Image Scrolling Not Smooth

[indianglasses]

I am trying to create a very simple parallax scrolling effect just jQuery, CSS and an image but the problem is that it is not very smooth and very jerky.

My object is to have a image move from the top right of the page to the bottom left as the user scrolls down the page.

I need some help in achieving and more polished page, but either fixing my existing js or if you know how to implement a parallax plugin thats even better.

I am able to send over all the required files if nessessary.

Here is my current code:

Javascript:

$(document).scroll(function () {
var ratio = window.pageYOffset / ( $(document).height() – $(window).height()) ;
console.log( “scroll: ” + window.pageYOffset + “, ratio: ” + ratio );

$( ‘#slash-1’ ).css( ‘top’, -160 + ( 4500 * ratio ) + ‘px’ );
$( ‘#slash-1’ ).css( ‘left’, 960 – ( 960 * ( ratio ) ) + ‘px’ );

$( ‘#slash-2’ ).css( ‘top’, -300 + ( 4500 * ratio ) + ‘px’ );
$( ‘#slash-2’ ).css( ‘left’, 960 – ( 960 * ( ratio ) ) + ‘px’ );
});

HTML
`

`

CSS
`#slash-1 {
position: absolute;
top: 300px;
left: 960px;
}`

[Taufik Nurrohman]

You should use `$(window)`. To get the scroll distance, just use `$(window).scrollTop()`:

$(window).scroll(function() {

var distance = $(this).scrollTop();

$('#slash-1').css({

'top': (distance*2) + 'px',

'left': '-' + distance + 'px'

});

});

See the demo here ⇒ http://jsfiddle.net/tovic/43eG7/58/

I think you can develop the rest themselves :)

[Author]

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