什么是html5纯CSS的三级联动级联菜单

给你一个JQ的三级联动：

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!doctype html

html

head

title/title

meta charset = "utf-8"/

/head

style

/style

body

select id="one"

option value=""请选择省份/option

/select

select id="two"

option value=""请选择城市/option

/select

select id="three"

option value=""请选择区域/option

/select

script type="text/javascript" src="js/jquery-1.12.0.js"/script

script type="text/javascript"

/*

1.搭建框架

2.给省份和城市绑定change事件

*/

$(function(){

var province = [

{"name" : "广东省" ,

"city" : [

{

"name" : "广州市" ,

"area" : ["越秀区","荔湾区","海珠区","天河区,白云区"]

},

{

"name" : "深圳市" ,

"area" : ["福田区","罗湖区","南山区","宝安区","龙岗区"]

}

]

},

{"name" : "浙江省" ,

"city" : [

{

"name" : "杭州市" ,

"area" : ["上城区","下城区","江干区","西湖区"]

},

{

"name" : "丽水" ,

"area" : ["莲都区","松阳县","遂昌县","云和县"]

}

]

},

{"name" : "江西省" ,

"city" : [

{

"name" : "南昌市" ,

"area" : ["东湖区","西湖区","青云谱区","湾里区"]

},

{

"name" : "九江市" ,

"area" : ["浔阳区","庐山区","瑞昌市","九江县"]

},

{

"name" : "赣州市" ,

"area" : ["章贡区","南康区","上犹县","赣县"]

}

]

},

];

// 二级联动

$("#two").change(function(){

var one_index = $("#one option:selected").index();

var two_index = $("#two option:selected").index();

var three = $("#three");

three.empty().append("option请选择区域/option");

if(two_index  0){

var area = province[one_index-1].city[two_index-1].area;

for(var i = 0 ; i  area.length ; i++){

three.append("option"+area[i]+"/option");

}

}

});

// 一级联动

$("#one").change(function(){

var one_index = $("#one option:selected").index();

var two = $("#two");

console.log(one_index)

two.empty().append("option请选择城市/option");

$("#three").empty().append("option请选择区域/option");//清除

if(one_index  0){

var city = province[one_index-1].city;

console.log(province[one_index-1].city)

for(var i = 0 ; i  city.length ; i++){

two.append("option"+city[i].name+"/option");

}

}

});

init();

function init(){

for(var i = 0 ; i  province.length ; i++){

$("#one").append("option"+province[i].name+"/option");

}

}

});

/script

/body

/html

使用HTML5的contentmenu事件实现自定义右键菜单的功能

contextmenu事件：用以表示何时应该显示上下文菜单，以便开发人员取消默认的上下文菜单而提供自定义的菜单

效果如下所示

html5左侧弹出菜单怎样实现

这个可以通过绝对定位，配合left设置 或者translate去实现

left的方法：

比如让class为menu的元素宽为300px，高100%的，设置left为-300px；在这期间可以加一个过渡transition:left 0.3s ...；

然后让class为menu active的元素设置 left设置为0就可以了 ，在这期间可以加一个过渡transition:left 0.3s ...；

然后可以通过Jquery的toggleClass('active');来实现切换

translate

比如让class为menu的元素宽为300px，高100%的，设置left为-300px；在这期间可以加一个过渡transition:left 0.3s ...；

然后让class为menu active的元素设置 transform:translate3d(-300px,0,0) ，在这期间可以加一个过渡transition:left 0.3s ...；

然后可以通过Jquery的toggleClass('active');来实现切换

这个过程中 需要注意 body需要overflow：hidden; (不然会有滚动条，可设置overflow-x即可)

left 和 translate 最好用translate ，translate3d可以开启GPU硬件加速，性能会更好，体验会更流畅

我github有类似小组件样式

github： IFmiss

希望能解决你的问题

html5 浮动侧滑菜单栏怎样实现

一共有4种侧滑动画特效。这款CSS3菜单的特点是鼠标划过时即可以各种动画方式展开和隐藏菜单项，该动画方式由CSS3中的transition-delay属性来完成

style type="text/css"

/*Fontawesome Iconfont*/

@import url();

@import url();

* {margin: 0; padding: 0;}

li {list-style-type: none;}

.grid {float: left;width:980px;margin: 0 auto;}

.grid li { width: 285px; height: 500px; overflow: hidden; float: left; margin: 20px 0 20px 30px; position: relative; }

.grid li:hover {box-shadow: 0 0 15px 0 rgba(0, 0, 0, 0.5);}

.gridli section {position: relative; transition: all 0.25s; width: 100%;}

.gridli h2 {font: bold 14px montserrat; color: #fff; text-transform: uppercase; position: absolute; text-align: center; width: 60%; left: 20%; top: 100px; padding: 10px 0; border: 2px solid white; border-radius: 4px;}

.sidenav { position: absolute; top: 0; left: 0; bottom: 0; background: linear-gradient(rgba(50,60,60, 1), rgba(50,60,60, 0.7)); width: 50px; transition: all 0.25s; overflow: hidden; padding-top: 100px;}

.sidenav li { _overflow: hidden; width: 150px; }

.sidenav a { text-decoration: none; color: #eee; display: block; line-height: 48px; }

.sidenav span {display: block;}

.sidenav b { padding-left 10px; display: block; color: white; font-family: Montserrat; font-size: 12px; line-height: 4; opacity: 0; }

.sidenav a i { display: block; float: left; font-size: 16px; line-height: 48px; width: 50px; text-align: center; }

/*All instances*/

.gridli:hover .sidenav {width: 150px;}

.gridli:hover section {margin-left: 150px;}

.gridli:hover b {opacity: 1;}

.sidenav li:nth-child(1) b, .sidenav li:nth-child(1) a {transition-delay: .08s;}

.sidenav li:nth-child(2) b, .sidenav li:nth-child(2) a {transition-delay: .16s;}

.sidenav li:nth-child(3) b, .sidenav li:nth-child(3) a {transition-delay: .24s;}

.sidenav li:nth-child(4) b, .sidenav li:nth-child(4) a {transition-delay: .32s;}

.sidenav li:nth-child(5) b, .sidenav li:nth-child(5) a {transition-delay: .40s;}

.sidenav li:nth-child(6) b, .sidenav li:nth-child(6) a {transition-delay: .48s;}

/*Three*/

.three .w {transform: perspective(100px) translateZ(-24px);}

.three b {transform: perspective(100px) rotateY(180deg) translateZ(24px) scale(0.5); }

.three:hover b {transform: perspective(100px) rotateY(0) translateZ(24px) scale(1); transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275); background: transparent;}

.three .sidenav {width: 150px;}

/*Two*/

.two .w {transform: perspective(100px) translateZ(-24px);}

.two b {transform: perspective(100px) rotateX(90deg) translateZ(24px) scale(1.5); opacity: 0; }

.two:hover b {transform: perspective(100px) rotateX(0) translateZ(24px) scale(1); transition: all .4s; opacity: 1;}

.two .sidenav {width: 150px;}

/*One*/

.one .w {transform: perspective(100px);}

.one b {transform: perspective(100px) rotateY(90deg); _opacity: 0; transform-origin: left center; _border: 1px solid white;}

.one:hover b {transform: perspective(100px) rotateX(0); transition: all .4s; opacity: 1;}

.one .sidenav {width: 150px;}

.one .sidenav span {float: left; width: 100px;}

/style

!--[if IE]

script src=""/script

![endif]--

/head

body

div class="htmleaf-container"

header class="htmleaf-header bgcolor-11"

div class="htmleaf-demo center"

a href="index.html"DEMO1/a

a href="index2.html" class="current"DEMO2/a

a href="index3.html"DEMO3/a

a href="index4.html"DEMO4/a

/div

div style="text-align:center;clear:both;"

script src="/gg_bd_ad_720x90.js" type="text/javascript"/script

script src="/follow.js" type="text/javascript"/script

/div

/header

div class="htmleaf-content bgcolor-8"

ul class="grid"

li class="one"

ul class="sidenav"

liai class="fa fa-check"/ispan class="w"bTasks/b/span/a/li

liai class="fa fa-inbox"/ispan class="w"bMessages/b/span/a/li

liai class="fa fa-pencil"/ispan class="w"bNew Post/b/span/a/li

liai class="fa fa-cog"/ispan class="w"bSettings/b/span/a/li

liai class="fa fa-star"/ispan class="w"bStarred/b/span/a/li

liai class="fa fa-power-off"/ispan class="w"bLogout/b/span/a/li

/ul

section

h2Door Opening/h2

img src="img/mb1.png"/

/section

/li

li class="two"

ul class="sidenav"

liai class="fa fa-check"/ispan class="w"bTasks/b/span/a/li

liai class="fa fa-inbox"/ispan class="w"bMessages/b/span/a/li

liai class="fa fa-pencil"/ispan class="w"bNew Post/b/span/a/li

liai class="fa fa-cog"/ispan class="w"bSettings/b/span/a/li

liai class="fa fa-star"/ispan class="w"bStarred/b/span/a/li

liai class="fa fa-power-off"/ispan class="w"bLogout/b/span/a/li

/ul

section

h2Flip Down/h2

img src="img/mb2.png"/

/section

/li

li class="three"

ul class="sidenav"

liai class="fa fa-check"/ispan class="w"bTasks/b/span/a/li

liai class="fa fa-inbox"/ispan class="w"bMessages/b/span/a/li

liai class="fa fa-pencil"/ispan class="w"bNew Post/b/span/a/li

liai class="fa fa-cog"/ispan class="w"bSettings/b/span/a/li

liai class="fa fa-star"/ispan class="w"bStarred/b/span/a/li

liai class="fa fa-power-off"/ispan class="w"bLogout/b/span/a/li

/ul

文章题目：html5菜单,html5下拉菜单
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