A question regarding the Dynamic Host Page's tutorial

Hello group,

I have a question regarding this tutorial.

At the end it is illustrated how the servlet/jsp can create a java script variable that contains the email address of the user. This is done in order to save a GWT RPC call that would ask for this value from the browser side to the server when the page loads. I understand the rationale behind this but I wonder if passing the data by a cookie won't be as efficient as the javascript variable but additionally more secured.

Thank you for your time,
Assaf

 

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