I can make an element with an opacity of zero fade in by changing its class to .elementToFadeInAndOut with the following css:
.elementToFadeInAndOut {
opacity: 1;
transition: opacity 2s linear;
}
Is there a way I can make the element fade out after it fades in by editing css for this same class?
The jQuery fadeToggle() method toggles between the fadeIn() and fadeOut() methods. If the elements are faded out, fadeToggle() will fade them in. If the elements are faded in, fadeToggle() will fade them out.
Use animation and transition property to create a fade-in effect on page load using CSS. Method 1: Using CSS animation property: A CSS animation is defined with 2 keyframes. One with the opacity set to 0, the other with the opacity set to 1.
You can transition background-image . Use the CSS below on the img element: -webkit-transition: background-image 0.2s ease-in-out; transition: background-image 0.2s ease-in-out; This is supported natively by Chrome, Opera and Safari.
Use css @keyframes
.elementToFadeInAndOut {
opacity: 1;
animation: fade 2s linear;
}
@keyframes fade {
0%,100% { opacity: 0 }
50% { opacity: 1 }
}
here is a DEMO
.elementToFadeInAndOut {
width:200px;
height: 200px;
background: red;
-webkit-animation: fadeinout 4s linear forwards;
animation: fadeinout 4s linear forwards;
}
@-webkit-keyframes fadeinout {
0%,100% { opacity: 0; }
50% { opacity: 1; }
}
@keyframes fadeinout {
0%,100% { opacity: 0; }
50% { opacity: 1; }
}
<div class=elementToFadeInAndOut></div>
Reading: Using CSS animations
You can clean the code by doing this:
.elementToFadeInAndOut {
width:200px;
height: 200px;
background: red;
-webkit-animation: fadeinout 4s linear forwards;
animation: fadeinout 4s linear forwards;
opacity: 0;
}
@-webkit-keyframes fadeinout {
50% { opacity: 1; }
}
@keyframes fadeinout {
50% { opacity: 1; }
}
<div class=elementToFadeInAndOut></div>
If you need a single fadeIn/Out without an explicit user action (like a mouseover/mouseout) you may use a CSS3 animation
: http://codepen.io/anon/pen/bdEpwW
.elementToFadeInAndOut {
animation: fadeInOut 4s linear 1 forwards;
}
@keyframes fadeInOut {
0% {
opacity: 0;
}
50% {
opacity: 1;
}
100% {
opacity: 0;
}
}
By setting animation-fill-mode: forwards
the animation will retain its last keyframe
By setting animation-iteration-count: 1
the animation will run just once (change this value if you need to repeat the effect more than once)
I found this link to be useful: css-tricks fade-in fade-out css.
Here's a summary of the csstricks post:
CSS classes:
.m-fadeOut {
visibility: hidden;
opacity: 0;
transition: visibility 0s linear 300ms, opacity 300ms;
}
.m-fadeIn {
visibility: visible;
opacity: 1;
transition: visibility 0s linear 0s, opacity 300ms;
}
In React:
toggle(){
if(true condition){
this.setState({toggleClass: "m-fadeIn"});
}else{
this.setState({toggleClass: "m-fadeOut"});
}
}
render(){
return (<div className={this.state.toggleClass}>Element to be toggled</div>)
}
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