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drewbrokke/gist:516fdf70d7ec41177b3f210fec349ff0

Created July 28, 2022 18:02
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gistfile1.txt
document.querySelectorAll('input[type="checkbox"][value="indeterminate"]') .forEach(function(checkbox) {
checkbox.indeterminate = true;
let onchangeHandler = function() {
checkbox.value = '';
checkbox.removeEventListener('change', onchangeHandler);
}
checkbox.addEventListener('change', onchangeHandler);
});
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