I am asking question just to ensure that my understanding is correct.I have read Writing Secure code with Locker Service and LockerService and Lightning Container Component:Securely Using third-party Libraries in Lightning Component.

It mentioned that Locker Service does not effect Salesforce classic which mean I still safe if I using Iframe, Javascript Library or javascript code in Salesforce classic ?Is this understanding correct?

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    While you should be, you are not doing yourself or your client if applicable any favors
    – Eric
    Commented Mar 1, 2017 at 4:41
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    Are you thinking to embed lightning components on VF pages to use on Salesforce classic? What's the use-case? Otherwise I would highly recommend to write lightning components respecting locker service for their reusability in classic and LEX. Commented Mar 1, 2017 at 5:00
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    We do not plan to use lightning component.But we got a lot of javascript in visualforce , javascript chart library in visualforce.We are thinking we are not impact by Locker Service, just asking if we think it correctly before it late.
    – unidha
    Commented Mar 1, 2017 at 6:47


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