slider.js
6.91 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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/*
* detail页图片移动插件
* author:liuyue
* date:2015-01-07
*/
var $ = require("jquery");
require('./lazyloadImage');
;
(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.timer = null;
this.width = this.$lis.width();
this.index = 0;
this.ctrlIndex = 0;
this.ctrl = this.options.pageCtrl;
this.ctrlEle = this.options.pageCtrl.children();
this.ctrlLen = this.ctrlEle.length;
this.ctrlWidth = this.ctrlEle.width() + parseInt(this.ctrlEle.eq(1).css("marginLeft"));
this.ctrlMaxLeft = this.ctrl.width() - this.ctrl.parent().width() - parseInt(this.ctrlEle.eq(1).css("marginLeft"));
this.excessWidth = this.ctrlMaxLeft - this.ctrlWidth * (this.ctrlLen - this.options.ctrlShowNum);
this.init();
};
Slider.DEFAULTS = {
pageCtrl: '',
ctrlShowNum: 6,
prevBtn: $(".detail-slide-ctrl-prev"),
nextBtn: $(".detail-slide-ctrl-next")
};
Slider.prototype = {
init: function() {
this.ctrlEle.eq(0).addClass("current");
this.setWidth();
if (this.options.autoPlay) {
this.play();
}
this.cloneDom();
this.bindEvent();
this.addIndex();
if (this.ctrlLen <= this.options.ctrlShowNum) {
this.options.prevBtn.hide();
this.options.nextBtn.hide();
}
},
setWidth: function() {
this.$element.width(this.len * this.width);
this.options.pageCtrl.width(this.ctrlWidth * this.ctrlLen);
this.ctrlMaxLeft = this.ctrl.width() - this.ctrl.parent().width() - parseInt(this.ctrlEle.eq(1).css("marginLeft"));
this.excessWidth = this.ctrlMaxLeft - this.ctrlWidth * (this.ctrlLen - this.options.ctrlShowNum);
},
cloneDom: function() {
if (this.$element.children().length > this.len) return;
},
addIndex: function() {
this.options.pageCtrl.children().each(function(i, value) {
$(this).attr("index", i);
})
},
bindEvent: function() {
var _this = this;
this.options.pageCtrl.children().on("click", function() {
if (_this.$element.is(':animated') || $(this).attr('class') == 'current') {
return;
}
var myIndex = parseInt($(this).attr("index"));
var offset = -_this.width * (myIndex - _this.index);
_this.animate(offset);
clearTimeout(_this.timer);
_this.index = myIndex;
if (_this.options.autoPlay) {
_this.play();
}
_this.showButton();
var left = Math.abs(parseInt($(".detail-slide-ctrl-tabs").css("left")));
if ($(this).index() == _this.options.ctrlShowNum - 1 + parseInt(left / _this.ctrlWidth) && left < _this.ctrlMaxLeft) {
_this.options.nextBtn.trigger("click.next");
} else if ($(this).index() == parseInt(left / _this.ctrlWidth) && left > 0) {
_this.options.prevBtn.trigger("click.prev");
}
});
this.options.prevBtn.on("click.prev", function() {
if (_this.options.pageCtrl.is(':animated')) {
return;
}
_this.prev();
});
this.options.nextBtn.on("click.next", function() {
if (_this.options.pageCtrl.is(':animated')) {
return;
}
_this.next();
});
},
prev: function() {
var excessWidth = this.excessWidth;
var maxCtrlIndex = this.ctrlLen - this.options.ctrlShowNum;
this.ctrlIndex--;
if (this.ctrlIndex < 0) {
this.ctrlIndex = maxCtrlIndex;
}
if (this.ctrlIndex == 0) {
this.options.pageCtrl.stop().animate({
"left": 0
});
} else {
this.options.pageCtrl.stop().animate({
"left": -this.ctrlWidth * this.ctrlIndex - excessWidth
});
}
},
next: function() {
var maxCtrlIndex = this.ctrlLen - this.options.ctrlShowNum;
if (this.ctrlIndex < maxCtrlIndex) {
this.ctrlIndex++;
} else {
this.ctrlIndex = 0;
}
if (this.ctrlIndex == maxCtrlIndex && this.ctrlMaxLeft > 0) {
this.options.pageCtrl.stop().animate({
"left": -this.ctrlMaxLeft
});
} else {
this.options.pageCtrl.stop().animate({
"left": -this.ctrlWidth * this.ctrlIndex
});
}
},
showButton: function() {
this.options.pageCtrl.children().eq(this.index).addClass('current').siblings().removeClass('current');
},
animate: function(offset) {
var left = parseInt(this.$element.css('left')) + offset;
var _this = this;
if (offset > 0) {
offset = '+=' + offset;
} else {
offset = '-=' + Math.abs(offset);
}
this.$element.stop().animate({
'left': offset
}, 300);
_this.$element.find(".lazy").lazyload();
},
//屏幕改变大小时重新计算
resize: function() {
this.width = this.$lis.width();
this.ctrlWidth = this.ctrlEle.width() + parseInt(this.ctrlEle.eq(1).css("marginLeft"));
this.setWidth();
this.$element.css({
'left': -this.index * this.width
});
if (this.ctrlIndex == 0) return;
this.options.pageCtrl.css({
"left": -this.ctrlWidth * this.ctrlIndex - this.excessWidth
});
}
}
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);