Convert array into upper case

Question

I have an array that I want to change to upper case but I can´t make it work. Please help me.

var array2 = ["melon","banana","apple","orange","lemon"];  array2.toUpperCase() 

I have also tried the below but it doesn´t work neither.

array2.map(toUpperCase); 

Thanks in advance!

Answer 1

you should use handler function in map:

var array2 = ["melon","banana","apple","orange","lemon"]; array2 = array2.map(function(x){ return x.toUpperCase(); }) 

for more information about map

edit: yes you can do

toUpper = function(x){    return x.toUpperCase(); }; array2 = array2.map(toUpper);