今天来看一组表单标签动画效果，希望可以对大家有所帮助，灵感来自于Inspiration for Text Input和Text Input Love，一并致谢。
效果照例放在Codepen，虽少效果较慢，但值得期待。在线编辑，下载收藏。
我们同样使用了haml来简化html书写。
#container -(1..15).each do %div.row %label %input{:type=>"text"} %span姓名 %label %input{:type=>"text"} %span性别 %label %input{:type=>"text"} %span邮箱css部分我们使用了scss，首先我们来搭建页面布局和基础设置。
/* 重置*/*, *:before, *:after { box-sizing: border-box; } /*容器设置*/#container{ counter-reset: counterA;}/*布局实现*/div.row{ position: relative; width: 100%; height:20vw; padding-left:15vw; counter-increment: counterA; &:before{ content:counter(counterA); color:rgba(255,255,255,.05); font-size:10vw; position: absolute; left:0px; } label{ position: relative; display: block; float: left; margin:8vw 2vw; input{ width:160px; height:30px; line-height:30px; background: rgba(255,255,255,.1); border:none; outline:none; border:1px solid #fff; color: #377D6A; padding:4px 10px; border-radius:4px; text-indent: 38px; transition: all .3s ease-in-out; ::-webkit-input-placeholder { color: transparent; } +span{ position: absolute; left:0; top:0; color:#fff; background: #7AB893; display: inline-block; padding: 7px 4px; transform-origin:left center; transform: perspective(300px); transition: all .3s ease-in-out; border-radius:4px 0 0 4px; } } input:focus, input:active { text-indent: 0; background: rgba(255,255,255,.2); ::-webkit-input-placeholder { color: #f00; } +span{ background: darken(#7AB893,20%); } } } /*设置背景色，随机颜色*/ @for $i from 1 through 15{ &:nth-child(#{$i}){ background:hsl(random(360),60%,30%); } } //设置每一行的动画效果 //&:nth-child(1){}} //设置每一行的动画效果 //&:nth-child(1){} //效果一，标签左移 &:nth-child(1){ input:focus, input:active{ border-radius:0 4px 4px 0; +span{ border-radius:4px 0 0 4px; transform: translateX(-100%); } } } //效果二，标签右移 &:nth-child(2){ input:focus, input:active{ +span{ border-radius:0 4px 4px 0; transform: translateX(300%); } } } //效果三，标签上移 &:nth-child(3){ input:focus, input:active{ text-indent: 0px; +span{ background-color: transparent; transform: translateY(-100%); } } } //效果四，标签下移 &:nth-child(4){ input:focus, input:active{ text-indent: 0px; +span{ background-color: transparent; transform: translateY(100%); } } } //效果五，标签上旋 &:nth-child(5){ input+span{ transform-origin:left bottom; } input:focus, input:active{ border-radius:0 4px 4px 0; text-indent: 20px; +span{ transform: rotate(-60deg); border-radius:0 4px 4px 0; } } } //效果六，标签下旋 &:nth-child(6){ input+span{ transform-origin:left bottom; } input:focus, input:active{ border-radius:0 4px 4px 0; +span{ animation:swing 1s; animation-fill-mode: forwards; border-radius:0 4px 4px 0; } } } //第6个动画 @keyframes swing{ 0% { transform: rotate(0); } 20% { transform: rotate(116deg); } 40% { transform: rotate(60deg); } 60% { transform: rotate(98deg); } 80% { transform: rotate(76deg); } 100% { transform: rotate(82deg); } } //效果七，标签左折 &:nth-child(7){ input+span{ transform-origin:right center; } input:focus, input:active{ border-radius:0 4px 4px 0; +span{ transform:perspective(300px) translateX(-100%) rotateY(60deg); } } } //效果八，标签左翻 &:nth-child(8){ input:focus, input:active{ border-radius:0 4px 4px 0; +span{ transform: rotateY(180deg); border-radius:0 4px 4px 0; } } } //效果九，标签上移变提示框 &:nth-child(9){ input{ +span{ background: transparent; &:before{ content:""; width:0; height:0; position: absolute; left:20px; bottom:-10px; border:5px solid #000; border-color:darken(#7AB893,20%) transparent transparent transparent; transition:all .3s; opacity: 0; } } } input:focus, input:active{ +span{ padding:3px 10px; border-radius:6px; transform:translateY(-150%); &:before{ opacity: 1; } } } } //效果十，标签上移，框变色 &:nth-child(10){ input{ border-width:1px 0; border-radius:0; +span{ background: transparent; } } input:focus, input:active{ border-width:2px 0; border-color:#000; +span{ background:transparent; transform:translateY(-120%); } } } //效果十一，标签左弹性&:nth-child(11){ input{ border-radius:0; border-width:1px 0; +span{ background: transparent; } } input:focus, input:active{ +span{ background:transparent; border:1px solid #fff; border-radius:0; border-width:0 0 0 1px; animation:halfLeft .6s ease-in; animation-fill-mode: forwards; } } @keyframes halfLeft{ 20%{ transform:translateX(-60%); } 40%{ transform:translateX(-42%); } 60%{ transform:translateX(-56%); } 80%{ transform:translateX(-46%); } 100%{ transform:translateX(-50%); } } } //效果十二，横线上移 &:nth-child(12){ input{ border-radius:0; border-width:0; background:transparent; +span{ background: transparent; &:before{ content:""; width:160px; height:1px; background-color: #fff; position: absolute; left:0; bottom:0; } } } input:focus, input:active{ +span{ background:transparent; transform:translateY(-100%); } } } //效果十三，边框动画 &:nth-child(13){ input{ border-radius:0; border:1px solid #fff; border-top-color:rgba(255,255,255,0); border-right-color:rgba(255,255,255,0); border-bottom-color:rgba(255,255,255,1); border-left-color:rgba(255,255,255,0); background:transparent; +span{ background: transparent; } } input:focus, input:active{ transition:none; animation:borderAnim 3s; animation-fill-mode:forward; border:1px solid #fff; +span{ background:transparent; transform:translateY(-100%); } } } @keyframes borderAnim{ 25%{ border-top-color:rgba(255,255,255,0); border-right-color:rgba(255,255,255,1); border-bottom-color:rgba(255,255,255,1); border-left-color:rgba(255,255,255,0); } 50%{ border-top-color:rgba(255,255,255,1); border-right-color:rgba(255,255,255,1); border-bottom-color:rgba(255,255,255,1); border-left-color:rgba(255,255,255,0); } 75%{ border-top-color:rgba(255,255,255,1); border-right-color:rgba(255,255,255,1); border-bottom-color:rgba(255,255,255,1); border-left-color:rgba(255,255,255,1); } } //效果十四，前后立体变化 &:nth-child(14){ input{ border-radius:0; border:1px solid #fff; transform-origin:left center; color:#fff; +span{ background: transparent; } } input:focus, input:active{ transform:scale(1.2); box-shadow:0px 0px 2px #000; color:#fff; border:2px solid #fff; +span{ background:transparent; transform:translateY(-100%) scale(0.8); } } } //效果十五，背景条纹动画 &:nth-child(15){ input{ border-radius:0; border:1px solid #fff; background-color: #026873; background-image: linear-gradient(90deg, rgba(255,255,255,.07) 50%, transparent 50%), linear-gradient(90deg, rgba(255,255,255,.13) 50%, transparent 50%), linear-gradient(90deg, transparent 50%, rgba(255,255,255,.17) 50%), linear-gradient(90deg, transparent 50%, rgba(255,255,255,.19) 50%); background-size: 13px, 29px, 37px, 53px; animation: shadowGo 10s linear infinite; animation-play-state:running; +span{ background: transparent; } } input:focus, input:active{ background-color: #137884; background-size: 13px, 29px, 37px, 53px; animation-play-state:paused; +span{ transform:translateY(-100%) scale(0.8); background:transparent; color:#137884; } } } @keyframes shadowGo{ 0% {background-position: 0 0} 100% {background-position: -600% 0%} }; 十五种动画效果，希望可以对您有所帮助。如果你耐着性子读到这里，是我的莫大荣幸，感谢感谢。
欢迎评论，欢迎拍砖。
