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map vs for each

Anxious Alpaca answered on July 5, 2021 Popularity 10/10 Helpfulness 3/10

answer map vs for each

map vs for each

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chars = ['Hello' , 'world!!!'] ;
var retVal = chars.forEach(function(word){
  console.log("Saving to db: " + word) 
})
console.log(retVal) //undefined

chars = ['Hello' , 'world!!!'] ;
var lengths = chars.map(function(word){
  return word.length
}) 
console.log(lengths) //[5,8]

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: stackoverflow.com

Tags: each map typescript

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