gistfile1.js

array = response['equipmentItems'];
parentElement = $('select')[0];

for (var i = 0; i < array.count; i++) {
    currentObj = array[i];

    newElement = document.createElement('option');
    newElement.value = currentObj.someAttribute;
    newElement.innerText = "Some Label";

    for (prop in currentObj) {
        if ( currentObj.hasOwnProperty(obj) ) {
            newElement.setAttribute("data-" + prop, currentObj[prop]);
        }
    }

    parentElement.appendChild(newElement);
}