As with everything else in the web industry progress is rapid. One of the main things to think about when you write scripts is to make sure that they are compatible with the browsers you are targeting.
Here are a few examples of what you can do with JS:
- Change the look of the page, colors, fonts, switch images, etc.
- Validate and calculate forms.
- Animate things.
- Adjust the page to fit the users browser, resolution, platform, etc.
My personal view is that everything is possible until proven impossible! :-)
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