Now in a senario where I change the value of the textbox to 20 and clicks on submit I will get page2. Here if I click on back button without touching the popup window button I am able to retain the changed value 20 in previous page i.e, page1. But if I open the popup window by clicking on popup button and after closing it if I click on back button I am going to page1 button the textbox value is getting reset to default value 5.
If I use showModalDialog() instead of window.open() to open the popup I am able to retain the values but I need to copy values from the popup window which is not possible through showModalDialog().
Can anyone suggest a way to retain the values in previous page on click of back button after window.open() call.
The browser is remembering the value and there is no way to tell it to remember it or not. If you want the browser to always remember it, you would have to basically remember the value in a check for it when the page loads.