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悬浮按钮

<!DOCTYPE html>
<html lang="zh-hans-cn">
<head>
    <meta charset="UTF-8">
    <meta name="Author" content="Rin">
    <title>右侧边栏圆形弹性按钮</title>
    <link rel="stylesheet" href="./css/asidenav.css">
</head>
<body style="background: black;">

<div>
    <svg width="0" height="0">
        <defs>
            <filter id="goo">
                <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur"></feGaussianBlur>
                <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 19 -9" result="goo"></feColorMatrix>
                <feComposite in="SourceGraphic" in2="goo" operator="atop"></feComposite>
            </filter>
        </defs>
    </svg>
    <div class="aside-nav bounceInUp animated" id="aside-nav">
        <label for="" class="aside-menu" title="按住拖动">菜单</label>

        <a href="javascript:void(0)" title="返回首页" class="menu-item menu-first">首页</a>
        <a href="javascript:void(0)" title="QQ咨询" class="menu-item menu-second">QQ</a>
        <a href="javascript:void(0)" title="一键预约" class="menu-item menu-third">预约</a>
        <a href="javascript:void(0)" title="微信公众号" class="menu-item menu-line menu-fourth">关注<br>微信</a> <!-- *跳到商家微信推广* -->
    </div>
</div>    

<script type="text/javascript" src="js/jquery-3.4.1.js"></script>
<script type="text/javascript" src="js/asidenav.js"></script>

</body>
</html>

html {
	-ms-text-size-adjust: 100%;
	-webkit-text-size-adjust: 100%;
	-webkit-font-smoothing: antialiased;
	font-size: 62.5%
}
body {
	font-family: "Helvetica Neue", Helvetica, "Microsoft YaHei", Arial, sans-serif;
	margin: 0;
	font-size: 1.6rem;
	background-color: #f9f9f9;
	color: #4E546B
}


.aside-nav {
	position: fixed;
	right: -50px;
	top: 350px;
	 260px;
	height: 260px;
	-webkit-filter: url(#goo);
	filter: url(#goo);
	-ms-user-select: none;
	-moz-user-select: none;
	-webkit-user-select: none;
	user-select: none;
	opacity: .75
}
.aside-nav.no-filter {
	-webkit-filter: none;
	filter: none
}
.aside-nav .aside-menu {
	position: absolute;
	 70px;
	height: 70px;
	-webkit-border-radius: 50%;
	border-radius: 50%;
	background: #f34444;
	left: 0;
	top: 0;
	right: 0;
	bottom: 0;
	margin: auto;
	text-align: center;
	line-height: 70px;
	color: #fff;
	font-size: 20px;
	z-index: 1;
	cursor: move
}
.aside-nav .menu-item {
	position: absolute;
	 60px;
	height: 60px;
	background-color: #FF7676;
	left: 0;
	top: 0;
	right: 0;
	bottom: 0;
	margin: auto;
	line-height: 60px;
	text-align: center;
	-webkit-border-radius: 50%;
	border-radius: 50%;
	text-decoration: none;
	color: #fff;
	-webkit-transition: background .5s, -webkit-transform .6s;
	transition: background .5s, -webkit-transform .6s;
	-moz-transition: transform .6s, background .5s, -moz-transform .6s;
	transition: transform .6s, background .5s;
	transition: transform .6s, background .5s, -webkit-transform .6s, -moz-transform .6s;
	font-size: 14px;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box
}
.aside-nav .menu-item:hover {
	background: #A9C734;
}
.aside-nav .menu-line {
	line-height: 20px;
	padding-top: 10px;
}
.aside-nav:hover {
	opacity: 1;
}
.aside-nav:hover .aside-menu {
	-webkit-animation: jello 1s;
	-moz-animation: jello 1s;
	animation: jello 1s
}
.aside-nav:hover .menu-first {
	-webkit-transform: translate3d(0, -135%, 0);
	-moz-transform: translate3d(0, -135%, 0);
	transform: translate3d(0, -135%, 0)
}
.aside-nav:hover .menu-second {
	-webkit-transform: translate3d(-120%, -70%, 0);
	-moz-transform: translate3d(-120%, -70%, 0);
	transform: translate3d(-120%, -70%, 0)
}
.aside-nav:hover .menu-third {
	-webkit-transform: translate3d(-120%, 70%, 0);
	-moz-transform: translate3d(-120%, 70%, 0);
	transform: translate3d(-120%, 70%, 0)
}
.aside-nav:hover .menu-fourth {
	-webkit-transform: translate3d(0, 135%, 0);
	-moz-transform: translate3d(0, 135%, 0);
	transform: translate3d(0, 135%, 0)
}
@-webkit-keyframes jello {
from, 11.1%, to {
-webkit-transform:none;
transform:none
}
22.2% {
-webkit-transform:skewX(-12.5deg) skewY(-12.5deg);
transform:skewX(-12.5deg) skewY(-12.5deg)
}
33.3% {
-webkit-transform:skewX(6.25deg) skewY(6.25deg);
transform:skewX(6.25deg) skewY(6.25deg)
}
44.4% {
-webkit-transform:skewX(-3.125deg) skewY(-3.125deg);
transform:skewX(-3.125deg) skewY(-3.125deg)
}
55.5% {
-webkit-transform:skewX(1.5625deg) skewY(1.5625deg);
transform:skewX(1.5625deg) skewY(1.5625deg)
}
66.6% {
-webkit-transform:skewX(-.78125deg) skewY(-.78125deg);
transform:skewX(-.78125deg) skewY(-.78125deg)
}
77.7% {
-webkit-transform:skewX(0.390625deg) skewY(0.390625deg);
transform:skewX(0.390625deg) skewY(0.390625deg)
}
88.8% {
-webkit-transform:skewX(-.1953125deg) skewY(-.1953125deg);
transform:skewX(-.1953125deg) skewY(-.1953125deg)
}
}
@-moz-keyframes jello {
from, 11.1%, to {
-moz-transform:none;
transform:none
}
22.2% {
-moz-transform:skewX(-12.5deg) skewY(-12.5deg);
transform:skewX(-12.5deg) skewY(-12.5deg)
}
33.3% {
-moz-transform:skewX(6.25deg) skewY(6.25deg);
transform:skewX(6.25deg) skewY(6.25deg)
}
44.4% {
-moz-transform:skewX(-3.125deg) skewY(-3.125deg);
transform:skewX(-3.125deg) skewY(-3.125deg)
}
55.5% {
-moz-transform:skewX(1.5625deg) skewY(1.5625deg);
transform:skewX(1.5625deg) skewY(1.5625deg)
}
66.6% {
-moz-transform:skewX(-.78125deg) skewY(-.78125deg);
transform:skewX(-.78125deg) skewY(-.78125deg)
}
77.7% {
-moz-transform:skewX(0.390625deg) skewY(0.390625deg);
transform:skewX(0.390625deg) skewY(0.390625deg)
}
88.8% {
-moz-transform:skewX(-.1953125deg) skewY(-.1953125deg);
transform:skewX(-.1953125deg) skewY(-.1953125deg)
}
}
@keyframes jello {
from, 11.1%, to {
-webkit-transform:none;
-moz-transform:none;
transform:none
}
22.2% {
-webkit-transform:skewX(-12.5deg) skewY(-12.5deg);
-moz-transform:skewX(-12.5deg) skewY(-12.5deg);
transform:skewX(-12.5deg) skewY(-12.5deg)
}
33.3% {
-webkit-transform:skewX(6.25deg) skewY(6.25deg);
-moz-transform:skewX(6.25deg) skewY(6.25deg);
transform:skewX(6.25deg) skewY(6.25deg)
}
44.4% {
-webkit-transform:skewX(-3.125deg) skewY(-3.125deg);
-moz-transform:skewX(-3.125deg) skewY(-3.125deg);
transform:skewX(-3.125deg) skewY(-3.125deg)
}
55.5% {
-webkit-transform:skewX(1.5625deg) skewY(1.5625deg);
-moz-transform:skewX(1.5625deg) skewY(1.5625deg);
transform:skewX(1.5625deg) skewY(1.5625deg)
}
66.6% {
-webkit-transform:skewX(-.78125deg) skewY(-.78125deg);
-moz-transform:skewX(-.78125deg) skewY(-.78125deg);
transform:skewX(-.78125deg) skewY(-.78125deg)
}
77.7% {
-webkit-transform:skewX(0.390625deg) skewY(0.390625deg);
-moz-transform:skewX(0.390625deg) skewY(0.390625deg);
transform:skewX(0.390625deg) skewY(0.390625deg)
}
88.8% {
-webkit-transform:skewX(-.1953125deg) skewY(-.1953125deg);
-moz-transform:skewX(-.1953125deg) skewY(-.1953125deg);
transform:skewX(-.1953125deg) skewY(-.1953125deg)
}
}

.animated {
	-webkit-animation-duration: 1s;
	-moz-animation-duration: 1s;
	animation-duration: 1s;
	-webkit-animation-fill-mode: both;
	-moz-animation-fill-mode: both;
	animation-fill-mode: both
}

@-webkit-keyframes bounceInUp {
from, 60%, 75%, 90%, to {
-webkit-animation-timing-function:cubic-bezier(0.215, .61, .355, 1);
animation-timing-function:cubic-bezier(0.215, .61, .355, 1)
}
from {
	opacity: 0;
	-webkit-transform: translate3d(0, 800px, 0);
	transform: translate3d(0, 800px, 0)
}
60% {
opacity:1;
-webkit-transform:translate3d(0, -20px, 0);
transform:translate3d(0, -20px, 0)
}
75% {
-webkit-transform:translate3d(0, 10px, 0);
transform:translate3d(0, 10px, 0)
}
90% {
-webkit-transform:translate3d(0, -5px, 0);
transform:translate3d(0, -5px, 0)
}
to {
	-webkit-transform: translate3d(0, 0, 0);
	transform: translate3d(0, 0, 0)
}
}
@-moz-keyframes bounceInUp {
from, 60%, 75%, 90%, to {
-moz-animation-timing-function:cubic-bezier(0.215, .61, .355, 1);
animation-timing-function:cubic-bezier(0.215, .61, .355, 1)
}
from {
	opacity: 0;
	-moz-transform: translate3d(0, 800px, 0);
	transform: translate3d(0, 800px, 0)
}
60% {
opacity:1;
-moz-transform:translate3d(0, -20px, 0);
transform:translate3d(0, -20px, 0)
}
75% {
-moz-transform:translate3d(0, 10px, 0);
transform:translate3d(0, 10px, 0)
}
90% {
-moz-transform:translate3d(0, -5px, 0);
transform:translate3d(0, -5px, 0)
}
to {
	-moz-transform: translate3d(0, 0, 0);
	transform: translate3d(0, 0, 0)
}
}
@keyframes bounceInUp {
from, 60%, 75%, 90%, to {
-webkit-animation-timing-function:cubic-bezier(0.215, .61, .355, 1);
-moz-animation-timing-function:cubic-bezier(0.215, .61, .355, 1);
animation-timing-function:cubic-bezier(0.215, .61, .355, 1)
}
from {
	opacity: 0;
	-webkit-transform: translate3d(0, 800px, 0);
	-moz-transform: translate3d(0, 800px, 0);
	transform: translate3d(0, 800px, 0)
}
60% {
opacity:1;
-webkit-transform:translate3d(0, -20px, 0);
-moz-transform:translate3d(0, -20px, 0);
transform:translate3d(0, -20px, 0)
}
75% {
-webkit-transform:translate3d(0, 10px, 0);
-moz-transform:translate3d(0, 10px, 0);
transform:translate3d(0, 10px, 0)
}
90% {
-webkit-transform:translate3d(0, -5px, 0);
-moz-transform:translate3d(0, -5px, 0);
transform:translate3d(0, -5px, 0)
}
to {
	-webkit-transform: translate3d(0, 0, 0);
	-moz-transform: translate3d(0, 0, 0);
	transform: translate3d(0, 0, 0)
}
}
.bounceInUp {
	-webkit-animation-name: bounceInUp;
	-moz-animation-name: bounceInUp;
	animation-name: bounceInUp;
	-webkit-animation-delay: 1s;
	-moz-animation-delay: 1s;
	animation-delay: 1s
}

@media screen and (max-640px) {
.aside-nav {display: none!important}
}
@media screen and (min-641px) and (max-1367px) {
.aside-nav {top: 120px}
}

var ua=navigator.userAgent; /Safari|iPhone/i.test(ua)&&0==/chrome/i.test(ua)&&$("#aside-nav").addClass("no-filter");
    var drags={down:!1,x:0,y:0,winWid:0,winHei:0,clientX:0,clientY:0},
        asideNav=$("#aside-nav")[0],
        getCss=function(a,e){return a.currentStyle?a.currentStyle[e]:document.defaultView.getComputedStyle(a,!1)[e]};
    $("#aside-nav").on("mousedown",function(a){
                 drags.down=!0,
                 drags.clientX=a.clientX,
                 drags.clientY=a.clientY,
                 drags.x=getCss(this,"right"),
                 drags.y=getCss(this,"top"),
                 drags.winHei=$(window).height(),
                 drags.winWid=$(window).width(),
                     $(document).on("mousemove",function(a){
                          if(drags.winWid>640&&(a.clientX<120||a.clientX>drags.winWid-50))//50px
                              return !1 /*,console.log(!1)*/;
                          if(a.clientY<180||a.clientY>drags.winHei-120)//导航高度
                                return!1;
                     var e=a.clientX-drags.clientX,
                         t=a.clientY-drags.clientY;
                         asideNav.style.top=parseInt(drags.y)+t+"px"; 
                         asideNav.style.right=parseInt(drags.x)-e+"px";
                 })
    }).on("mouseup",function(){drags.down=!1,$(document).off("mousemove")});

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原文地址：https://www.cnblogs.com/sweeeper/p/11580155.html