Extract a column from an array of JavaScript objects.

extractColumn.js

function extractColumn(arr, column) {
	function reduction(previousValue, currentValue) {
		previousValue.push(currentValue[column]);
		return previousValue;
	}

	return arr.reduce(reduction, []);
}

9ice one

function extractColumn(arr, column) {
  return arr.map(x => x[column])
}

@Enelar thanks

function extractColumn(arr, column) {
  return arr.map(x => x[column])
}

ES6 way :)
let extractColumn = (arr, column) => arr.map(x=>x[column]);

@pauloffborba const :P

Awesome function Eddie, thanks a lot!