SimpleDatatableController.js

({
	doInit : function(component, event, helper) {
        //user information
        var userData = [{"id":1, "name":"Anil", "city":"Ernakulam", "country":"India"},
                       	{"id":2, "name":"Akhil", "city":"Palakkad", "country":"India"},
                        {"id":3, "name":"Raju", "city":"Wayanad", "country":"India"},
                        {"id":4, "name":"Mahesh", "city":"Kannur", "country":"India"}
                       ];
        component.set("v.data",userData);
		
    },
    onCheckboxChange : function(component, event, helper) {
        //Gets the checkbox group based on the checkbox id
		var availableCheckboxes = component.find('rowSelectionCheckboxId');
        var resetCheckboxValue  = false;
        if (Array.isArray(availableCheckboxes)) {
            //If more than one checkbox available then individually resets each checkbox
            availableCheckboxes.forEach(function(checkbox) {
                checkbox.set('v.value', resetCheckboxValue);
            }); 
        } else {
            //if only one checkbox available then it will be unchecked
            availableCheckboxes.set('v.value', resetCheckboxValue);
        }
        //mark the current checkbox selection as checked
        event.getSource().set("v.value",true);
	}
})