Generates a random ID for MongoDB mock-primary key.

generateRandomID.js

function generateAssignmentID() {
    var id_elem = [];
    var dateObj = new Date();

    function convertToString(id_elem) {
        return id_elem.toLocaleString('en-US', {
            minimumIntegerDigits: 2,
            useGrouping: false
        });
    }

    id_elem[0] = convertToString(dateObj.getDate());
    id_elem[1] = convertToString(dateObj.getMonth());
    id_elem[2] = convertToString(dateObj.getFullYear()).slice(2, 4);
    id_elem[3] = convertToString(Math.floor(Math.random() * 26));
    id_elem[4] = convertToString(Math.floor(Math.random() * 26));
    id_elem[5] = convertToString(Math.floor(Math.random() * 26));

    return id_elem.join('');
}