How to take the first character from the array of words?

There is an array of data set (size is about 1000-1500, each index - 1 word). As with the minimum load to take from this array the first characters of each word?
June 3rd 19 at 19:23
1 answer
June 3rd 19 at 19:25
const firstChars = => n[0])

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