File: /www/wwwroot//sr.dfhtcs.com/layui/modules/util.js
/*!
* util 工具组件
*/
layui.define('jquery', function(exports){
"use strict";
var $ = layui.$
,hint = layui.hint()
//外部接口
,util = {
//固定块
fixbar: function(options){
var ELEM = 'layui-fixbar', TOP_BAR = 'layui-fixbar-top'
,dom = $(document), body = $('body')
,is, timer;
options = $.extend({
showHeight: 200 //出现TOP的滚动条高度临界值
}, options);
options.bar1 = options.bar1 === true ? '' : options.bar1;
options.bar2 = options.bar2 === true ? '' : options.bar2;
options.bgcolor = options.bgcolor ? ('background-color:' + options.bgcolor) : '';
var icon = [options.bar1, options.bar2, ''] //图标：信息、问号、TOP
,elem = $(['<ul class="'+ ELEM +'">'
,options.bar1 ? '<li class="layui-icon" lay-type="bar1" style="'+ options.bgcolor +'">'+ icon[0] +'</li>' : ''
,options.bar2 ? '<li class="layui-icon" lay-type="bar2" style="'+ options.bgcolor +'">'+ icon[1] +'</li>' : ''
,'<li class="layui-icon '+ TOP_BAR +'" lay-type="top" style="'+ options.bgcolor +'">'+ icon[2] +'</li>'
,'</ul>'].join(''))
,topBar = elem.find('.'+TOP_BAR)
,scroll = function(){
var stop = dom.scrollTop();
if(stop >= (options.showHeight)){
is || (topBar.show(), is = 1);
} else {
is && (topBar.hide(), is = 0);
}
};
if($('.'+ ELEM)[0]) return;
typeof options.css === 'object' && elem.css(options.css);
body.append(elem), scroll();
//bar点击事件
elem.find('li').on('click', function(){
var othis = $(this), type = othis.attr('lay-type');
if(type === 'top'){
$('html,body').animate({
scrollTop : 0
}, 200);
}
options.click && options.click.call(this, type);
});
//Top显示控制
dom.on('scroll', function(){
clearTimeout(timer);
timer = setTimeout(function(){
scroll();
}, 100);
});
}
//倒计时
,countdown: function(endTime, serverTime, callback){
var that = this
,type = typeof serverTime === 'function'
,end = new Date(endTime).getTime()
,now = new Date((!serverTime || type) ? new Date().getTime() : serverTime).getTime()
,count = end - now
,time = [
Math.floor(count/(1000*60*60*24)) //天
,Math.floor(count/(1000*60*60)) % 24 //时
,Math.floor(count/(1000*60)) % 60 //分
,Math.floor(count/1000) % 60 //秒
];
if(type) callback = serverTime;
var timer = setTimeout(function(){
that.countdown(endTime, now + 1000, callback);
}, 1000);
callback && callback(count > 0 ? time : [0,0,0,0], serverTime, timer);
if(count <= 0) clearTimeout(timer);
return timer;
}
//某个时间在当前时间的多久前
,timeAgo: function(time, onlyDate){
var that = this
,arr = [[], []]
,stamp = new Date().getTime() - new Date(time).getTime();
//返回具体日期
if(stamp > 1000*60*60*24*31){
stamp = new Date(time);
arr[0][0] = that.digit(stamp.getFullYear(), 4);
arr[0][1] = that.digit(stamp.getMonth() + 1);
arr[0][2] = that.digit(stamp.getDate());
//是否输出时间
if(!onlyDate){
arr[1][0] = that.digit(stamp.getHours());
arr[1][1] = that.digit(stamp.getMinutes());
arr[1][2] = that.digit(stamp.getSeconds());
}
return arr[0].join('-') + ' ' + arr[1].join(':');
}
//30天以内，返回“多久前”
if(stamp >= 1000*60*60*24){
return ((stamp/1000/60/60/24)|0) + '天前';
} else if(stamp >= 1000*60*60){
return ((stamp/1000/60/60)|0) + '小时前';
} else if(stamp >= 1000*60*3){ //3分钟以内为：刚刚
return ((stamp/1000/60)|0) + '分钟前';
} else if(stamp < 0){
return '未来';
} else {
return '刚刚';
}
}
//数字前置补零
,digit: function(num, length){
var str = '';
num = String(num);
length = length || 2;
for(var i = num.length; i < length; i++){
str += '0';
}
return num < Math.pow(10, length) ? str + (num|0) : num;
}
//转化为日期格式字符
,toDateString: function(time, format){
//若 null 或空字符，则返回空字符
if(time === null || time === '') return '';
var that = this
,date = new Date(function(){
if(!time) return;
return isNaN(time) ? time : (typeof time === 'string' ? parseInt(time) : time)
}() || new Date())
,ymd = [
that.digit(date.getFullYear(), 4)
,that.digit(date.getMonth() + 1)
,that.digit(date.getDate())
]
,hms = [
that.digit(date.getHours())
,that.digit(date.getMinutes())
,that.digit(date.getSeconds())
];
if(!date.getDate()) return hint.error('Invalid Msec for "util.toDateString(Msec)"'), '';
format = format || 'yyyy-MM-dd HH:mm:ss';
return format.replace(/yyyy/g, ymd[0])
.replace(/MM/g, ymd[1])
.replace(/dd/g, ymd[2])
.replace(/HH/g, hms[0])
.replace(/mm/g, hms[1])
.replace(/ss/g, hms[2]);
}
//转义 html，防 xss 攻击
,escape: function(html){
return String(html || '').replace(/&(?!#?[a-zA-Z0-9]+;)/g, '&')
.replace(/</g, '<').replace(/>/g, '>')
.replace(/'/g, ''').replace(/"/g, '"');
}
//还原转义的 html
,unescape: function(str){
return String(str || '').replace(/\&/g, '&')
.replace(/\</g, '<').replace(/\>/g, '>')
.replace(/\'/, '\'').replace(/\"/, '"');
}
//让指定的元素保持在可视区域
,toVisibleArea: function(options){
options = $.extend({
margin: 160 //触发动作的边界值
,duration: 200 //动画持续毫秒数
,type: 'y' //触发方向，x 水平、y 垂直
}, options);
if(!options.scrollElem[0] || !options.thisElem[0]) return;
var scrollElem = options.scrollElem //滚动元素
,thisElem = options.thisElem //目标元素
,vertical = options.type === 'y' //是否垂直方向
,SCROLL_NAME = vertical ? 'scrollTop' : 'scrollLeft' //滚动方法
,OFFSET_NAME = vertical ? 'top' : 'left' //坐标方式
,scrollValue = scrollElem[SCROLL_NAME]() //当前滚动距离
,size = scrollElem[vertical ? 'height' : 'width']() //滚动元素的尺寸
,scrollOffet = scrollElem.offset()[OFFSET_NAME] //滚动元素所处位置
,thisOffset = thisElem.offset()[OFFSET_NAME] - scrollOffet //目标元素当前的所在位置
,obj = {};
//边界满足条件
if(thisOffset > size - options.margin || thisOffset < options.margin){
obj[SCROLL_NAME] = thisOffset - size/2 + scrollValue
scrollElem.animate(obj, options.duration);
}
}
//批量事件
,event: function(attr, obj, eventType){
var _body = $('body');
eventType = eventType || 'click';
//记录事件回调集合
obj = util.event[attr] = $.extend(true, util.event[attr], obj) || {};
//清除委托事件
util.event.UTIL_EVENT_CALLBACK = util.event.UTIL_EVENT_CALLBACK || {};
_body.off(eventType, '*['+ attr +']', util.event.UTIL_EVENT_CALLBACK[attr])
//绑定委托事件
util.event.UTIL_EVENT_CALLBACK[attr] = function(){
var othis = $(this)
,key = othis.attr(attr);
(typeof obj[key] === 'function') && obj[key].call(this, othis);
};
//清除旧事件，绑定新事件
_body.on(eventType, '*['+ attr +']', util.event.UTIL_EVENT_CALLBACK[attr]);
return obj;
}
};
// DOM 尺寸变化，该创意来自：http://benalman.com/projects/jquery-resize-plugin/
/*
!function(a,b,c){"$:nomunge";function l(){f=b[g](function(){d.each(function(){var b=a(this),c=b.width(),d=b.height(),e=a.data(this,i);(c!==e.w||d!==e.h)&&b.trigger(h,[e.w=c,e.h=d])}),l()},e[j])}var f,d=a([]),e=a.resize=a.extend(a.resize,{}),g="setTimeout",h="resize",i=h+"-special-event",j="delay",k="throttleWindow";e[j]=250,e[k]=!0,a.event.special[h]={setup:function(){if(!e[k]&&this[g])return!1;var b=a(this);d=d.add(b),a.data(this,i,{w:b.width(),h:b.height()}),1===d.length&&l()},teardown:function(){if(!e[k]&&this[g])return!1;var b=a(this);d=d.not(b),b.removeData(i),d.length||clearTimeout(f)},add:function(b){function f(b,e,f){var g=a(this),h=a.data(this,i)||{};h.w=e!==c?e:g.width(),h.h=f!==c?f:g.height(),d.apply(this,arguments)}if(!e[k]&&this[g])return!1;var d;return a.isFunction(b)?(d=b,f):(d=b.handler,b.handler=f,void 0)}}}($,window);
*/
//暴露接口
exports('util', util);
});