<!-- Try writing Invalid email -->
<div class="form-wrap">
<div class="input">
<label for="mail">Email address</label>
<input type="email" name="mail" autocomplete="off">
</div>
<svg class="line">
</svg>
</div>
body {
background: #002b36;
font-family: 'Roboto Mono', monospace;
}
*:focus {
outline: none;
}
.wrap {
height: 100%;
width: 100%;
overflow: hidden;
padding: 15px;
}
.form-wrap {
position: relative;
height: 50px;
width: 400px;
margin: 100px auto 0;
}
input {
color: #fff;
position: absolute;
width: 100%;
height: 100%;
left: 0;
padding-top: 5px;
border: none;
font-size: 1em;
font-weight: 200;
background: none;
opacity: 0;
font-family: 'Roboto Mono', monospace;
transition: all 0.5s ease;
}
.active input {
opacity: 1;
transition: all 0.5s ease 0.5s;
}
svg {
position: absolute;
left: 0;
top: 100%;
overflow: visible;
fill: none;
z-index: 5;
stroke: #fff;
stroke-width: 3px;
}
label {
color: #fff;
position: absolute;
top: 15px;
font-size: 1.3em;
transition: all 0.5s ease;
}
.active label {
top: 0px;
font-size: 1em;
color: #FF5252;
transition: all 0.5s ease 0.6s;
}
.active + svg {
stroke: #FF5252;
transition: stroke 0.4s ease 0.6s;
}
.input {
height: 100%;
width: 100%;
position: relative;
overflow: hidden;
}
.input:before {
content: "";
position: absolute;
height: 26px;
width: 3px;
right: 15px;
bottom: -50px;
background-color: transparent;
transform-origin: inherit;
transform: rotate(0deg);
transition: transform 0.4s ease, bottom 0.4s ease 0.3s, background-color 0.2s ease 0.6s;
}
.input:after {
content: "";
position: absolute;
height: 26px;
width: 3px;
right: 15px;
bottom: -50px;
visibility: hidden;
background-color: transparent;
transform-origin: inherit;
transform: rotate(0deg);
transition: transform 0.4s ease, visibility 0.4s ease, bottom 0.4s ease 0.3s, background-color 0.2s ease 0.6s, height 0.2s ease 0.6s;
}
.valid:before {
bottom: 10px;
right: 16px;
visibility: visible;
background-color: #4CAF50;
transform-origin: inherit;
transform: rotate(40deg);
transition: bottom 0.4s ease, transform 0.4s ease 0.3s;
}
.valid:after {
bottom: 10px;
height: 15px;
visibility: visible;
background-color: #4CAF50;
transform-origin: inherit;
transform: rotate(-45deg);
transition: bottom 0.4s ease, visibility 0.4s ease 0.3s, transform 0.4s ease 0.3s;
}
.invalid:before {
bottom: 10px;
visibility: visible;
background-color: #ff5252;
transform: rotate(40deg);
transition: bottom 0.4s ease, transform 0.4s ease 0.3s;
}
.invalid:after {
height: 26px;
bottom: 10px;
visibility: visible;
background-color: #ff5252;
transform: rotate(-45deg);
transition: bottom 0.4s ease, visibility 0.4s ease 0.3s, transform 0.4s ease 0.3s;
}
'use strict';
var textInput = document.querySelector('input');
var inputWrap = textInput.parentElement ;
var inputWidth = parseInt(getComputedStyle(inputWrap).width);
var svgText = Snap('.line');
var qCurve = inputWidth / 2; // For correct curving on diff screen sizes
var textPath = svgText.path("M0 0 " + inputWidth + " 0");
var textDown = function(){
textPath.animate({d:"M0 0 Q" + qCurve + " 40 " + inputWidth + " 0"},150,mina.easeout);
};
var textUp = function(){
textPath.animate({d:"M0 0 Q" + qCurve + " -30 " + inputWidth + " 0"},150,mina.easeout);
};
var textSame = function(){
textPath.animate({d:"M0 0 " + inputWidth + " 0"},200,mina.easein);
};
var textRun = function(){
setTimeout(textDown, 200 );
setTimeout(textUp, 400 );
setTimeout(textSame, 600 );
};
(function(){
textInput.addEventListener('focus', function(){
var parentDiv = this.parentElement;
parentDiv.classList.add('active');
textRun();
this.addEventListener('blur', function(){
var rg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.]{3,9})+\.([A-Za-z]{2,4})$/;
this.value == 0 ? parentDiv.classList.remove('active') : null;
!rg.test(this.value) && this.value != 0 ?
(parentDiv.classList.remove('valid'), parentDiv.classList.add('invalid'), parentDiv.style.transformOrigin="center")
: rg.test(this.value) && this.value != 0 ?
(parentDiv.classList.add('valid'), parentDiv.classList.remove('invalid'), parentDiv.style.transformOrigin="bottom") :null;
});
parentDiv.classList.remove('valid', 'invalid')
});
})();