Working with localstorage

I am building an online os and have an issue. Is it possible to add data to the current values ​​of the loc开发者_Python百科al storage object without removing the current values​​?

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Kind of. All local storage variables (as far as I know. correct me if I'm wrong) are stored as strings. So "adding" a bit of data to a local storage variable could be done by appending it to the existing value. e.g.

localStorage["myHandle"] += "blah";