Update the background image to be smoother, with no text overlay

Question

Update the background image to be smoother, with no text overlay

I am working on a website where I need to smoothly change between background images. Here is the JavaScript code I currently have:

var bg=[
        'images/best.jpg',
        'images/61182.jpg',
        'images/bg.jpg'
       ];

   $('._container-1').css('background-image','url('+bg[2]+')');


window.setInterval(
    function(){
        img=bg.shift();bg.push(img);
        document.getElementsByClassName('_container-1')[0].style.backgroundImage='url('+img+')';
    },
    10000
);

However, I would like to make the image transitions slower and have attempted using jQuery's fadeIn/fadeOut methods like this:

window.setInterval(
        function(){
            img=bg.shift();
            bg.push(img);

        $('._container-1').fadeOut(600, function() {
            $('._container-1').css('background-image','url('+img+')');
            $('._container-1').fadeIn(600);
        });

    },
    17000
);

The challenge I am facing is that there are buttons and text within the container that also change with the images. I want the text and buttons to remain in the front at all times while only the background fades in/out. I hope my explanation makes sense.

If anyone can provide assistance, it would be greatly appreciated.

nina_berlini

javascript html css

Answer 1

Answer №1

To create the desired effect, I utilized 2 elements as background. You can also view the demo here.

HTML:

<div class="container">
  <div class="background"></div>
  <div class="background"></div>
  <button>
    Test button
  </button>
</div>

CSS:

.container { position: relative; line-height: 100px; }
  .container > .background,
  .container > .background { position: absolute; top: 0; right: 0; bottom: 0; left: 0; background-size: contain; z-index: 0; }

  .container > *:not(.background) { position: relative; z-index: 1; }

Javascript:

var bg=[
          'images/best.jpg',
          'images/61182.jpg',
          'images/bg.jpg'
       ];
var Transition = 1000;

$('.background').css('background-image','url('+bg[bg.length - 1]+')');
window.setInterval(
  function() {
    img=bg.shift();
    bg.push(img);

    var $Backgrounds = $('.background');
        $Backgrounds.eq(1).hide(0).css({
        'background-image': 'url('+img+')'
    }).fadeIn(Transition * .9);

    $Backgrounds.eq(0).show(0).fadeOut(Transition, function(){
        $(this).show(0).css({
        'background-image': 'url('+img+')'
      });
      $Backgrounds.eq(1).hide(0);
    });
  }, 2000
);

Answer 2

To create the desired effect, I utilized 2 elements as background. You can also view the demo here.

HTML:

<div class="container">
  <div class="background"></div>
  <div class="background"></div>
  <button>
    Test button
  </button>
</div>

CSS:

.container { position: relative; line-height: 100px; }
  .container > .background,
  .container > .background { position: absolute; top: 0; right: 0; bottom: 0; left: 0; background-size: contain; z-index: 0; }

  .container > *:not(.background) { position: relative; z-index: 1; }

Javascript:

var bg=[
          'images/best.jpg',
          'images/61182.jpg',
          'images/bg.jpg'
       ];
var Transition = 1000;

$('.background').css('background-image','url('+bg[bg.length - 1]+')');
window.setInterval(
  function() {
    img=bg.shift();
    bg.push(img);

    var $Backgrounds = $('.background');
        $Backgrounds.eq(1).hide(0).css({
        'background-image': 'url('+img+')'
    }).fadeIn(Transition * .9);

    $Backgrounds.eq(0).show(0).fadeOut(Transition, function(){
        $(this).show(0).css({
        'background-image': 'url('+img+')'
      });
      $Backgrounds.eq(1).hide(0);
    });
  }, 2000
);

Answer 3

Answer №2

Create a wrapper element that contains both the background and button elements with absolute positioning and specific CSS styles. This allows you to independently control and animate the background and buttons.

var bg = [
  'https://placehold.it/1001x201',
  'https://placehold.it/1002x202',
  'https://placehold.it/1003x203'
];

$('._container-1').css('background-image', 'url(' + bg[2] + ')');

window.setInterval(
  function() {
    img = bg.shift();
    bg.push(img);
    document.getElementsByClassName('_container-1')[0].style.backgroundImage = 'url(' + img + ')';
  },
  10000
);

window.setInterval(
  function() {
    img = bg.shift();
    bg.push(img);

    $('._container-1').fadeOut(600, function() {
      $('._container-1').css('background-image', 'url(' + img + ')');
      $('._container-1').fadeIn(600);
    });

  },
  17000
);

.wrapper {
  position: relative;
  width: 100%;
  height: 200px;
}
._container-1 {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-size: cover;
  background-position: top center;
}
.buttons {
  position: absolute;
  width: 100%;
  text-align: center;
  bottom: 0;
  left: 0;
}
button {
  background: red;
  padding: 5px 10px;
  border: 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
  <div class="_container-1"></div>
  <div class="buttons">
    <button type="button">
      Button A
    </button>
    <button type="button">
      Button B
    </button>
  </div>
</div>

Answer 4

Create a wrapper element that contains both the background and button elements with absolute positioning and specific CSS styles. This allows you to independently control and animate the background and buttons.

var bg = [
  'https://placehold.it/1001x201',
  'https://placehold.it/1002x202',
  'https://placehold.it/1003x203'
];

$('._container-1').css('background-image', 'url(' + bg[2] + ')');

window.setInterval(
  function() {
    img = bg.shift();
    bg.push(img);
    document.getElementsByClassName('_container-1')[0].style.backgroundImage = 'url(' + img + ')';
  },
  10000
);

window.setInterval(
  function() {
    img = bg.shift();
    bg.push(img);

    $('._container-1').fadeOut(600, function() {
      $('._container-1').css('background-image', 'url(' + img + ')');
      $('._container-1').fadeIn(600);
    });

  },
  17000
);

.wrapper {
  position: relative;
  width: 100%;
  height: 200px;
}
._container-1 {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-size: cover;
  background-position: top center;
}
.buttons {
  position: absolute;
  width: 100%;
  text-align: center;
  bottom: 0;
  left: 0;
}
button {
  background: red;
  padding: 5px 10px;
  border: 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
  <div class="_container-1"></div>
  <div class="buttons">
    <button type="button">
      Button A
    </button>
    <button type="button">
      Button B
    </button>
  </div>
</div>

Answer 5

Answer №3

I want to express my gratitude for your excellent solution. As someone who doesn't have extensive knowledge of jQuery, I have a question regarding the code you provided:

$Backgrounds.eq(1).hide(0).css({
    'background-image': 'url('+img+')'
}).fadeIn(Transition * .9);

Does this mean that the second "background-div" is initially hidden, then receives a new background image, and finally fades in? And does hide(0) indicate an immediate hiding action?

nina_berlini

Answer 6

I want to express my gratitude for your excellent solution. As someone who doesn't have extensive knowledge of jQuery, I have a question regarding the code you provided:

$Backgrounds.eq(1).hide(0).css({
    'background-image': 'url('+img+')'
}).fadeIn(Transition * .9);

Does this mean that the second "background-div" is initially hidden, then receives a new background image, and finally fades in? And does hide(0) indicate an immediate hiding action?

nina_berlini

Update the background image to be smoother, with no text overlay

Answer №1

Answer №2

Answer №3

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