Select a radio / checkbox in JS

// get the div that contains the checkboxes

// this div is the element which uses the elemnent's full name as its id.

var div = $('tablename___elementname');

 

//get its checkboxes

var inputs = div.getElements('input[type=checkbox]');

 

//or to get radiobuttons

var inputs = div.getElements('input[type=radio]');

 

//access a specific input and see if its checked or not

 

if(inputs[0].checked){

    alert('the first input is checked')

} else {

    alert('the first input in not checked');

}