大部分的网站导航栏都是在网页的顶端，这类导航栏看起来非常一般，而有些在左侧竖着显示的导航栏就比较好看一些了，但是今天为大家介绍的是左侧竖条导航栏实现点击出现的效果，也就是刚开始只显示导航，不显示分类栏，而点击导航就可以显示分类栏了，下面一起来看下源代码的实现吧。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="js/jquery.min.js"></script>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<style>
html,
body {
padding: 0;
margin: 0;
}
main {
width: 100%;
}
.main {
width: 100%;
min-height: 100vh;
background-color: #ccc;
}
.x_left {
position: fixed;
left: 0;
top: 100px;
width: 100px;
/* border: 1px solid red; */
}
.x_left_title {
padding: 10px 0;
margin: 2px 0;
width: 50px;
background-color: white;
box-shadow: 0 0 5px 1px rgb(99, 99, 99);
display: flex;
justify-content: center;
align-items: center;
position: relative;
}
.x_left_main {
display: flex;
flex-flow: column;
/* border: 1px solid red; */
position: relative;
width: 0;
}
.x_left_main span {
padding: 10px 0;
margin: 3px 0;
width: 100px;
background-color: white;
box-shadow: 0 0 5px 1px rgb(122, 147, 160);
display: flex;
justify-content: center;
align-items: center;
position: relative;
left: -100px;
}
</style></head>
<body>
<main>
<div class="main">
<div class="x_left">
<div class="x_left_title">
导航
</div>
<div class="x_left_main">
<span>aaa11111111</span>
<span>aaa22222222</span>
<span>aaa33333333</span>
<span>aaa44444444</span>
<span>aaa55555555</span>
<span>aaa66666666</span>
<span>aaa77777777</span>
<span>aaa88888888</span>
<span>aaa99999999</span>
</div>
</div>
</div>
</main>
<script>
var show = "";
var hidden = ""
var hidden_top = "";
var hidden_top_num = "";
var hidden_bottom_num = "";
var length = $(".x_left_main span").length;
var num = 0;
var whether = 99;
var qsb = 99
$(".x_left_title").click(function(){
if(whether==99&&qsb==99){
qsb = 1
$(this).stop().animate({width:"100px"},1000)
var num = 0;
$(".x_left_main span").eq(num).stop().animate({
left:"0"
},150)
show = setInterval(function(){
if(num!=length){
num++
$(".x_left_main span").eq(num).stop().animate({
left:"0"
},150)
}else{
clearInterval(show)
whether = 1
qsb = 99
}
},150)
}else{
if(qsb==99&&whether==1){
qsb = 1
$(this).stop().animate({width:"50px"},1000)
var num = 0;
$(".x_left_main span").eq(num).stop().animate({
left:"-100px"
},150)
show = setInterval(function(){
if(num!=length){
num++
$(".x_left_main span").eq(num).stop().animate({
left:"-100px"
},150)
}else{
clearInterval(show)
whether = 99
qsb = 99
}
},150)
}
}
})
$(".x_left_main span").each(function(i){
$(this).click(function(){
$(".x_left_title").stop().animate({width:"50px"},1000)
hidden_top_num = i
hidden_bottom_num = i
$(this).stop().animate({
left:"-100px"
})
hidden_top = setInterval(function(){
if(hidden_top_num!=0){
hidden_top_num--
$(".x_left_main span").eq(hidden_top_num).stop().animate({
left:"-100px"
})
}else{
clearInterval(hidden_top)
whether = 99
qsb = 99
}
},150)
hidden_bottom = setInterval(function(){
if(hidden_bottom_num!=length){
hidden_bottom_num++
$(".x_left_main span").eq(hidden_bottom_num).stop().animate({
left:"-100px"
})
}else{
clearInterval(hidden_bottom)
whether = 99
qsb = 99
}
},150)
})
})
</script></body>
</html>
看到这里详细大家已经可以预测出实际效果了吧，这种效果是不是要比传统的导航栏更加具有吸引力呢?那么大家也赶紧动手尝试一下吧，如果还存在不理解的地方，可以留言咨询哦。
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原文地址：http://blog.51cto.com/13686158/2114054