Javascript甚至比较多维数组中的奇数值

Given the following sample:

鉴于以下示例:

var arr = [
  [1,2,3,4,56],
  [45,5,56,67,4],
  [5,4,5,88,75],
  [2,4,5,66,7]
];

var len = arr.length; 
for(var i = 0; i < len; i++) {
  var parent = arr[i];
  for(var j = 0; j < parent.length; j++) {
    console.log(parent[j]);
  }
}
var ar