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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Two-Dimensional Arrays

Robert Longo
Robert Longo
3,962 Points
Posted by Robert Longo
Robert Longo
3,962 Points

Benefit of accusing each item in the array separately.

In this video each item in the two dimensional array was accessed using brackets. Is there a benefit of using this method, as i would most likely think to write the function like this instead. 

function printSongs( songs ) {
  var listHTML = '<ol>';
  for ( var i = 0; i < songs.length; i += 1) {
    listHTML += '<li>' + songs[i].join(' by ') + '</li>';
  }
Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

fixed code formatting

nico dev
nico dev
20,364 Points
nico dev
nico dev
20,364 Points

Thank you!

That was a bonus lesson for me! :)

1 Answer

Iain Simmons
MOD
Iain Simmons
Treehouse Moderator 32,305 Points
Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

I think it was more to show how you can access arrays of arrays in general. Your code looks like it would work, so good going thinking outside the box (or square brackets)!

Might get a bit trickier with more dimensions/nested arrays though. Also, I'm not sure if he had covered the join method at that stage yet.