Javascript Data Type How to - Iterate through multidimensional array using key values

Question

We would like to know how to iterate through multidimensional array using key values.

Answer


<!DOCTYPE html>
<html>
<body>
  <script>
var array = [
  [1,2,3],<!--from w  w w.j  a  v  a 2 s  .  c  om-->
  [101,102,103]
];
for (var i=0; i<array.length; ++i) {
  var subArray = array[i];
  for (var j=0; j<subArray.length; ++j) {
    document.writeln(subArray[j]);
    document.writeln('<br/>');
  }
}
array.forEach(function(item, i) {
  item.forEach(function(subItem, i) {
    document.writeln(subItem);
    document.writeln('<br/>');
  });
});
</script>
</body>
</html>

The code above is rendered as follows: