Apply bitwise operator to values of array

Question

What would be the best way to apply the bitwise OR operator (or any operator I suppose) to an array of values in javascript?

var array = [1, 5, 18, 4];
// evaluate 1 | 5 | 18 | 4

Answer 1

Use reduce() and pass 0 as the initial value and logical or each value

var array = [1, 5, 18, 4];

var result = array.reduce(function(a, b) {
  return a | b;
}, 0);

console.log(result);