Auto-check ALL list lookup options

This ALMOST works. It does check the boxes, but the form doesn't save the results or values of the checked boxes.

NWF.FormFiller.Events.RegisterAfterReady(function(){ 

var myElement = document.querySelectorAll('input[type=checkbox]')[0];

var observer = new MutationObserver(function(mutations) {
   if (document.contains(myElement)) {
        console.log("Checkbox Added");         

        NWF$('input:checkbox').prop('checked', true);
    }
});

observer.observe(document, {attributes: false, childList: true, characterData: false, subtree:true});
});

Should also note that this only works in Microsoft Edge and Chrome.

This script works. The key is to trigger('click') on the selected option.

NWF.FormFiller.Events.RegisterAfterReady(function(){
var myElement = document.querySelectorAll('input[type=checkbox]')[0];
var count = 0
var observer = new MutationObserver(function(mutations) {
if (document.contains(myElement) && NWF$('input:checkbox').prop('checked', false)) {
// console.log("Checkbox Added");
NWF$('input[type=checkbox]').trigger('click');
//count++
//console.log(count);
}
});
observer.observe(document, {attributes: false, childList: true, characterData: true, subtree:true});
});