JSFiddle - React, Tailwind, and code Playground

JavaScript

function largestRectangleInGrid(matrix) {
  const m = matrix.length, n = matrix[0].length;
  let r = 0;
  for (let i = 0; i < m; i++) {
    for (let j = 0; j < n; j++) {
      let hMax = m - i;
      for (let w = 0; matrix[i][j + w]; w++) {
        for (let h = 0; h <= hMax; h++) {
          if (h === hMax || !matrix[i + h][j + w]) {
            hMax = h;
            r = Math.max((w + 1) * h, r);
            break;
          }
        }
      }
    }
  }
  return r;
}