It just comes down to preference, and usage. Whether you want to iterate over the array or just want an array with all the results is entirely up to you. If, for instance you have an array of numbers, and you want to add them all, then use it for your app. You can use the map method there to get a new array. If, however you no longer need the old numbers, you can just use the forEach method to iterate over the array. But, if you want to iterate or not, when it does not make any difference, it all comes down to preference.
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It just comes down to preference, and usage. Whether you want to iterate over the array or just want an array with all the results is entirely up to you. If, for instance you have an array of numbers, and you want to add them all, then use it for your app. You can use the map method there to get a new array. If, however you no longer need the old numbers, you can just use the forEach method to iterate over the array. But, if you want to iterate or not, when it does not make any difference, it all comes down to preference.
Indeed.
You can also use
for...of, which doesn't take a function like map or forEach