p5.js implementation of https://generativeartistry.com/tutorials/tiled-lines/

tiled-lines.js

function setup() {
  createCanvas(500, 500);
  background('#ffffff');
  noLoop();
}

function randomLine(x, y, w, h) {
  if(Math.random() < 0.5) {
    line(x, y, x+w, y+h);
  } else {
    line(x+w, y, x, y+h);
  }
}

function draw() {  
  strokeWeight(4);
  
  const step = 32;
  for(let i=0; i<step; i++) {
    for(let j=0; j<step; j++) {
      randomLine(i*width/step, j*height/step, width/step, height/step);
    }
  }
}