Transform the size and convert an object from a picture into text based on the user's scrolling

I've been intrigued by the scrolling effects used on websites like Google SketchUp and Google Plus. It's fascinating how elements can transform as you scroll down the page. For example, on Google SketchUp's site, the banner starts off integrated into the page but then pops out and sticks to the top after a certain point. Meanwhile, on Google Plus, the banner completely changes once you hit a specific scroll position.

My goal is to achieve a similar effect on my website. I want a square logo on the right that scales to match the height of the header as you scroll down. Eventually, I'd like the logo to fade away and be replaced with text instead of an image.

So, what do I need to make this happen? Should I use jQuery or JavaScript? And how can I track the scrolling and seamlessly connect these two transformations?

javascriptjqueryhtmlcssscroll

Answer №1

Do you aim to achieve this specific outcome?

http://jsfiddle.net/agdbd8x6/15/

If yes, the process is quite straightforward. By using jQuery, you can attach a 'scroll' event handler and monitor the current scroll position. Display the image only when the scroll position is at zero:

var img = $('#image');
var txt = $('#text');

$(".container").scroll(function(){                                
    txt.text('Scroll position = ' + $(this).scrollTop());
    var showImage = $(this).scrollTop() == 0;
    if (showImage){
        img.css('display', 'inline');
        txt.hide();
    }
    else{
        img.hide();
        txt.css('display', 'inline-block');
    }
});

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