Underscore js loop through all elements of multidimensional array?

Question

JavaScript

there is an object

how can i loop through all the columns and execute the function? For example

self.options['series'] = _.uniq(data, function(item, key, a) { 
                       return item.series;
                    });

Answer 1

var arr = ;
    var newArr = arr.map(function recur(el) {
      return !el.forEach? el * 3:  el.map(recur);
    })
console.log(newArr);