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Returning with error: Argument of type 'number' is not assignable to parameter of type 'string'

It's giving the same error when i use getItem to read the logged data.

Any solution?

All items in local storage are strings . You're trying to pass a number in as the second argument to setItem when setItem 's second paramter is type string , so naturally TypeScript warns you (because you've asked for type safety) that you can't do that.

If you want to store in local storage, explicitly turn it into a string:

let dt: number = Date.now();
localStorage.setItem('logged', String(dt+864000000));
                Thank you, this is also correct for the first problem but unfortunately I can mark only one answer.
– Fresco
                Dec 21, 2017 at 9:40
                let logged: number = localStorage.getItem('logged'); returns Type 'string' is not assignable to type 'number'.
– Fresco
                Dec 21, 2017 at 9:29
        
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