I have a loop in JS, and once the loop is complete the value is returning as null, if I use lodash for the same purpose, it returns the result.
This is what I tried:
JS:
const jsRows = Object.entries(response).forEach(([key, row]) => {
return row;
});
console.log(jsRows) ==> Output undefined
Lodash:
const loRows = map(response, row => {
return row;
});
console.log(loRows) ==> Output Array
The .forEach()
function always returns undefined
. It is not at all the same thing as a .map()
function. The native JavaScript Array.prototype.map()
also returns a new array.
The .forEach()
function is for "doing something" with each element of an array in a situation where you don't need a new result comprised of a transformation of each array value. The .map()
function, on the other hand, is for transforming an array into a new array based on a transformation of each array element.
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