Range

readme.md

Range Function

This funtion could be used in cicles and make it more clear:

for (const i of range(1, 10)) {
  console.log(i)
}

Outputs numbers from 1 to 9.

for (const i of range(10, 1)) {
  console.log(i)
}

Outputs numbers from 9 to 1.

Using arrays

The logic of the range is based on array behavior and created to create indexes.

const arr = ['a', 'b', 'c']

for (const i of range(0, arr.length)) {
  console.log(arr[i])
}

for (const i of range(arr.length, i)) {
  console.log(arr[i])
}

Output order: a b c b c a

range.js

function * range(start, end, step = 1) {
  if (start < end) {
    while (start < end) {
      yield start
      start += step
    }
  }
  else if (start > end) {
    while (start > end) {
      start -= step
      yield start
    }
  }
}