How can I add a "Loading...Please wait..." feature?

Posted by Rob on Stack Overflow See other posts from Stack Overflow or by Rob
Published on 2010-04-29T01:40:22Z Indexed on 2010/04/29 1:47 UTC
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Filed under:

php

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md5

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JavaScript

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AJAX

I have a very simple table on my website, that displays different URL's. I have an input field where I can type in a URL and click 'Submit' to add additional URL's.

However, I want to add an MD5 grabbing feature to this, using @md5_file(); to grab the MD5 of the URL and check to make sure it's the MD5 it should be, before adding it to the database. However it may take a few seconds for it to grab the MD5 and compare it, so I would like to add a little bit of text, like "Processing...Please wait..." while it does the comparing, and then once it's compared I want that text to go away.

I've never done this before, or even though about doing it so I have no idea where to start. I'll go ahead and put javascript as a tag for this, since I'm guessing it would be done with javascript, but I really have no idea. I don't think it's possible with PHP, but again, I have no idea.

Any suggestions?

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