want to create multidimentional array to read array and its related options in javascript

i want to create a multidimentional array in javascript where i want to fetch question and its related options in a an array

demoArray[i] = new Array();
var id=results.rows.item(i).del_ques_id;
demoArray[i]["question"] = results.rows.item(i).question;
demoArray[i]["id"] = results.rows.item(i).del_ques_id;

tx.executeSql('SELECT option,value,del_opt_id FROM delta_option WHERE del_ques_id='+results.rows.item(i).del_ques_id+' order by value desc', [], getOptionDetails, errorCB);

function getOptionDetails(tx,results){
    console.log("option query");
    var lent = results.rows.length;
    console.log("DEMO table: " + lent + " rows found.");
    for(var j=0;j<lent;j++){
        demoArray[i]=new Array();
        demoArray[i]["option"]=results.rows.item(j).option;
        }
}

my query is how should i create an array for option in this same demoArray

1{
ques:question_string;
id:question_id;
option:{
    option_name:option_string;
    option_id:option_id_string;
   }

 }
2{
 ..
 ..
 } and so on

This should be my array structure how to code it