Hi!
   I have a question. I hope someone can give me some suggestion.

I want to implement a CRM System using PHP and MySQL. I want to add AJAX technology to the CRM System. I don't know it is a good choice or bad choice. I have some AJAX experience but those are simple cases. This time is a big project to implement CRM System.

   I most concern part is the operators refresh the page.
   For example, if the operator tries to search a client's information, and when the result comes out and the operator refresh the page by accident.
   I think the result will disappear. If I use traditional way, submit the page to server and refresh the page, then the result is still there. That is because the search keywords are append to the URL query string.
   How can I prevent the result disappear if they refresh the page by accident?

   Is it a good choice to use AJAX technology to implement CRM?

  Thanks.

用不用AJAX和CRM没有什么必然的关系吧！

你想用也行，不用也行！