javascript - Get the length of an element inside of an array -

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i trying find length of elements inside of array.

var test = ["hi", "bye"];

how can length of test[0] ("hi") or test[1] ("bye")?

in main code, have stored value inside array. value has been stored "svars alternativ_4" in array[0]. tried length doing array[0].length giving me wrong length. giving me 20 , if remove value same.. why?

like this:

test[0].length    //for "hi" test[1].length    //for "bye"

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