Function fetchBoxes

browsertests/testdata/testflame.js:16–23

()

  let boxMap;
  fetchBoxes();
  function fetchBoxes() {
    boxMap = new Map();
    const boxes = document.querySelectorAll(".boxbg");
    for (let box of boxes) {
      const text = box.innerText;
      boxMap.set(text, box);
    }
  }

  // rect gets the bounding box for box with text t.
  function rect(t) {