重构 nav 垂直导航菜单展开收缩动画 (#1407)

* 更新 nav 用例
* 优化 nav 垂直导航的浅色背景样式
* 剔除 nav 多余选择器
* 优化 nav 代码书写规范
* 重构 nav 垂直导航菜单展开收缩动画
pull/1408/head
贤心 2023-10-25 09:55:25 +08:00 committed by GitHub
commit 32ea564e42
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3 changed files with 170 additions and 154 deletions

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@ -127,103 +127,94 @@
<div class="demo-nav-tree"> <div class="demo-nav-tree">
<div class="layui-inline"> <div class="layui-inline">
<ul class="layui-nav layui-nav-tree" lay-accordion lay-filter="test"> <ul class="layui-nav layui-nav-tree" lay-accordion lay-filter="test">
<li class="layui-nav-item"> <li class="layui-nav-item">
<a class="" href="javascript:;">产品</a> <a class="" href="javascript:;">菜单 1</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd> <dd><a href="javascript:;">选项2</a></dd>
<a href="javascript:;">后台模版</a> <dd><a href="javascript:;">选项3</a></dd>
<dl class="layui-nav-child">
<dd><a href="javascript:;">组件一</a></dd>
<dd>
<a href="javascript:;">组件二</a>
</dd>
<dd><a href="javascript:;">组件三</a></dd>
</dl>
</dd>
<dd><a href="javascript:;">电商平台</a></dd>
<dd><a href="">跳转菜单</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"> <li class="layui-nav-item">
<a href="javascript:;">解决方案</a> <a href="javascript:;">菜单 2</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd> <dd><a href="javascript:;">选项2</a></dd>
<a href="javascript:;">后台模版</a> <dd><a href="javascript:;">选项3</a></dd>
</dd>
<dd><a href="">电商平台</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"><a href="javascript:;">云市场</a></li> <li class="layui-nav-item">
<li class="layui-nav-item"><a href="">社区</a></li> <a href="javascript:;">菜单 3</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">选项1</a></dd>
<dd><a href="javascript:;">选项2</a></dd>
<dd><a href="javascript:;">选项3</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="javascript:;">菜单 4</a></li>
<li class="layui-nav-item"><a href="javascript:;">菜单 5</a></li>
</ul> </ul>
</div> </div>
<div class="layui-inline"> <div class="layui-inline">
<ul class="layui-nav layui-nav-tree layui-bg-gray" lay-filter="test">
<ul class="layui-nav layui-nav-tree layui-bg-gray" lay-filter="test">
<li class="layui-nav-item"> <li class="layui-nav-item">
<a class="" href="javascript:;">产品</a> <a class="" href="javascript:;">菜单 1</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd> <dd><a href="javascript:;">选项2</a></dd>
<a href="javascript:;">后台模版</a> <dd><a href="javascript:;">选项3</a></dd>
<dl class="layui-nav-child">
<dd><a href="javascript:;">组件一</a></dd>
<dd>
<a href="javascript:;">组件二</a>
</dd>
<dd><a href="javascript:;">组件三</a></dd>
</dl>
</dd>
<dd><a href="javascript:;">电商平台</a></dd>
<dd><a href="">跳转菜单</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"> <li class="layui-nav-item">
<a href="javascript:;">解决方案</a> <a href="javascript:;">菜单 2</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd> <dd><a href="javascript:;">选项2</a></dd>
<a href="javascript:;">后台模版</a> <dd><a href="javascript:;">选项3</a></dd>
</dd>
<dd><a href="">电商平台</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"><a href="javascript:;">云市场</a></li> <li class="layui-nav-item">
<li class="layui-nav-item"><a href="">社区</a></li> <a href="javascript:;">菜单 3</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">选项1</a></dd>
<dd><a href="javascript:;">选项2</a></dd>
<dd><a href="javascript:;">选项3</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="javascript:;">菜单 4</a></li>
<li class="layui-nav-item"><a href="javascript:;">菜单 5</a></li>
</ul> </ul>
</div> </div>
<div class="layui-inline"> <div class="layui-inline">
<ul class="layui-nav layui-nav-tree layui-bg-black" lay-accordion lay-filter="test">
<ul class="layui-nav layui-bg-cyan layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed"> <li class="layui-nav-item layui-nav-itemed">
<a class="" href="javascript:;">产品</a> <a class="" href="javascript:;">菜单 1</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd> <dd><a href="javascript:;">选项2</a></dd>
<a href="javascript:;">后台模版</a> <dd><a href="javascript:;">选项3</a></dd>
</dd>
<dd><a href="javascript:;">电商平台</a></dd>
<dd><a href="">跳转菜单</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"> <li class="layui-nav-item">
<a href="javascript:;">解决方案</a> <a href="javascript:;">菜单 2</a>
<dl class="layui-nav-child"> <dl class="layui-nav-child">
<dd><a href="javascript:;">移动模块</a></dd> <dd><a href="javascript:;">选项1</a></dd>
<dd><a href="javascript:;">后台模版</a></dd> <dd><a href="javascript:;">选项2</a></dd>
<dd><a href="">电商平台</a></dd> <dd><a href="javascript:;">选项3</a></dd>
</dl> </dl>
</li> </li>
<li class="layui-nav-item"><a href="">云市场</a></li> <li class="layui-nav-item">
<li class="layui-nav-item"><a href="">社区</a></li> <a href="javascript:;">菜单 3</a>
<dl class="layui-nav-child">
<dd><a href="javascript:;">选项1</a></dd>
<dd><a href="javascript:;">选项2</a></dd>
<dd><a href="javascript:;">选项3</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="javascript:;">菜单 4</a></li>
<li class="layui-nav-item"><a href="javascript:;">菜单 5</a></li>
</ul> </ul>
</div> </div>
</div> </div>

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@ -1285,7 +1285,6 @@ body .layui-table-tips .layui-layer-content{background: none; padding: 0; box-sh
.layui-nav .layui-nav-more{position: absolute; top: 0; right: 3px; left: auto !important; margin-top: 0; font-size: 12px; cursor: pointer; transition: all .2s; -webkit-transition: all .2s;} .layui-nav .layui-nav-more{position: absolute; top: 0; right: 3px; left: auto !important; margin-top: 0; font-size: 12px; cursor: pointer; transition: all .2s; -webkit-transition: all .2s;}
.layui-nav .layui-nav-mored, .layui-nav .layui-nav-mored,
.layui-nav-expand > a .layui-nav-more,
.layui-nav-itemed > a .layui-nav-more{transform: rotate(180deg);} .layui-nav-itemed > a .layui-nav-more{transform: rotate(180deg);}
@ -1333,12 +1332,9 @@ body .layui-table-tips .layui-layer-content{background: none; padding: 0; box-sh
/* 导航浅色背景 */ /* 导航浅色背景 */
.layui-nav.layui-bg-gray .layui-nav-item a, .layui-nav.layui-bg-gray .layui-nav-item a,
.layui-nav-tree.layui-bg-gray a{color: #373737; color: rgba(0,0,0,.8);} .layui-nav-tree.layui-bg-gray a{color: #373737; color: rgba(0,0,0,.8);}
.layui-nav-tree.layui-bg-gray{padding: 6px 0;}
.layui-nav-tree.layui-bg-gray .layui-nav-itemed>a{color: #000 !important;} .layui-nav-tree.layui-bg-gray .layui-nav-itemed>a{color: #000 !important;}
.layui-nav.layui-bg-gray .layui-this a{color: #16b777;} .layui-nav.layui-bg-gray .layui-this a{color: #16b777;}
.layui-nav-tree.layui-bg-gray .layui-nav-child{padding-left: 11px; background: none;} .layui-nav-tree.layui-bg-gray .layui-nav-child{padding-left: 11px; background: none;}
.layui-nav-tree.layui-bg-gray .layui-nav-item>a{padding-top: 0; padding-bottom: 0;}
.layui-nav-tree.layui-bg-gray .layui-nav-item>a .layui-nav-more{padding: 0;}
.layui-nav-tree.layui-bg-gray .layui-this, .layui-nav-tree.layui-bg-gray .layui-this,
.layui-nav-tree.layui-bg-gray .layui-this>a, .layui-nav-tree.layui-bg-gray .layui-this>a,
.layui-nav-tree.layui-bg-gray .layui-nav-child dd.layui-this, .layui-nav-tree.layui-bg-gray .layui-nav-child dd.layui-this,

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@ -273,45 +273,62 @@ layui.define('jquery', function(exports){
*/ */
// 点击菜单 - a 标签触发 // 点击菜单 - a 标签触发
,clickThis: function(){ ,clickThis: function() {
var othis = $(this); var othis = $(this);
var parents = othis.parents(NAV_ELEM); var parents = othis.closest(NAV_ELEM);
var filter = parents.attr('lay-filter'); var filter = parents.attr('lay-filter');
var parent = othis.parent() ; var parent = othis.parent() ;
var child = othis.siblings('.'+NAV_CHILD); var child = othis.siblings('.'+ NAV_CHILD);
var unselect = typeof parent.attr('lay-unselect') === 'string'; // 是否禁用选中 var unselect = typeof parent.attr('lay-unselect') === 'string'; // 是否禁用选中
if(!(othis.attr('href') !== 'javascript:;' && othis.attr('target') === '_blank') && !unselect){ // 满足点击选中的条件
if(!child[0]){ if (!(othis.attr('href') !== 'javascript:;' && othis.attr('target') === '_blank') && !unselect) {
parents.find('.'+THIS).removeClass(THIS); if (!child[0]) {
parents.find('.'+ THIS).removeClass(THIS);
parent.addClass(THIS); parent.addClass(THIS);
} }
} }
// 若为垂直菜单 // 若为垂直菜单
if (parents.hasClass(NAV_TREE)) { if (parents.hasClass(NAV_TREE)) {
var NAV_ITEMED = NAV_ITEM + 'ed'; var NAV_ITEMED = NAV_ITEM + 'ed'; // 用于标注展开状态
var NAV_EXPAND = 'layui-nav-expand'; var needExpand = !parent.hasClass(NAV_ITEMED); // 是否执行展开
var needExpand = !(parent.hasClass(NAV_EXPAND) || parent.hasClass(NAV_ITEMED)); var ANIM_MS = 200; // 动画过渡毫秒数
// 动画执行完成后的操作
var complete = function() {
$(this).css({
"display": "" // 剔除动画生成的 style display以适配外部样式的状态重置
});
// 避免导航滑块错位
parents.children('.'+ NAV_BAR).css({
opacity: 0
})
};
// 是否正处于动画中的状态 // 是否正处于动画中的状态
if (child.is(':animated')) return; if (child.is(':animated')) return;
// 剔除可能存在的 CSS3 动画类
child.removeClass(NAV_ANIM); child.removeClass(NAV_ANIM);
// 若有子菜单,则展开 // 若有子菜单,则对其执行展开或收缩
if (child[0]) { if (child[0]) {
child.stop().slideToggle(200, function() { if (needExpand) {
needExpand || parent.removeClass(NAV_ITEMED); // 先执行 slideDown 动画,再标注展开状态样式,避免元素 `block` 状态导致动画无效
}); child.slideDown(ANIM_MS, complete);
parent[needExpand ? 'addClass': 'removeClass'](NAV_EXPAND); parent.addClass(NAV_ITEMED);
// 手风琴 } else {
if(typeof parents.attr('lay-accordion') === 'string' || parents.attr('lay-shrink') === 'all'){ // 先取消展开状态样式,再将元素临时显示,避免 `none` 状态导致 slideUp 动画无效
// 收缩兄弟项 parent.removeClass(NAV_ITEMED);
parent.siblings().removeClass([ child.show().slideUp(ANIM_MS, complete);
NAV_ITEMED, }
NAV_EXPAND
].join(' ')).children('.'+NAV_CHILD).stop().slideUp(200); // 手风琴 --- 收缩兄弟展开项
if (typeof parents.attr('lay-accordion') === 'string' || parents.attr('lay-shrink') === 'all') {
var parentSibs = parent.siblings('.'+ NAV_ITEMED);
parentSibs.removeClass(NAV_ITEMED);
parentSibs.children('.'+ NAV_CHILD).show().stop().slideUp(ANIM_MS, complete);
} }
} }
} }
@ -357,56 +374,65 @@ layui.define('jquery', function(exports){
call.tabAuto.call({}); call.tabAuto.call({});
} }
//导航菜单 // 导航菜单
,nav: function(){ ,nav: function(){
var TIME = 200, timer = {}, timerMore = {}, timeEnd = {}, NAV_TITLE = 'layui-nav-title' var TIME = 200;
var timer = {};
var timerMore = {};
var timeEnd = {};
var NAV_TITLE = 'layui-nav-title';
//滑块跟随 // 滑块跟随
,follow = function(bar, nav, index){ var follow = function(bar, nav, index) {
var othis = $(this), child = othis.find('.'+NAV_CHILD); var othis = $(this);
if(nav.hasClass(NAV_TREE)){ var child = othis.find('.'+NAV_CHILD);
//无子菜单时跟随
if(!child[0]){ // 是否垂直导航菜单
if (nav.hasClass(NAV_TREE)) {
// 无子菜单时跟随
if (!child[0]) {
var thisA = othis.children('.'+ NAV_TITLE); var thisA = othis.children('.'+ NAV_TITLE);
bar.css({ bar.css({
top: othis.offset().top - nav.offset().top top: othis.offset().top - nav.offset().top,
,height: (thisA[0] ? thisA : othis).outerHeight() height: (thisA[0] ? thisA : othis).outerHeight(),
,opacity: 1 opacity: 1
}); });
} }
} else { } else {
child.addClass(NAV_ANIM); child.addClass(NAV_ANIM);
//若居中对齐 // 若居中对齐
if(child.hasClass(NAV_CHILD_C)) child.css({ if (child.hasClass(NAV_CHILD_C)) {
left: -(child.outerWidth() - othis.width())/2 child.css({
}); left: -(child.outerWidth() - othis.width()) / 2
//滑块定位
if(child[0]){ //若有子菜单,则滑块消失
bar.css({
left: bar.position().left + bar.width()/2
,width: 0
,opacity: 0
});
} else { //bar 跟随
bar.css({
left: othis.position().left + parseFloat(othis.css('marginLeft'))
,top: othis.position().top + othis.height() - bar.height()
}); });
} }
//渐显滑块并适配宽度 // 滑块定位
timer[index] = setTimeout(function(){ if (child[0]) { // 若有子菜单,则滑块消失
bar.css({ bar.css({
width: child[0] ? 0 : othis.width() left: bar.position().left + bar.width() / 2,
,opacity: child[0] ? 0 : 1 width: 0,
opacity: 0
});
} else { // bar 跟随
bar.css({
left: othis.position().left + parseFloat(othis.css('marginLeft')),
top: othis.position().top + othis.height() - bar.height()
});
}
// 渐显滑块并适配宽度
timer[index] = setTimeout(function() {
bar.css({
width: child[0] ? 0 : othis.width(),
opacity: child[0] ? 0 : 1
}); });
}, device.ie && device.ie < 10 ? 0 : TIME); }, device.ie && device.ie < 10 ? 0 : TIME);
//显示子菜单 // 显示子菜单
clearTimeout(timeEnd[index]); clearTimeout(timeEnd[index]);
if(child.css('display') === 'block'){ if (child.css('display') === 'block') {
clearTimeout(timerMore[index]); clearTimeout(timerMore[index]);
} }
timerMore[index] = setTimeout(function(){ timerMore[index] = setTimeout(function(){
@ -416,61 +442,64 @@ layui.define('jquery', function(exports){
} }
}; };
//遍历导航 // 遍历导航
$(NAV_ELEM + elemFilter).each(function(index){ $(NAV_ELEM + elemFilter).each(function(index) {
var othis = $(this) var othis = $(this);
,bar = $('<span class="'+ NAV_BAR +'"></span>') var bar = $('<span class="'+ NAV_BAR +'"></span>');
,itemElem = othis.find('.'+NAV_ITEM); var itemElem = othis.find('.'+NAV_ITEM);
//hover 滑动效果 // hover 滑动效果
if(!othis.find('.'+NAV_BAR)[0]){ if (!othis.find('.'+NAV_BAR)[0]) {
othis.append(bar); othis.append(bar);
(othis.hasClass(NAV_TREE) ( othis.hasClass(NAV_TREE)
? itemElem.find('dd,>.'+ NAV_TITLE) ? itemElem.find('dd,>.'+ NAV_TITLE)
: itemElem).on('mouseenter', function(){ : itemElem
).on('mouseenter', function() {
follow.call(this, bar, othis, index); follow.call(this, bar, othis, index);
}).on('mouseleave', function(){ //鼠标移出 }).on('mouseleave', function() { // 鼠标移出
//是否为垂直导航 // 是否为垂直导航
if(othis.hasClass(NAV_TREE)){ if (othis.hasClass(NAV_TREE)) {
bar.css({ bar.css({
height: 0 height: 0,
,opacity: 0 opacity: 0
}); });
} else { } else {
//隐藏子菜单 // 隐藏子菜单
clearTimeout(timerMore[index]); clearTimeout(timerMore[index]);
timerMore[index] = setTimeout(function(){ timerMore[index] = setTimeout(function(){
othis.find('.'+NAV_CHILD).removeClass(SHOW); othis.find('.'+ NAV_CHILD).removeClass(SHOW);
othis.find('.'+NAV_MORE).removeClass(NAV_MORE+'d'); othis.find('.'+ NAV_MORE).removeClass(NAV_MORE +'d');
}, 300); }, 300);
} }
}); });
othis.on('mouseleave', function(){
// 鼠标离开当前菜单时
othis.on('mouseleave', function() {
clearTimeout(timer[index]) clearTimeout(timer[index])
timeEnd[index] = setTimeout(function(){ timeEnd[index] = setTimeout(function() {
if(!othis.hasClass(NAV_TREE)){ if (!othis.hasClass(NAV_TREE)) {
bar.css({ bar.css({
width: 0 width: 0,
,left: bar.position().left + bar.width()/2 left: bar.position().left + bar.width() / 2,
,opacity: 0 opacity: 0
}); });
} }
}, TIME); }, TIME);
}); });
} }
//展开子菜单 // 展开子菜单
itemElem.find('a').each(function(){ itemElem.find('a').each(function() {
var thisA = $(this) var thisA = $(this);
,parent = thisA.parent() var parent = thisA.parent();
,child = thisA.siblings('.'+NAV_CHILD); var child = thisA.siblings('.'+ NAV_CHILD);
//输出小箭头 // 输出小箭头
if(child[0] && !thisA.children('.'+NAV_MORE)[0]){ if (child[0] && !thisA.children('.'+ NAV_MORE)[0]) {
thisA.append('<i class="layui-icon '+ NAV_DOWN +' '+ NAV_MORE +'"></i>'); thisA.append('<i class="layui-icon '+ NAV_DOWN +' '+ NAV_MORE +'"></i>');
} }
thisA.off('click', call.clickThis).on('click', call.clickThis); //点击菜单 thisA.off('click', call.clickThis).on('click', call.clickThis); // 点击菜单
}); });
}); });
} }