script.js

function generateSVG(N, M, S) {
  const rects = [];
  for (let y = 0; y < M; y++) {
    for (let x = 0; x < N; x++) {
      rects.push(`<rect x="${x * S}" y="${y * S}" width="${S}" height="${S}" fill="none" stroke="black" stroke-width="2"/>`);
    }
  }
  const width = N * S;
  const height = M * S;
  return `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}">${rects.join('')}</svg>`;
}