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

Jackie Martin
PLUS
Jackie Martin
Courses Plus Student 6,740 Points
Posted by Jackie Martin
Jackie Martin
Courses Plus Student 6,740 Points

I'm only getting the first song and artist... What am I doing wrong?

I can only get the first song to display. This is the code on my workspace:

var playList = [
  ['I Did It My Way', 'Frank Sinatra',
  'Respect', 'Aretha Franklin',
  'Imagine', 'John Lennon',
  'Born to Run', 'Bruce Springsteen',
  'Louie Louie', 'The Kingsmen',
  'Maybellene', 'Chuck Berry']
];

function print(message) {
  document.write(message);
}

function printSongs( songs ) {
  var listHTML = '<ol>';
  for ( var i = 0; i < songs.length; i += 1) {
    listHTML += '<li>' + songs[i][0] + ' by ' + songs[i][1] + '</li>';
  }
  listHTML += '</ol>';
  print(listHTML);
}

printSongs(playList);

3 Answers

markmneimneh
markmneimneh
14,132 Points
markmneimneh
markmneimneh
14,132 Points

Hello

I could not figure out the link to the challenge, but I am pretty sure the playList should look like this:

var playList = [['I Did It My Way', 'Frank Sinatra'],['Respect', 'Aretha Franklin'], ['Imagine', 'John Lennon'], ['Born to Run', 'Bruce Springsteen'], ['Louie Louie', 'The Kingsmen'], ['Maybellene', 'Chuck Berry']];

for the logic to work.

Thanks

Dave McFarland
STAFF
Dave McFarland
Treehouse Teacher
Dave McFarland
Dave McFarland
Treehouse Teacher

Hi Jackie,

markmneimneh is correct. You did create a two-dimensional array; however, instead of adding one array per song/singer pair, you add one array to store all of the songs and singers. You need to put each pair in its own array like this ['I Did It My Way', 'Frank Sinatra'] so your playlist should look like this:

var playList = [
  ['I Did It My Way', 'Frank Sinatra'],
  ['Respect', 'Aretha Franklin'],
  ['Imagine', 'John Lennon'],
  ['Born to Run', 'Bruce Springsteen'],
  ['Louie Louie', 'The Kingsmen'],
  ['Maybellene', 'Chuck Berry']
];
Jackie Martin
PLUS
Jackie Martin
Courses Plus Student 6,740 Points
Jackie Martin
Jackie Martin
Courses Plus Student 6,740 Points

Oh cool. Thanks for the quick response. Works great!