Adding transition effect to a background-image change on a div

Question

I'm changing the background-image of a div using jquery+css like this:

 var slide_images = ["http://foodnetwork.sndimg.com/content/dam/images/food/fullset/2014/2/7/1/FNM_030114-Spaghetti-Carbonara-Recipe-h_s4x3.jpg", "http://www.labrasseriefirenze.it/labrasserie/wp-content/uploads/2013/12/spaghetti-carbonara.jpg"]; var slide_count = 0; $(document).ready(function() { setInterval(function() { slide_count=++slide_count%slide_images.length; $('.slide_photo').css('background-image', 'url(\\''+slide_images[slide_count]+'\\')'); }, 4000); }); 

 .slide_photo { position: relative; top: 30px; width: 100%; height: 200px; background-image: url('http://foodnetwork.sndimg.com/content/dam/images/food/fullset/2014/2/7/1/FNM_030114-Spaghetti-Carbonara-Recipe-h_s4x3.jpg'); background-repeat: no-repeat; background-position: center center; background-size: 100% auto; transition: all .2s ease; } .slide_photo:hover { background-size: 110% auto; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <div class="slide_photo"></div> 

The question is : Is it possible to add a fade-in effect or transition to make the change smoother than it is?

Answer 1

How about some css3 animation like this

.slide_photo{
  -webkit-animation: fade 4s infinite;
  -moz-animation: fade 4s infinite;
  -o-animation: fade 4s infinite;
  animation: fade 4s infinite;
}

.slide_photo {
  position: relative;
  top: 30px;
  width: 100%;
  height: 200px;
  background-image: url('http://foodnetwork.sndimg.com/content/dam/images/food/fullset/2014/2/7/1/FNM_030114-Spaghetti-Carbonara-Recipe-h_s4x3.jpg');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 100% auto;
  transition: all .2s ease;
  -webkit-animation: fade 4s infinite;
  -moz-animation: fade 4s infinite;
  -o-animation: fade 4s infinite;
  animation: fade 4s infinite;
}
.slide_photo:hover {
  background-size: 110% auto;
}
@-webkit-keyframes fade {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@-moz-keyframes fade {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@-o-keyframes fade {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes fade {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

 var slide_images = ["http://foodnetwork.sndimg.com/content/dam/images/food/fullset/2014/2/7/1/FNM_030114-Spaghetti-Carbonara-Recipe-h_s4x3.jpg", "http://www.labrasseriefirenze.it/labrasserie/wp-content/uploads/2013/12/spaghetti-carbonara.jpg"]; var slide_count = 0; $(document).ready(function() { setInterval(function() { slide_count = ++slide_count % slide_images.length; $('.slide_photo').css('background-image', 'url(\\'' + slide_images[slide_count] + '\\')'); }, 4000); }); 

 .slide_photo { position: relative; top: 30px; width: 100%; height: 200px; background-image: url('http://foodnetwork.sndimg.com/content/dam/images/food/fullset/2014/2/7/1/FNM_030114-Spaghetti-Carbonara-Recipe-h_s4x3.jpg'); background-repeat: no-repeat; background-position: center center; background-size: 100% auto; transition: all .2s ease; -webkit-animation: fade 4s infinite; -moz-animation: fade 4s infinite; -o-animation: fade 4s infinite; animation: fade 4s infinite; } .slide_photo:hover { background-size: 110% auto; } @-webkit-keyframes fade { 0% { opacity: 0; } 50% { opacity: 1; } 100% { opacity: 0; } } @-moz-keyframes fade { 0% { opacity: 0; } 50% { opacity: 1; } 100% { opacity: 0; } } @-o-keyframes fade { 0% { opacity: 0; } 50% { opacity: 1; } 100% { opacity: 0; } } @keyframes fade { 0% { opacity: 0; } 50% { opacity: 1; } 100% { opacity: 0; } } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <div class="slide_photo"></div>