- Calculate: from your browser, instead of sending data to the server, then calculating [server side] and resending back new data to your browser, it is much more efficient to calculate & display using your browser/computer!
- Display: a web page can be better laid out to suit your browser’s window size (to avoid unnecessary sideways scrolling for example).
- Validate: before sending data from a form, it can be checked to see that necessary bit are filled in or valid information is entered (for an valid email address for example).
- Etc.: if you are so minded, you can avoid serving content to spiders that they don’t need to see, like form validation code (after all, a spider is not going to be filling in forms on you website!) this also speeds up delivery of your page to the spider - this is a good thing :¬].
OK – so where does the SEO come in?
What can you do about this?
There are a few simple things you can do: