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shrink logo img on scroll in nav bar


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On the W3Schools website page 'How TO - Shrink Navigation Menu on Scroll' tutorial it shows how to use Javascript to shrink the nav-bar. The 'CompanyLogo' also shrinks but this is text not an actual logo.

What kind of Javascript would I need for a shrinking logo that was for example a jpg image?

Is this a difficult thing to do?

Any help on this would be great as I want to do this for my own website design and I'm new to Javascript.

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Take a look at the Try-It. Can you see how its changing the 'logo'?


I noticed that it uses JavaScript to directly change the font-size of the 'logo'.

If you used an image you could change the width of the image to resize it.

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