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- /**
- @Name:layui.util 工具集
- @Author:贤心
- @License:MIT
-
- */
- layui.define('jquery', function(exports){
- "use strict";
-
- var $ = layui.$
-
- //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*8){
- 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*2){ //2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){
- var that = this
- ,date = new Date(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())
- ];
- 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]);
- }
-
- //防 xss 攻击
- ,escape: function(html){
- return String(html || '').replace(/&(?!#?[a-zA-Z0-9]+;)/g, '&')
- .replace(/</g, '<').replace(/>/g, '>')
- .replace(/'/g, ''').replace(/"/g, '"');
- }
-
- //批量事件
- ,event: function(attr, obj, eventType){
- obj = util.event[attr] = $.extend(true, util.event[attr], obj) || {};
- $('body').on(eventType || 'click', '*['+ attr +']', function(){
- var othis = $(this)
- ,key = othis.attr(attr);
- obj[key] && obj[key].call(this, othis);
- });
- }
- };
-
- //监听 DOM 尺寸变化,该创意来自:http://benalman.com/projects/jquery-resize-plugin/
- !function(a,b,c){"$: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);
- });
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