.len - 1) {
this.index = 0;
} else {
this.index++;
}
this._slideShow();
},
_prevSlide: function() {
if (this.index === 0) {
this.index = this.len - 1;
} else {
this.index--;
}
this._slideShow();
},
_slideShow: function() {
var $img = this.bigItem.eq(this.index).find('img.lazy');
// 未加载图片的及时显示
if ($img.attr('src') !== $img.data('original')) {
lazyLoad($img, {
event: 'sporty'
});
$img.trigger('sporty');
}
this.smallItem.eq(this.index).addClass('focus').siblings().removeClass('focus');
this.bigItem.eq(this.index).show().stop().animate({
opacity: 1
}, function() {
// 修正IE下切换时文字会重叠的问题
$(this).find('.slide-tips > p').removeClass('hide');
}).siblings().stop().animate({
opacity: 0
}, function() {
$(this).hide().find('.slide-tips > p').addClass('hide');
});
},
_autoplay: function() {
var that = this;
clearInterval(this.timer);
this.timer = setInterval(function() {
that._nextSlide();
}, this.options.time);
}
};
$.fn.slider = function(option) {
return this.each(function() {
var $this = $(this),
data = $this.data('Slider'),
options = typeof option === 'object' && option;
if (!data) {
$this.data('Slider', (data = new Slider(this, options)));
}
if (typeof option === 'string') {
data[option]();
}
});
};
$.fn.slider.Constructor = Slider;
$.fn.slider.defaults = {
time: 5000,
orient: true, // 左右切换箭头的显示
pagination: null
};
}($));
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