385 lines
12 KiB
JavaScript
385 lines
12 KiB
JavaScript
/**
|
||
* util 工具组件
|
||
*/
|
||
|
||
layui.define('jquery', function(exports){
|
||
"use strict";
|
||
|
||
var $ = layui.$;
|
||
var hint = layui.hint();
|
||
|
||
// 外部接口
|
||
var util = {
|
||
// 固定块
|
||
fixbar: function(options){
|
||
var ELEM = 'layui-fixbar';
|
||
var $doc = $(document);
|
||
|
||
// 默认可选项
|
||
options = $.extend(true, {
|
||
target: 'body', // fixbar 的插入目标选择器
|
||
bars: [], // bar 信息
|
||
default: true, // 是否显示默认 bar
|
||
margin: 160, // 出现 top bar 的滚动条高度临界值
|
||
duration: 320 // top bar 等动画时长（毫秒）
|
||
}, options);
|
||
|
||
// 目标元素对象
|
||
var $target = $(options.target);
|
||
|
||
// 滚动条所在元素对象
|
||
var $scroll = options.scroll
|
||
? $(options.scroll)
|
||
: $(options.target === 'body' ? $doc : $target)
|
||
|
||
// 是否提供默认图标
|
||
if(options.default){
|
||
// 兼容旧版本的一些属性
|
||
if(options.bar1){
|
||
options.bars.push({
|
||
type: 'bar1',
|
||
icon: 'layui-icon-chat'
|
||
});
|
||
}
|
||
if(options.bar2){
|
||
options.bars.push({
|
||
type: 'bar2',
|
||
icon: 'layui-icon-help'
|
||
});
|
||
}
|
||
// 默认 top bar
|
||
options.bars.push({
|
||
type: 'top',
|
||
icon: 'layui-icon-top'
|
||
});
|
||
}
|
||
|
||
var elem = $('<ul>').addClass(ELEM);
|
||
var elemTopBar;
|
||
|
||
// 遍历生成 bars 节点
|
||
layui.each(options.bars, function(i, item){
|
||
var elemBar = $('<li class="layui-icon">');
|
||
|
||
// 设置 bar 相关属性
|
||
elemBar.addClass(item.icon).attr({
|
||
'lay-type': item.type,
|
||
'style': item.style || (options.bgcolor ? 'background-color: '+ options.bgcolor : '')
|
||
}).html(item.content);
|
||
|
||
// bar 点击事件
|
||
elemBar.on('click', function(){
|
||
var type = $(this).attr('lay-type');
|
||
if(type === 'top'){
|
||
(
|
||
options.target === 'body'
|
||
? $('html,body')
|
||
: $scroll
|
||
).animate({
|
||
scrollTop : 0
|
||
}, options.duration);
|
||
}
|
||
typeof options.click === 'function' && options.click.call(this, type);
|
||
});
|
||
|
||
// 自定义任意事件
|
||
if(layui.type(options.on) === 'object'){
|
||
layui.each(options.on, function(eventName, callback){
|
||
elemBar.on(eventName, function(){
|
||
var type = $(this).attr('lay-type');
|
||
typeof callback === 'function' && callback.call(this, type);
|
||
});
|
||
})
|
||
}
|
||
|
||
// 获得 top bar 节点
|
||
if(item.type === 'top'){
|
||
elemBar.addClass('layui-fixbar-top');
|
||
elemTopBar = elemBar;
|
||
}
|
||
|
||
elem.append(elemBar); // 插入 bar 节点
|
||
});
|
||
|
||
// 若目标元素已存在 fixbar，则移除旧的节点
|
||
$target.find('.'+ ELEM).remove();
|
||
|
||
// 向目标元素插入 fixbar 节点
|
||
typeof options.css === 'object' && elem.css(options.css);
|
||
$target.append(elem);
|
||
|
||
// top bar 的显示隐藏
|
||
if(elemTopBar){
|
||
var lock;
|
||
var setTopBar = (function setTopBar(){
|
||
var top = $scroll.scrollTop();
|
||
if(top >= options.margin){
|
||
lock || (elemTopBar.show(), lock = 1);
|
||
} else {
|
||
lock && (elemTopBar.hide(), lock = 0);
|
||
}
|
||
return setTopBar;
|
||
})();
|
||
}
|
||
|
||
// 根据 scrollbar 设置 fixbar 相关状态
|
||
var timer;
|
||
$scroll.on('scroll', function(){
|
||
if(!setTopBar) return;
|
||
clearTimeout(timer);
|
||
timer = setTimeout(function(){
|
||
setTopBar();
|
||
}, 100);
|
||
});
|
||
},
|
||
|
||
// 倒计时
|
||
countdown: function(options){
|
||
var that = this;
|
||
|
||
// 默认可选项
|
||
options = $.extend(true, {
|
||
date: new Date(),
|
||
now: new Date()
|
||
}, options);
|
||
|
||
// 兼容旧版参数
|
||
var args = arguments;
|
||
if(args.length > 1){
|
||
options.date = new Date(args[0]);
|
||
options.now = new Date(args[1]);
|
||
options.clock = args[2];
|
||
}
|
||
|
||
// 实例对象
|
||
var inst = {
|
||
options: options,
|
||
clear: function(){ // 清除计时器
|
||
clearTimeout(inst.timer);
|
||
},
|
||
reload: function(opts){ // 重置倒计时
|
||
this.clear();
|
||
$.extend(true, this.options, {
|
||
now: new Date()
|
||
}, opts);
|
||
count();
|
||
}
|
||
};
|
||
|
||
typeof options.ready === 'function' && options.ready();
|
||
|
||
// 计算倒计时
|
||
var count = (function fn(){
|
||
var date = new Date(options.date);
|
||
var now = new Date(options.now);
|
||
var countTime = function(time){
|
||
return time > 0 ? time : 0;
|
||
}(date.getTime() - now.getTime());
|
||
var result = {
|
||
d: Math.floor(countTime/(1000*60*60*24)), // 天
|
||
h: Math.floor(countTime/(1000*60*60)) % 24, // 时
|
||
m: Math.floor(countTime/(1000*60)) % 60, // 分
|
||
s: Math.floor(countTime/1000) % 60 // 秒
|
||
};
|
||
var next = function(){
|
||
now.setTime(now.getTime() + 1000);
|
||
options.now = now;
|
||
count();
|
||
};
|
||
|
||
// 兼容旧版返回值
|
||
if(args.length > 1) result = [result.d,result.h,result.m,result.s]
|
||
|
||
// 计时 - 以秒间隔
|
||
inst.timer = setTimeout(next, 1000);
|
||
typeof options.clock === 'function' && options.clock(result, inst);
|
||
|
||
// 计时完成
|
||
if(countTime <= 0){
|
||
clearTimeout(inst.timer);
|
||
typeof options.done === 'function' && options.done(result, inst);
|
||
};
|
||
|
||
return fn;
|
||
})();
|
||
|
||
return inst;
|
||
},
|
||
|
||
// 某个时间在当前时间的多久前
|
||
timeAgo: function(time, onlyDate){
|
||
var that = this;
|
||
var arr = [[], []];
|
||
var 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
|
||
escape: function(html){
|
||
var exp = /[<"'>]|&(?=#[a-zA-Z0-9]+)/g;
|
||
if(html === undefined || html === null) return '';
|
||
|
||
html += '';
|
||
if(!exp.test(html)) return html;
|
||
|
||
return html.replace(/&(?!#?[a-zA-Z0-9]+;)/g, '&')
|
||
.replace(/</g, '<').replace(/>/g, '>')
|
||
.replace(/'/g, ''').replace(/"/g, '"');
|
||
},
|
||
|
||
// 还原转义的 html
|
||
unescape: function(html){
|
||
if(html === undefined || html === null) html = '';
|
||
html += '';
|
||
|
||
return html.replace(/\&/g, '&')
|
||
.replace(/\</g, '<').replace(/\>/g, '>')
|
||
.replace(/\'/g, '\'').replace(/\"/g, '"');
|
||
},
|
||
|
||
// 打开新窗口
|
||
openWin: function(options){
|
||
var win;
|
||
options = options || {};
|
||
win = options.window || window.open((options.url || ''), options.target, options.specs);
|
||
if(options.url) return;
|
||
win.document.open('text/html', 'replace');
|
||
win.document.write(options.content || '');
|
||
win.document.close();
|
||
},
|
||
|
||
// 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 = $(this)
|
||
,key = othis.attr(attr);
|
||
(typeof obj[key] === 'function') && obj[key].call(this, othis);
|
||
};
|
||
|
||
//清除旧事件，绑定新事件
|
||
_body.on(eventType, '*['+ attr +']', util.event.UTIL_EVENT_CALLBACK[attr]);
|
||
|
||
return obj;
|
||
}
|
||
};
|
||
|
||
util.on = util.event;
|
||
|
||
// DOM 尺寸变化，该创意来自：http://benalman.com/projects/jquery-resize-plugin/
|
||
/*
|
||
!function(a,b,c){"$: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);
|
||
*/
|
||
|
||
// 输出接口
|
||
exports('util', util);
|
||
}); |