Get Random Number From Multidimensional Array

In a javascript function, I have a multidimension array as below. How can i get a random number from myObject[1]? var myObject= [ [ [2,3], [5,9], [4,7] ], [ [1,3], [5,8] ], [ [

Solution 1:

This could work:

var randomNumber = getRandom(myObject[1]);

functiongetRandom(arr) {
   var random1 = Math.floor((Math.random() * (arr.length)));
   return arr[random1][Math.floor((Math.random() * (arr[random1].length)))];
}

Solution 2:

Here is a recursive function that should do the trick

var multiDimNumberPicker = function(inputArray){

    var randomItem;

    //if item is an arrayif( Object.prototype.toString.call( inputArray ) === '[object Array]' ) {

        //pick a random item to return
        randomItem = inputArray[Math.floor(Math.random()*inputArray.length)];

        console.log("is still array " + randomItem);

        //process selected itemreturnmultiDimNumberPicker(randomItem);

    }else{

        console.log("not an array " + inputArray);
        return inputArray;

    }

};

//Generate a random number from myObject[1];var x = multiDimNumberPicker(myObject[1]);
console.log(x);

//Generate a random number from myObject;var y = multiDimNumberPicker(myObject);
console.log(y);

Example jsFiddle http://jsfiddle.net/rqk5m/1/