Avoid Page REfresh Problem using Extjs 3.2

I am working on extjs based application , i need control the page refresh when user press f5 multiple times, i am getting script error when user done this.

I need to solve this issue by sending 2nd refresh request after 1st refresh one is completed.

Is there any way to achieve the above solution using extjs..

Thanks in advan开发者_StackOverflow社区ce

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Yes it is possible through asynchronous method calls, you will have to know when the users press F5 and then intercept the even then use a custom function to refresh the page. Extjs has this inbuilt http://dev.sencha.com/deploy/dev/docs/output/Function.html.

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I don't believe (to my knowledge) there's any way to prevent a refresh.