jquery实现带滚动进度的返回顶部按钮效果代码-html代码-BFW代码库

代码语言：html

代码描述：jquery实现带滚动进度的返回顶部按钮效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/bootstrap.4.3.1.min.css">
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/unicons.css">
  
<style>
/* Please ❤ this if you like it! */



@import url('https://fonts.googleapis.com/css?family=Muli:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i&subset=latin-ext,vietnamese');
@import url('https://fonts.googleapis.com/css?family=Raleway:100,100i,200,200i,300,300i,400,400i,500,500i,600,600i,700,700i,800,800i,900,900i&subset=latin-ext');



:root {
        font-size: 20px;
        --red: #da2c4d;
        --yellow: #f8ab37;
        --green: #2ecc71;
        --white: #ffffff;
        --grey-light: #f2f7f9;
        --grey: #ecedf3;
        --black: #080808;
        --black-blue: #1f2029;
        --black-blue-light: #353746;
        --black-blue-light-2: #404255;
        --black-blue-light-3: #4b4d64;
        --black-light: #424455;
}
body{
    font-family: 'Raleway', sans-serif;
        font-size: 16px;
        font-weight: 500;
        line-height: 1.65;
        color: var(--grey);
        background-color: var(--black-blue);
        overflow-x: hidden;
        letter-spacing: 0.2px;
        -webkit-transition: all 200ms linear;
        transition: all 200ms linear; 
        text-rendering: optimizeLegibility !important;
        -webkit-font-smoothing: antialiased !important;
}
body.light{
        color: var(--black-light);
}
h1{
    font-family: 'Muli', sans-serif;
        font-size: 12vw;
        font-weight: 900;
        line-height: 1;
        color: var(--white);
        -webkit-transition: all 200ms linear;
        transition: all 200ms linear; 
}
body.light h1{
        color: var(--black);
}
body.light{
        background-color: var(--white);
}
.navbar-brand{
        height: 36px;
        position: fixed;
        top: 50px;
        left: 70px;
        z-index: 3333;
        width: auto;
        display: inline-block;
        margin: 0;
        padding: 0;
        -webkit-transition : all 0.3s ease-out;
        transition : all 0.3s ease-out;
}
.navbar-brand::before{
        position: absolute;
        content: '';
        top: -13px;
        left: 50%;
        width: 80px;
        transform: translateX(-50%);
        height: calc(100% + 26px);
        opacity: 0;
        z-index: -1;
        background-image: linear-gradient(260deg, var(--grey), var(--grey-light));
        animation: border-transform 10s linear infinite alternate forwards;
        -webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.navbar-brand::after{
        position: absolute;
        content: '';
        top: -13px;
        left: 50%;
        width: 80px;
        transform: translateX(-50%);
        height: calc(100% + 26px);
        opacity: 1;
        z-index: -1;
        background-image: linear-gradient(160deg, var(--black-blue-light-3), var(--black-blue-light));
        animation: border-transform 10s linear infinite alternate forwards;
        -webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.navbar-brand img{
        padding: 7px 0;
        height: 100%;
        width: auto;
        display: block;
        -webkit-transition : all 0.3s ease-out;
        transition : all 0.3s ease-out;
}
@-webkit-keyframes border-transform{
    0%,100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; } 
        14% { border-radius: 40% 60% 54% 46% / 49% 60% 40% 51%; } 
        28% { border-radius: 54% 46% 38% 62% / 49% 70% 30% 51%; } 
        42% { border-radius: 61% 39% 55% 45% / 61% 38% 62% 39%; } 
        56% { border-radius: 61% 39% 67% 33% / 70% 50% 50% 30%; } 
        70% { border-radius: 50% 50% 34% 66% / 56% 68% 32% 44%; } 
        84% { border-radius: 46% 54% 50% 50% / 35% 61% 39% 65%; } 
}
@keyframes border-transform{
    0%,100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; } 
        14% { border-radius: 40% 60% 54% 46% / 49% 60% 40% 51%; } 
        28% { border-radius: 54% 46% 38% 62% / 49% 70% 30% 51%; } 
        42% { border-radius: 61% 39% 55% 45% / 61% 38% 62% 39%; } 
        56% { border-radius: 61% 39% 67% 33% / 70% 50% 50% 30%; } 
        70% { border-radius: 50% 50% 34% 66% / 56% 68% 32% 44%; } 
        8.........完整代码请登录后点击上方下载按钮下载查看