How to Check and Update a cookie if it does not have the secure flag set?

My issue is we set some cookies, using JS, with a 1 year expiration and that particular cookie didn't have the secure flag set. We now want to update the cookies to have the secure flag set. The code that creates the cookies now has the "secure" attribute and all new cookies have the "secure" flag. The issue is how do I update existing cookies? I'm assuming I have to destroy the cookie and then recreate it with the secure flag set? I don't know if there is any other way to do this? Also is there a way using JavaScript to detect if the cookie does have the flag set before deleting it?

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Julian HansenCommented:
As far as I know you can't reference it - you can only overwrite it.

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is this an internal application or public website ?
894359Author Commented:
A public website.
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Internet Protocol Security

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