Achieve a parallax effect with background images while scrolling, all without relying on the

Is there a way to achieve a parallax effect on an image without using the css background and background-attachment properties?

I have an img tag nested inside a div and I want to implement a parallax scroll effect on the image. Here is the code snippet:

function resize_div()
{
    var image_height = $('.project-image img').height();

    var div_height = $('.project-image').height();
    var window_height = $(window).height();
    var window_width = $(window).width();

   
        $('.project-image').css('height', window_height - 80);
    
}

$(window).resize(function () {
        resize_div();
});
.project-details
{
  width:100%;
}
.project-image{
  text-align:center
}
.project-description
{
  line-height:15px;
  margin:0 0 10px
}
.img-responsive
{
  height: auto;
  max-width: 100%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="project-details">
  <div class="project-image">
   <img src="http://placehold.it/350X225" class="img-responsive">
  </div>  
  <h1>
  Project Title
  </h1>
  <p class="project-description">
  Lorem Ipsum is simply dummy text of the printing and typesetting industry... (continued)

issue: The image cannot be placed in the background of a div, so it must be done using the img tag only.

Update: The image is centered horizontally within the div, and both the image and the div sizes are adjusted when the browser is resized or the device is rotated using custom JavaScript. Attempts with position:absolute and position:fixed have not been successful.

https://i.sstatic.net/2WUzE.jpg

Update-2: Check out the fiddle link for more details.

htmlcssscroll

Answer №1

Not long ago, I created a couple of examples showcasing a parallax effect that closely resembles what you're interested in achieving:

  • this demonstration utilizes simple jQuery to update the image and title position as you scroll
  • this sample relies solely on CSS with 3D positioning to simulate the parallax effect on the image

I believe you don't necessarily need JavaScript to resize the image upon loading. Here's an example incorporating your code along with the jQuery snippet from the first pen I shared: 

$( document ).ready(function() {
var $window = $(window);
function scroll_elements(){
  var scroll = $window.scrollTop();
  var scrollLayer = scroll/1.4;
  
  $(".project-image").css(
    "-webkit-transform","translate3d(0," +  scrollLayer  + "px,0)",
            "transform","translate3d(0," +  scrollLayer  + "px,0)"
  );
}

$window.scroll(scroll_elements);
});
.project-image {
  position:relative;
  z-index:1;
}
.img-responsive {
  display:block;
  max-width:100%; 
  height:auto;
  margin:0 auto;
}
h1, .project-description {
  position:relative;
  max-width:500px;
  z-index:2;
  background:rgba(255,255,255,.7);
  margin:0 auto;
  padding:10px 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="project-details">
  <div class="project-image">
   <img src="http://placehold.it/350X225" class="img-responsive">
  </div>  
  <h1>
  Project Title
  </h1>
  <p class="project-description">
  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  <br/>
  <br/>
  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  <br/>
  <br/>
  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  </p>
</div>

Answer №2

After experimenting a bit, I have found what seems to be the most effective solution in this scenario: 

*{
  margin: 0;
  padding: 0;
}

#image {
  width: 100%;
  position: fixed;
}

#image2 {
  width: 100%;
  position: relative;
  visibility:hidden;
}
#prl {
  position: relative;
  background-color: white;
}
  <img src="http://placehold.it/350X225" id="image">
  <img src="http://placehold.it/350X225" id="image2">

<div id="prl">
  <p>
  sdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl...

In this approach, no JavaScript is required as I am utilizing the same image twice - once for the fixed disappearing effect and once simply to reserve empty space.

Answer №3

Through my exploration, I stumbled upon this hidden gem.

$('.img-parallax').each(function(){
  var img = $(this);
  var imgParent = $(this).parent();
  function parallaxImg () {
    var speed = img.data('speed');
    var imgY = imgParent.offset().top;
    var winY = $(this).scrollTop();
    var winH = $(this).height();
    var parentH = imgParent.innerHeight();


    // The next pixel to show on screen      
    var winBottom = winY + winH;

    // If block is shown on screen
    if (winBottom > imgY && winY < imgY + parentH) {
      // Number of pixels shown after block appear
      var imgBottom = ((winBottom - imgY) * speed);
      // Max number of pixels until block disappear
      var imgTop = winH + parentH;
      // Porcentage between start showing until disappearing
      var imgPercent = ((imgBottom / imgTop) * 100) + (50 - (speed * 50));
    }
    img.css({
      top: imgPercent + '%',
      transform: 'translate(-50%, -' + imgPercent + '%)'
    });
  }
  $(document).on({
    scroll: function () {
      parallaxImg();
    }, ready: function () {
      parallaxImg();
    }
  });
});
@import url(https://fonts.googleapis.com/css?family=Amatic+SC:400,700);
html, body{
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  font-family: 'Amatic SC', cursive;
}
.block{
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  font-size: 16px;
}
.block h2{
  position: relative;
  display: block;
  text-align: center;
  margin: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10vw;
  color: white;
  font-weight: 400;
}
.img-parallax {
  width: 100vmax;
  z-index: -1;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%,0);
  pointer-events: none
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?image=1005" data-speed="-1" class="img-parallax">
  <h2>Parallax Speed -1</h2>
</div>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?image=1067" data-speed="1" class="img-parallax">
  <h2>Parallax Speed 1</h2>
</div>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?gravity=center" data-speed="-0.25" class="img-parallax">
  <h2>Parallax Speed -0.25</h2>
</div>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?image=1080" data-speed="0.25" class="img-parallax">
  <h2>Parallax Speed 0.25</h2>
</div>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?random" data-speed="-0.75" class="img-parallax">
  <h2>Parallax Speed -0.75</h2>
</div>
<div class="block">
  <img src="https://unsplash.it/1920/1920/?blur" data-speed="0.75" class="img-parallax">
  <h2>Parallax Speed 0.75</h2>
</div>

Answer №4

After receiving approval from Nishant Solanki, this sample code is guaranteed to function seamlessly across all browsers.

function myFunction() {
speed = 0; 
  speed2 = -1;
  /**
  @ speed
  positive: moves up faster than background
  0: scrolls same as background
  negative: moves down faster
  -1: same as position: fixed
  try different ones to see it in action and you should figure it out
  
  P.S.
  you can apply different speeds to multiple alements to achieve what ever you desire
  */
y = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
  cont = document.getElementById("prl");
  cont.style.top = (0 - Math.round(y * speed)) +"px";
  img = document.getElementById("image");
  img.style.top = (0 - Math.round(y * speed2)) +"px";
}
*{
  margin: 0;
  padding: 0;
}

#image {
  width: 100%;
  position: relative;
}
#prl {
  position: relative;
  background-color: white;
}
<body onscroll="myFunction()">

  <img src="http://placehold.it/350X225" id="image">

<div id="prl">
  <p>
  sdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda klsadsdf sfkdl ksda...

Answer №5

Is it possible to utilize a straightforward approach like $(window).scroll to detect window scroll, and then easily apply .addClass, .removeClass, or .toggleClass? By adding new styles to the element with scrolling, you can proceed to adjust the position of your img.

$(document).ready(function(){
    $(window).scroll(function(){
        $('img').toggleClass('scrolled'); 
    })
})

.scrolled { 
  position: absolute;
  z-index: 777; // determine correct value
  top: 102px; // customize as needed
  left: 3px; // adjust based on requirements
}

Note:// A cleaner practice would be to achieve this effect using a background image and adjusting its position with .scroll. If you can refactor some code to implement this method, it may be beneficial in the long run. Alternatively, you can employ jQuery .scroll and .toggleClass while modifying the z-index: and position: properties. For responsive layouts, CSS3 is recommended; if the position: property isn't functioning correctly, there might be a conflict stemming from excessive CSS or JS affecting the relevant elements.

Answer №6

Using CSS, it's best to steer clear of both fixed and absolute positioning. Embrace the freedom it brings.

function myFunction() {
  fixIt = document.getElementById('project-image');
  fixIt.style.top = 2 * Math.round(document.body.scrollTop) + "px";
}
* {
  margin: 0;
  padding: 0;
}

#project-image {
  width: 100%;
  position: relative;
}

.project-description,
.project-details>h1 {
  position: relative;
  z-index: 1;
  background: white;
}

.project-details {
  overflow: hidden
}
<body onscroll="myFunction()">


  <div class="project-details">
    <div id="project-image">
      <img src="http://placehold.it/350X225" class="img-responsive">
    </div>
    <h1>
      Project Title
    </h1>
    <p class="project-description">
      Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
      survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
      publishing software like Aldus PageMaker including versions of Lorem Ipsum.
      <br/>
      <br/> Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen
      book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently
      with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
      <br/>
      <br/> Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen
      book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently
      with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
    </p>
  </div>
</body>

This modern plugin holds a special place in my heart. Check it out here

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