Chrome DevTools Snippet to click on an element and uncheck all contained checkboxes.

uncheck-checkboxes.js

// uncheck-checkboxes.js
// https://gist.github.com/rubensa/5128d5c8b85eb82ca970d89222693128
// Chrome DevTools Snippet to click on an element and uncheck all contained checkboxes.
// Starting Firefox 72, you can import a Javascript file content in the console input with Ctrl + O (Cmd + O on macOS), as well as saving the console input content to a file using Ctrl + S (Cmd + S on macOS).
(function() {

  function uncheckCheckboxes(e) {
    e.preventDefault();
    e.stopPropagation();
    window.removeEventListener('mousedown', uncheckCheckboxes, true);
    var node = e.target;
    console.group("uncheck-checkboxes");
    console.log("Clicked on ", e.target);
    var checkboxes = node.querySelectorAll("input[type=checkbox]");
    console.groupCollapsed("checkboxes");
    for (var i = 0; i < checkboxes.length; i++) {
      var checkbox = checkboxes[i];
      if (true == checkbox.checked) {
        // some times the event click needs to be fired to execute the asociated functionallity
        checkbox.click();
        // anyway make sure the attribute is removed
        checkbox.removeAttribute('checked');
        // and the value is changed
        checkbox.checked = false;
        console.log(checkbox);
      }
    }
    console.groupEnd("checkboxes");
    console.groupEnd("uncheck-checkboxes");
  }

  window.addEventListener('mousedown', uncheckCheckboxes, true);

  return "uncheck-checkboxes.js: Click on an element to uncheck all checkboxes contained in it";
})();