Maintain Browser History with AJAX

Most of you out there would have noticed that browser history button doesn’t work if you are using AJAX. Instead of rolling forward or backward the AJAX step they actually move the complete page. This can be a nightmare for users that always tend to use them.

AJAX has a very nice feature known as History Points that allow the browser to keep track of AJAX steps and therefore move through them using forward and backward buttons.

Let’s understand how History Points work through a simple example. We have a page that show company’s departments in a drop down list. On selecting one, the page shows the employees working in that department in a list; on selecting the employee it shows employee details like name, email, salary etc.  Employee information is stored in Employee class.

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