Function onClick

internal/driver/html/stacks.js:467–480

(target, handler)

  // Handle clicks, but only if the mouse did not move during the click.
  function onClick(target, handler) {
    // Disable click if mouse moves more than threshold pixels since mousedown.
    const threshold = 3;
    let [x, y] = [-1, -1];
    target.addEventListener('mousedown', (e) => {
      [x, y] = [e.clientX, e.clientY];
    });
    target.addEventListener('click', (e) => {
      if (Math.abs(e.clientX - x) <= threshold &&
          Math.abs(e.clientY - y) <= threshold) {
        handler();
      }
    });
  }

  function drawSep(y, posTotal, negTotal) {
    const m = document.createElement('div');