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@Name：layer v2.1 弹层组件
@Author：贤心
@License：LGPL
;!function(window, undefined){
&use strict&;
var $, win, ready = {
getPath: function(){
var js = document.scripts, script = js[js.length - 1], jsPath = script.
if(script.getAttribute('merge'))
return jsPath.substring(0, jsPath.lastIndexOf(&/&) + 1);
//屏蔽Enter触发弹层
enter: function(e){
if(e.keyCode === 13) e.preventDefault();
config: {}, end: {},
btn: ['确定','取消'],
//五种原始层模式
type: ['dialog', 'page', 'iframe', 'loading', 'tips']
//默认内置方法。
var layer = {
v: '2.1',
ie6: !!window.ActiveXObject&&!window.XMLHttpRequest,
path: ready.getPath,
config: function(options, fn){
var item = 0;
options = options || {};
layer.cache = ready.config = $.extend(ready.config, options);
layer.path = ready.config.path || layer.
typeof options.extend === 'string' && (options.extend = [options.extend]);
layer.use('skin/layer.css', (options.extend && options.extend.length & 0) ? (function loop(){
var ext = options.
layer.use(ext[ext[item] ? item : item-1], item & ext.length ? function(){
}() : fn);
}()) : fn);
//载入配件
use: function(module, fn, readyMethod){
var i = 0, head = $('head')[0];
var module = module.replace(/\s/g, '');
var iscss = /\.css$/.test(module);
var node = document.createElement(iscss ? 'link' : 'script');
var id = 'layui_layer_' + module.replace(/\.|\//g, '');
if(!layer.path)
if(iscss){
node.rel = 'stylesheet';
node[iscss ? 'href' : 'src'] = /^http:\/\//.test(module) ? module : layer.path +
if(!$('#'+ id)[0]){
head.appendChild(node);
//轮询加载就绪
(function poll() {
(iscss ? parseInt($('#'+id).css('width')) === 1989 : layer[readyMethod||id]) ? function(){
fn && fn();
try { iscss || head.removeChild(node); } catch(e){};
}() : setTimeout(poll, 100);
ready: function(path, fn){
var type = typeof path === 'function';
if(type) fn =
layer.config($.extend(ready.config, function(){
return type ? {} : {path: path};
}()), fn);
//各种快捷引用
alert: function(content, options, yes){
var type = typeof options === 'function';
if(type) yes =
return layer.open($.extend({
content: content,
}, type ? {} : options));
confirm: function(content, options, yes, cancel){
var type = typeof options === 'function';
return layer.open($.extend({
content: content,
btn: ready.btn,
cancel: cancel
}, type ? {} : options));
msg: function(content, options, end){ //最常用提示层
var type = typeof options === 'function', rskin = ready.config.
var skin = (rskin ? rskin + ' ' + rskin + '-msg' : '')||'layui-layer-msg';
var shift = doms.anim.length - 1;
if(type) end =
return layer.open($.extend({
content: content,
time: 3000,
shade: false,
skin: skin,
title: false,
closeBtn: false,
btn: false,
}, (type && !ready.config.skin) ? {
skin: skin + ' layui-layer-hui',
shift: shift
} : function(){
options = options || {};
if(options.icon === -1 || options.icon === undefined && !ready.config.skin){
options.skin = skin + ' ' + (options.skin||'layui-layer-hui');
load: function(icon, options){
return layer.open($.extend({
icon: icon || 0,
shade: 0.01
}, options));
tips: function(content, follow, options){
return layer.open($.extend({
content: [content, follow],
closeBtn: false,
time: 3000,
maxWidth: 210
}, options));
var Class = function(setings){
var that =
that.index = ++layer.
that.config = $.extend({}, that.config, ready.config, setings);
that.creat();
Class.pt = Class.
//缓存常用字符
var doms = ['layui-layer', '.layui-layer-title', '.layui-layer-main', '.layui-layer-dialog', 'layui-layer-iframe',
 'layui-layer-content', 'layui-layer-btn', 'layui-layer-close'];
doms.anim = ['layui-anim', 'layui-anim-01', 'layui-anim-02', 'layui-anim-03', 'layui-anim-04', 'layui-anim-05', 'layui-anim-06'];
//默认配置
Class.pt.config = {
shade: 0.3,
fix: true,
move: doms[1],
title: '信息',
offset: 'auto',
area: 'auto',
closeBtn: 1,
time: 0, //0表示不自动关闭
maxWidth: 360,
scrollbar: true, //是否允许浏览器滚动条
Class.pt.vessel = function(conType, callback){
var that = this, times = that.index, config = that.
var zIndex = config.zIndex + times, titype = typeof config.title === 'object';
var ismax = config.maxmin && (config.type === 1 || config.type === 2);
var titleHTML = (config.title ? '&div class=&layui-layer-title& style=&'+ (titype ? config.title[1] : '') +'&&'
+ (titype ? config.title[0] : config.title)
+ '&/div&' : '');
config.zIndex = zI
callback([
config.shade ? ('&div class=&layui-layer-shade& id=&layui-layer-shade'+ times +'& times=&'+ times +'& style=&'+
('z-index:'+ (zIndex-1) +'; background-color:'+ (config.shade[1]||'#000') +'; opacity:'+ (config.shade[0]||config.shade)
+'; filter:alpha(opacity='+ (config.shade[0]*100||config.shade*100) +');') +'&&&/div&') : '',
'&div class=&'+ doms[0] +' '+ (doms.anim[config.shift]||'') + (' layui-layer-'+ready.type[config.type])
+ (((config.type == 0 || config.type == 2) && !config.shade) ? ' layui-layer-border' : '') + ' ' + (config.skin||'')
+'& id=&'+ doms[0] + times +'& type=&'+ ready.type[config.type] +'& times=&'+ times +'& showtime=&'+ config.time
+'& conType=&'+ (conType ? 'object' : 'string') +'& style=&z-index: '+ zIndex +'; width:'+ config.area[0]
+ ';height:' + config.area[1] + (config.fix ? '' : ';position:') +'&&'
+ (conType && config.type != 2 ? '' : titleHTML)
+'&div class=&layui-layer-content'+ ((config.type == 0 && config.icon !== -1) ? ' layui-layer-padding' :'')
+ (config.type == 3 ? ' layui-layer-loading'+config.icon : '') +'&&'
+ (config.type == 0 && config.icon !== -1 ? '&i class=&layui-layer-ico layui-layer-ico'+ config.icon +'&&&/i&' : '')
+ (config.type == 1 && conType ? '' : (config.content||''))
+'&/div&'
+ '&span class=&layui-layer-setwin&&'+ function(){
var closebtn = ismax ? '&a class=&layui-layer-min& href=&javascript:;&&&cite&&/cite&&/a&
&a class=&layui-layer-ico layui-layer-max& href=&javascript:;&&&/a&' : '';
config.closeBtn && (closebtn += '&a class=&layui-layer-ico '+ doms[7] +' '+ doms[7]
+ (config.title ? config.closeBtn : (config.type == 4 ? '1' : '2')) +'& href=&javascript:;&&&/a&');
}() + '&/span&'
+ (config.btn ? function(){
var button = '';
typeof config.btn === 'string' && (config.btn = [config.btn]);
for(var i = 0, len = config.btn. i & i++){
button += '&a class=&'+ doms[6] +''+ i +'&&'+ config.btn[i] +'&/a&'
return '&div class=&'+ doms[6] +'&&'+ button +'&/div&'
}() : '')
+'&/div&'
], titleHTML);
//创建骨架
Class.pt.creat = function(){
var that = this, config = that.config, times = that.index, nodeI
var content = config.content, conType = typeof content === 'object';
if(typeof config.area === 'string'){
config.area = config.area === 'auto' ? ['', ''] : [config.area, ''];
switch(config.type){
config.btn = ('btn' in config) ? config.btn : ready.btn[0];
layer.closeAll('dialog');
var content = config.content = conType ? config.content : [config.content||'', 'auto'];
config.content = '&iframe scrolling=&'+ (config.content[1]||'auto') +'& allowtransparency=&true& id=&
'+ doms[4] +''+ times +'& name=&'+ doms[4] +''+ times +'& onload=&this.className=\'\';& class=&layui-layer-load& frameborder=&0& src=&'
 + config.content[0] + '&&&/iframe&';
config.title =
config.closeBtn =
config.icon === -1 && (config.icon === 0);
layer.closeAll('loading');
conType || (config.content = [config.content, 'body']);
config.follow = config.content[1];
config.content = config.content[0] + '&i class=&layui-layer-TipsG&&&/i&';
config.title =
config.shade =
config.fix =
config.tips = typeof config.tips === 'object' ? config.tips : [config.tips, true];
config.tipsMore || layer.closeAll('tips');
//建立容器
that.vessel(conType, function(html, titleHTML){
$('body').append(html[0]);
conType ? function(){
(config.type == 2 || config.type == 4) ? function(){
$('body').append(html[1]);
}() : function(){
if(!content.parents('.'+doms[0])[0]){
content.show().addClass('layui-layer-wrap').wrap(html[1]);
$('#'+ doms[0] + times).find('.'+doms[5]).before(titleHTML);
}() : $('body').append(html[1]);
that.layero = $('#'+ doms[0] + times);
config.scrollbar || doms.html.css('overflow', 'hidden').attr('layer-full', times);
}).auto(times);
config.type == 2 && layer.ie6 && that.layero.find('iframe').attr('src', content[0]);
$(document).off('keydown', ready.enter).on('keydown', ready.enter);
that.layero.on('keydown', function(e){
$(document).off('keydown', ready.enter);
//坐标自适应浏览器窗口尺寸
config.type == 4 ? that.tips() : that.offset();
if(config.fix){
win.on('resize', function(){
that.offset();
(/^\d+%$/.test(config.area[0]) || /^\d+%$/.test(config.area[1])) && that.auto(times);
config.type == 4 && that.tips();
config.time &= 0 || setTimeout(function(){
layer.close(that.index)
}, config.time);
that.move().callback();
Class.pt.auto = function(index){
var that = this, config = that.config, layero = $('#'+ doms[0] + index);
if(config.area[0] === '' && config.maxWidth & 0){
//为了修复IE7下一个让人难以理解的bug
if(/MSIE 7/.test(navigator.userAgent) && config.btn){
layero.width(layero.innerWidth());
layero.outerWidth() & config.maxWidth && layero.width(config.maxWidth);
var area = [layero.innerWidth(), layero.innerHeight()];
var titHeight = layero.find(doms[1]).outerHeight() || 0;
var btnHeight = layero.find('.'+doms[6]).outerHeight() || 0;
function setHeight(elem){
elem = layero.find(elem);
elem.height(area[1] - titHeight - btnHeight - 2*(parseFloat(elem.css('padding'))|0));
switch(config.type){
setHeight('iframe');
if(config.area[1] === ''){
if(config.fix && area[1] &= win.height()){
area[1] = win.height();
setHeight('.'+doms[5]);
setHeight('.'+doms[5]);
//计算坐标
Class.pt.offset = function(){
var that = this, config = that.config, layero = that.
var area = [layero.outerWidth(), layero.outerHeight()];
var type = typeof config.offset === 'object';
that.offsetTop = (win.height() - area[1])/2;
that.offsetLeft = (win.width() - area[0])/2;
that.offsetTop = config.offset[0];
that.offsetLeft = config.offset[1]||that.offsetL
} else if(config.offset !== 'auto'){
that.offsetTop = config.
if(config.offset === 'rb'){ //右下角
that.offsetTop = win.height() - area[1];
that.offsetLeft = win.width() - area[0];
if(!config.fix){
that.offsetTop = /%$/.test(that.offsetTop) ?
win.height()*parseFloat(that.offsetTop)/100
: parseFloat(that.offsetTop);
that.offsetLeft = /%$/.test(that.offsetLeft) ?
win.width()*parseFloat(that.offsetLeft)/100
: parseFloat(that.offsetLeft);
that.offsetTop += win.scrollTop();
that.offsetLeft += win.scrollLeft();
layero.css({top: that.offsetTop, left: that.offsetLeft});
Class.pt.tips = function(){
var that = this, config = that.config, layero = that.
var layArea = [layero.outerWidth(), layero.outerHeight()], follow = $(config.follow);
if(!follow[0]) follow = $('body');
var goal = {
width: follow.outerWidth(),
height: follow.outerHeight(),
top: follow.offset().top,
left: follow.offset().left
}, tipsG = layero.find('.layui-layer-TipsG');
var guide = config.tips[0];
config.tips[1] || tipsG.remove();
goal.autoLeft = function(){
if(goal.left + layArea[0] - win.width() & 0){
goal.tipLeft = goal.left + goal.width - layArea[0];
tipsG.css({right: 12, left: 'auto'});
goal.tipLeft = goal.
//辨别tips的方位
goal.where = [function(){ //上
goal.autoLeft();
goal.tipTop = goal.top - layArea[1] - 10;
tipsG.removeClass('layui-layer-TipsB').addClass('layui-layer-TipsT').css('border-right-color', config.tips[1]);
}, function(){ //右
goal.tipLeft = goal.left + goal.width + 10;
goal.tipTop = goal.
tipsG.removeClass('layui-layer-TipsL').addClass('layui-layer-TipsR').css('border-bottom-color', config.tips[1]);
}, function(){ //下
goal.autoLeft();
goal.tipTop = goal.top + goal.height + 10;
tipsG.removeClass('layui-layer-TipsT').addClass('layui-layer-TipsB').css('border-right-color', config.tips[1]);
}, function(){ //左
goal.tipLeft = goal.left - layArea[0] - 10;
goal.tipTop = goal.
tipsG.removeClass('layui-layer-TipsR').addClass('layui-layer-TipsL').css('border-bottom-color', config.tips[1]);
goal.where[guide-1]();
/* 8*2为小三角形占据的空间 */
if(guide === 1){
goal.top - (win.scrollTop() + layArea[1] + 8*2) & 0 && goal.where[2]();
} else if(guide === 2){
win.width() - (goal.left + goal.width + layArea[0] + 8*2) & 0 || goal.where[3]()
} else if(guide === 3){
(goal.top - win.scrollTop() + goal.height + layArea[1] + 8*2) - win.height() & 0 && goal.where[0]();
} else if(guide === 4){
layArea[0] + 8*2 - goal.left & 0 && goal.where[1]()
layero.find('.'+doms[5]).css({
'background-color': config.tips[1],
'padding-right': (config.closeBtn ? '30px' : '')
layero.css({left: goal.tipLeft, top: goal.tipTop});
Class.pt.move = function(){
var that = this, config = that.config, conf = {
moveLayer: function(){
var layero = conf.layero, mgleft = parseInt(layero.css('margin-left'));
var lefts = parseInt(conf.move.css('left'));
mgleft === 0 || (lefts = lefts - mgleft);
if(layero.css('position') !== 'fixed'){
lefts = lefts - layero.parent().offset().
conf.setY = 0;
layero.css({left: lefts, top: parseInt(conf.move.css('top')) - conf.setY});
var movedom = that.layero.find(config.move);
config.move && movedom.attr('move', 'ok');
movedom.css({cursor: config.move ? 'move' : 'auto'});
$(config.move).on('mousedown', function(M){
M.preventDefault();
if($(this).attr('move') === 'ok'){
conf.ismove =
conf.layero = $(this).parents('.'+ doms[0]);
var xx = conf.layero.offset().left, yy = conf.layero.offset().top,
ww = conf.layero.outerWidth() - 6, hh = conf.layero.outerHeight() - 6;
if(!$('#layui-layer-moves')[0]){
$('body').append('&div id=&layui-layer-moves& class=&layui-layer-moves& style=&left:'+
xx +' top:'+ yy +' width:'+ ww +' height:'+ hh +' z-index:&&&/div&');
conf.move = $('#layui-layer-moves');
config.moveType && conf.move.css({visibility: 'hidden'});
conf.moveX = M.pageX - conf.move.position().
conf.moveY = M.pageY - conf.move.position().
conf.layero.css('position') !== 'fixed' || (conf.setY = win.scrollTop());
$(document).mousemove(function(M){
if(conf.ismove){
var offsetX = M.pageX - conf.moveX, offsetY = M.pageY - conf.moveY;
M.preventDefault();
//控制元素不被拖出窗口外
if(!config.moveOut){
conf.setY = win.scrollTop();
var setRig = win.width() - conf.move.outerWidth(), setTop = conf.setY;
offsetX & 0 && (offsetX = 0);
offsetX & setRig && (offsetX = setRig);
offsetY & setTop && (offsetY = setTop);
offsetY & win.height() - conf.move.outerHeight() + conf.setY && (offsetY = win.height() - conf.move.outerHeight() + conf.setY);
conf.move.css({left: offsetX, top: offsetY});
config.moveType && conf.moveLayer();
offsetX = offsetY = setRig = setTop =
}).mouseup(function(){
if(conf.ismove){
conf.moveLayer();
conf.move.remove();
config.moveEnd && config.moveEnd();
conf.ismove =
}catch(e){
conf.ismove =
Class.pt.callback = function(){
var that = this, layero = that.layero, config = that.
that.openLayer();
if(config.success){
if(config.type == 2){
layero.find('iframe').on('load', function(){
config.success(layero, that.index);
config.success(layero, that.index);
layer.ie6 && that.IE6(layero);
layero.find('.'+ doms[6]).children('a').on('click', function(){
var index = $(this).index();
config['btn'+(index+1)] && config['btn'+(index+1)](that.index, layero);
if(index === 0){
config.yes ? config.yes(that.index, layero) : layer.close(that.index);
} else if(index === 1){
config['btn'+(index+1)] || layer.close(that.index);
function cancel(){
var close = config.cancel && config.cancel(that.index);
close === false || layer.close(that.index);
//右上角关闭回调
layero.find('.'+ doms[7]).on('click', cancel);
//点遮罩关闭
if(config.shadeClose){
$('#layui-layer-shade'+ that.index).on('click', function(){
layer.close(that.index);
layero.find('.layui-layer-min').on('click', function(){
layer.min(that.index, config);
config.min && config.min(layero);
//全屏/还原
layero.find('.layui-layer-max').on('click', function(){
if($(this).hasClass('layui-layer-maxmin')){
layer.restore(that.index);
config.restore && config.restore(layero);
layer.full(that.index, config);
config.full && config.full(layero);
config.end && (ready.end[that.index] = config.end);
//for ie6 恢复select
ready.reselect = function(){
$.each($('select'), function(index , value){
var sthis = $(this);
if(!sthis.parents('.'+doms[0])[0]){
(sthis.attr('layer') == 1 && $('.'+doms[0]).length & 1) && sthis.removeAttr('layer').show();
Class.pt.IE6 = function(layero){
var that = this, _ieTop = layero.offset().
//ie6的固定与相对定位
function ie6Fix(){
layero.css({top : _ieTop + (that.config.fix ? win.scrollTop() : 0)});
win.scroll(ie6Fix);
//隐藏select
$('select').each(function(index , value){
var sthis = $(this);
if(!sthis.parents('.'+doms[0])[0]){
sthis.css('display') === 'none' || sthis.attr({'layer' : '1'}).hide();
//需依赖原型的对外方法
Class.pt.openLayer = function(){
var that =
//置顶当前窗口
layer.zIndex = that.config.zI
layer.setTop = function(layero){
var setZindex = function(){
layer.zIndex++;
layero.css('z-index', layer.zIndex + 1);
layer.zIndex = parseInt(layero[0].style.zIndex);
layero.on('mousedown', setZindex);
return layer.zI
ready.record = function(layero){
var area = [
layero.outerWidth(),
layero.outerHeight(),
layero.position().top,
layero.position().left + parseFloat(layero.css('margin-left'))
layero.find('.layui-layer-max').addClass('layui-layer-maxmin');
layero.attr({area: area});
ready.rescollbar = function(index){
if(doms.html.attr('layer-full') == index){
if(doms.html[0].style.removeProperty){
doms.html[0].style.removeProperty('overflow');
doms.html[0].style.removeAttribute('overflow');
doms.html.removeAttr('layer-full');
/** 内置成员 */
window.layer =
//获取子iframe的DOM
layer.getChildFrame = function(selector, index){
index = index || $('.'+doms[4]).attr('times');
return $('#'+ doms[0] + index).find('iframe').contents().find(selector);
//得到当前iframe层的索引，子iframe时使用
layer.getFrameIndex = function(name){
return $('#'+ name).parents('.'+doms[4]).attr('times');
//iframe层自适应宽高
layer.iframeAuto = function(index){
if(!index)
var heg = layer.getChildFrame('html', index).outerHeight();
var layero = $('#'+ doms[0] + index);
var titHeight = layero.find(doms[1]).outerHeight() || 0;
var btnHeight = layero.find('.'+doms[6]).outerHeight() || 0;
layero.css({height: heg + titHeight + btnHeight});
layero.find('iframe').css({height: heg});
//重置iframe url
layer.iframeSrc = function(index, url){
$('#'+ doms[0] + index).find('iframe').attr('src', url);
//设定层的样式
layer.style = function(index, options){
var layero = $('#'+ doms[0] + index), type = layero.attr('type');
var titHeight = layero.find(doms[1]).outerHeight() || 0;
var btnHeight = layero.find('.'+doms[6]).outerHeight() || 0;
if(type === ready.type[1] || type === ready.type[2]){
layero.css(options);
if(type === ready.type[2]){
layero.find('iframe').css({
height: parseFloat(options.height) - titHeight - btnHeight
layer.min = function(index, options){
var layero = $('#'+ doms[0] + index);
var titHeight = layero.find(doms[1]).outerHeight() || 0;
ready.record(layero);
layer.style(index, {width: 180, height: titHeight, overflow: 'hidden'});
layero.find('.layui-layer-min').hide();
layero.attr('type') === 'page' && layero.find(doms[4]).hide();
ready.rescollbar(index);
layer.restore = function(index){
var layero = $('#'+ doms[0] + index), area = layero.attr('area').split(',');
var type = layero.attr('type');
layer.style(index, {
width: parseFloat(area[0]),
height: parseFloat(area[1]),
top: parseFloat(area[2]),
left: parseFloat(area[3]),
overflow: 'visible'
layero.find('.layui-layer-max').removeClass('layui-layer-maxmin');
layero.find('.layui-layer-min').show();
layero.attr('type') === 'page' && layero.find(doms[4]).show();
ready.rescollbar(index);
layer.full = function(index){
var layero = $('#'+ doms[0] + index),
ready.record(layero);
if(!doms.html.attr('layer-full')){
doms.html.css('overflow','hidden').attr('layer-full', index);
clearTimeout(timer);
timer = setTimeout(function(){
var isfix = layero.css('position') === 'fixed';
layer.style(index, {
top: isfix ? 0 : win.scrollTop(),
left: isfix ? 0 : win.scrollLeft(),
width: win.width(),
height: win.height()
layero.find('.layui-layer-min').hide();
//改变title
layer.title = function(name, index){
var title = $('#'+ doms[0] + (index||layer.index)).find(doms[1]);
title.html(name);
//关闭layer总方法
layer.close = function(index){
var layero = $('#'+ doms[0] + index), type = layero.attr('type');
if(!layero[0])
if(type === ready.type[1] && layero.attr('conType') === 'object'){
layero.children(':not(.'+ doms[5] +')').remove();
for(var i = 0; i & 2; i++){
layero.find('.layui-layer-wrap').unwrap().hide();
//低版本IE 回收 iframe
if(type === ready.type[2]){
var iframe = $('#'+doms[4]+index)[0];
iframe.contentWindow.document.write('');
iframe.contentWindow.close();
layero.find('.'+doms[5])[0].removeChild(iframe);
} catch(e){}
layero[0].innerHTML = '';
layero.remove();
$('#layui-layer-moves, #layui-layer-shade' + index).remove();
layer.ie6 && ready.reselect();
ready.rescollbar(index);
$(document).off('keydown', ready.enter);
typeof ready.end[index] === 'function' && ready.end[index]();
delete ready.end[index];
//关闭所有层
layer.closeAll = function(type){
$.each($('.'+doms[0]), function(){
var othis = $(this);
var is = type ? (othis.attr('type') === type) : 1;
is && layer.close(othis.attr('times'));
ready.run = function(){
win = $(window);
doms.html = $('html');
layer.open = function(deliver){
var o = new Class(deliver);
'function' === typeof define ? define(function(){
ready.run();
}) : function(){
ready.run();
layer.use('skin/layer.css');
}(window);
参考知识库
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(1)(1)(12)(13)}