slider.js
5.92 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/*
detail页缩略图滚动插件
author:liuyue
date:2015-05-12
*/
define('plugins/slider', function(require, exports) {
var $ = require("jquery");
;
(function(global, undefined) {
var Slider = function(element, options) {
this.options = options;
this.$element = $(element);
this.$lis = this.$element.children();
this.len = this.$lis.length;
this.index = 0;
this.overWidth = 0;
this.width = this.$lis.eq(1).outerWidth();
this.firstWidth = this.$lis.eq(0).width();
this.init();
};
Slider.DEFAULTS = {
prevBtn: '.detail-slide-ctrl-prev', //向前控制按钮类
nextBtn: '.detail-slide-ctrl-next', //向后控制按钮类
wrapClass: '.detail-slide-ctrl', //包裹运动元素的层，用于计算运动元素的left
showNum: 6 //可视元素个数
};
Slider.prototype = {
init: function() {
this.$lis.eq(0).addClass('current');
this._setWidth();
this._bindEvent();
},
_setWidth: function() {
this.$element.width(this.width * this.len);
},
_bindEvent: function() {
var that = this,
timer;
//网页改变大小时重新计算宽度
$(window).resize(function() {
that._setWidth();
}).resize();
this.$lis.on('click', function() {
if (that.$element.is(':animated') || $(this).attr('class') == 'current') return;
that.slideTo($(this).index());
})
if (this.len >= this.options.showNum) {
$(that.options.prevBtn).on('click.prev', function() {
that._prev();
});
$(that.options.nextBtn).on('click.next', function() {
that._next();
});
}
if (this.len > this.options.showNum) {
$(that.options.prevBtn).show();
$(that.options.nextBtn).show();
}
},
_animate: function(offset) {
if (this.$element.is(':animated')) return;
console.log(11);
this.$element.animate({
'left': offset
}, 300);
},
slideTo: function(index) {
var that = this,
left = Math.abs(parseInt(this.$element.css('left')));
this.$lis.eq(index).addClass('current').siblings().removeClass('current');
if (this.len < this.options.showNum) return;
if (this.$element.is(':animated') || $('.detail-slide-piclist .box').is(':animated')) return;
//console.log(index);
if (index === that.options.showNum - 1 + parseInt(left / that.width) && left < this.$element.outerWidth() - $(this.options.wrapClass).outerWidth() - this.overWidth) {
$(that.options.nextBtn).trigger("click.next");
} else if (index === 0 && left !== 0) {
$(that.options.nextBtn).trigger("click.next");
} else if (index === parseInt(left / that.$lis.eq(1).outerWidth()) && left > 0) {
$(that.options.prevBtn).trigger("click.prev");
} else if (index === that.len - 1 && left === 0) {
$(that.options.prevBtn).trigger("click.prev");
}
},
_prev: function() {
var offset;
if (this.$element.is(':animated')) return;
this.overWidth = this.width - this.firstWidth;
this.index--;
offset = -this.width * this.index;
if (offset > 0) {
offset = -(this.$element.outerWidth() - $(this.options.wrapClass).outerWidth() - this.overWidth);
if (this.len === this.options.showNum) {
this.index = 1
} else {
this.index = this.len - this.options.showNum;
}
}
this._animate(offset);
},
_next: function() {
var offset;
if (this.$element.is(':animated')) return;
this.overWidth = this.width - this.firstWidth;
this.index++;
offset = -this.width * this.index;
if (this.index >= this.len - this.options.showNum) {
offset = -(this.$element.outerWidth() - $(this.options.wrapClass).outerWidth() - this.overWidth);
}
if (parseInt(this.$element.css('left')) === -(this.$element.outerWidth() - $(this.options.wrapClass).outerWidth() - this.overWidth)) {
offset = 0;
this.index = 0;
}
console.log(offset);
this._animate(offset);
}
}
function Plugin(option, _relatedTarget) {
return this.each(function() {
var $this = $(this);
var data = $this.data('yoho.Slider');
var options = $.extend({}, Slider.DEFAULTS, $this.data(), typeof option == 'object' && option);
// 如果没有初始化，则初始化该对象，并且把该对象绑定到此元素的yoho.PicSilder属性下。
if (!data) $this.data('yoho.Slider', (data = new Slider(this, options)));
// 如果传递的options是一个字符串，则表示调用改对象的原型方法。
if (typeof option == 'string') data[option](_relatedTarget);
});
};
$.fn.slider = Plugin;
$.fn.slider.Constructor = Slider;
})(this);
});