My code doesn't loop through all my objects. Students.length, comes back undefined

Question

var students = [
   {
   name: "Becky",
   track:"web Design",
   acheivments:33289,
   points:1322134
   },
    {
   name:"Bobby",
   track:"Javascript",
   acheivments:20000,
   points:12345
    },
    {
   name:"Billy",
   track:"Life Sciences",
   acheivments:69,
   points:69
    },  
    {
      name:"Byron",
   track:"Boombastic Beats",
   acheivments:777,
   points:99999
    },
    {
      name:"Frank",
  track:"Boss",
  acheivments:2,
  points:-2
    }
];


var message 

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

for (i = 0; i < students.length; i +=1) {
      students = students[i];
      message += "<h2>Student: " + students.name + '</h2>';
      message += "<p>Track: " + students.track + "</p>";
      message += "<p>Acheivements: " + students.acheivments + "</p>";
      message += "<p>Points: " + students.points + "</p>";
      console.log(message);
};```

Answer 1 · 2015-08-31T16:14:46Z

August 31, 2015 4:14pm

Franklin,

Your very close but its not students.length that is the issue its that you are using an undefined variable named students, and using the array variable name students at the same time. try changing it to this

  var message = ""; // empty string to put the iterating variable in. 
 var student;
function print(message) {
 document.write(message)
};

for (i = 0; i < students.length; i +=1) {
     student = students[i]; //change to a variable and change name
      message += "<h2>Student: " + student.name + '</h2>'; //change students to student
      message += "<p>Track: " + student.track + "</p>"; //change students to student
      message += "<p>Acheivements: " + student.acheivments + "</p>"; //change students to student
      message += "<p>Points: " + student.points + "</p>"; //change students to student
      console.log(message);
};

print(message);

Let me know if this helps. If not please feel free to follow up on your question.

Answer 2 · 2015-08-31T15:55:27Z

August 31, 2015 3:55pm

Hmm it seems that you need to have a new var to hold students[i] data. When you do students = students[i] you overwrite your students variable and that's why nothing comes out. Try using student = students[i] and don't forget to change it in your message as well.

  student = students[i];
      message += "<h2>Student: " + student.name + '</h2>';
      message += "<p>Track: " + student.track + "</p>";
      message += "<p>Acheivements: " + student.acheivments + "</p>";
      message += "<p>Points: " + student.points + "</p>";
      console.log(message);

I didn't check that, but hopefully it'll fix your problem :)

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Franklin Colbert

Franklin Colbert

My code doesn't loop through all my objects. Students.length, comes back undefined

2 Answers

Jacob Mishkin

Jacob Mishkin

akak

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