javascript return value is always undefined

Question

I\'m trying to retrieve the 2 attributes of seprated function and I debug there values before the end of the function and they have a value but the return value is alwas und

Answer 1

because function STAAPlanlat doesn't return any value. your anonymous function returns lan but it is asynchronous callback. add this before return lan;:

document.getElementById("STAAPlanlat").value = "lan is" + lan;