Eloquent JavasScript Rev.3 :: Chapter 2 :: Checkerboard Exercise

checkerboard.js

const size = 8
let output = ""
let currentChar = "#"
for (let _ = 1; _ <= size; _ += 1) {
    let line = ""
    currentChar = currentChar === "#" ? " " : "#"
  	for (let __ = 1; __ <= size; __ += 1) {
        line += currentChar
        currentChar = currentChar === "#" ? " " : "#"
    }
    output += `${line}\n`
}
console.log(output)