why use finally in try catch code example

Example 1: finally always after try catch

Finally block is ALWAYS executed AFTER try / catch Javascript blocks.

Example 2: try-catch-finally

localStorage.getItem(key)

    try {
        data = JSON.parse(key)
    }
    catch (e) {
        // if the code errors, this bit of code will run
    }
    finally {
    
        return data
    }