Check all read-only checkboxes that have their visible checkbox checked

checkSfdcReadOnly.js

var inputs = document.getElementsByTagName("input");
for (let i = 0; i < inputs.length; i++) {
  let e = inputs[i];
  if (e.type == "checkbox" && e.checked && e.id.charAt(0) == "d") {
    document.getElementById("r" + e.id.substr(1)).checked = true;
  }
}