Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
brandonlind2
7,823 PointsDoes anyone know why this keeps returning an empty array?
This getIndexNames function keeps returning an empty array, I cant figure out why?
function Animal(age, name){
this.age=age;
this.name=name;
}
var animals=[
dog= new Animal(4, 'spike'),
rat= new Animal(2, 'jack'),
cat= new Animal(8, 'Penelope'),
turtle= new Animal(10, 'Stoner'),
];
function getIndexNames(arrayName){
var names=[];
for(var i=0; i >= arrayName.length; i++){
names.push(arrayName[i].name);
}
return names
}
2 Answers
Arjuna Huffman
2,400 PointsHi again,
I typed it out and tested it in the console and got it to work.. If you try
function Animal(age, name){
this.age=age;
this.name=name;
}
var animals=[
new Animal(4, 'spike'),
new Animal(2, 'jack'),
new Animal(8, 'Penelope'),
new Animal(10, 'Stoner')
];
function getIndexNames(arrayName){
var names=[];
for(var i=0; i < arrayName.length; i++){
names.push(arrayName[i].name);
}
return names;
}
var returnedArr = getIndexNames(animals);
console.log(returnedArr);
Arjuna Huffman
2,400 Pointsvar animals=[ new Animal(4, 'spike'), new Animal(2, 'jack'), new Animal(8, 'Penelope'), new Animal(10, 'Stoner') ];
You can't assign variables inside of an array, and you don't have to put a comma after the last element of the array. I think it should work if you use the array I typed out above, but I haven't tested it.
Arjuna Huffman
2,400 PointsAlso, when looping over an array the following syntax looks better, I think: i < arrayName.length
brandonlind2
7,823 Pointsthanks, I see thats not needed by arrays now lol still not working though for some reason.
Arjuna Huffman
2,400 PointsArjuna Huffman
2,400 PointsI need to learn how to post code... Sorry for that mess, haha :)
brandonlind2
7,823 Pointsbrandonlind2
7,823 PointsThanks!! yeah that's working :) I seen now I put >= instead of <=. I'm confused though I think <= is a comparison operator that should work if < does.
brandonlind2
7,823 Pointsbrandonlind2
7,823 Pointsdont worry about the ```javascript I have the same problem before just wouldnt work for me lol