How can I be sure memory is being overwritten - Javascript

Question

When loading sensitive information into memory I want to make sure it is securely erased afterwards. I am working on a Javascript web app, and I want to make sure that my variab

Answer 1

It depends on the level of security you need. If you mean it is inaccessible to future Javascript programs running on the same page, yes, all you have to do is reassign the variables pointing to it. If you mean, so secure that a hardware-level analysis of the computer won't find the info, Javascript isn't the language you want.