Creating blur effect with css and jQuery on scroll

Question

I am trying to create blur effect when the user scrolls up and down the browser window using css and jquery. Here is my code.

HTML

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Answer 1

For "blur" effect , try utilizing css filter blur(Npx) , where N is a number; px css pixel units e.g.; 4px

var hideThatKitty = $('.out').innerHeight();

$(window).on('scroll', function () {
    hideThatKitty = hideThatKitty / $('.this-div-kills-browsers').offset().top
    $('.out')
    .css({"webkit-filter": "blur(4px)",
          "moz-filter":"blur(4px)",
         "ms-filter":"blur(4px)",
         "o-filter":"blur(4px)",
         "filter":"blur(4px)"});
});

.out {
    width: 100%;
    height: 800px;
    background: url(https://placekitten.com/1200/800) no-repeat;
}
.this-div-kills-browsers {
    height: 1000px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">
</script>
<div class="out">
    <div class="inner"></div>
</div>
<div class="this-div-kills-browsers"></div>

jsfiddle https://jsfiddle.net/2dmxLnuy/5/

Answer 2

Scrolling while bluring an image

Demo

https://jsfiddle.net/vduucu87/

Code

$(window).on('scroll', function () {
    var pixs = $(document).scrollTop()
    pixs = pixs / 100;
    $(".out").css({"-webkit-filter": "blur("+pixs+"px)","filter": "blur("+pixs+"px)" })     
});