JavaScript 47. Iterating


That is funny. But I get the answer I am asked to get. But the site tells me that it is incorrect.

var arr = ['one', 'two', 'three'];

for (var i = 0; i < arr.length; i++) {
  var item = arr[i];

// BAD - this might not work as expected if
// other code has modified the Array prototype.
for (var key in arr) {
  var item = arr[key];

// Now, try using a for loop to create a string
// 'combined' that contains all the elements in
// the array put together.
function join(inputArray) 
  var combined = '';
  // Add for loop here
  for (i = 0; i < arr.length; i++)
      var combined = combined + arr[i];
  return combined;

// In this case, the output would be 'onetwothree'.


I think that because they're asking you to iterate, you need a for each loop that would look like:

for item in inputArray {
    # do something to each item.


@kyleaw, this is js, for in loop is for objects.

@megaslayer81031, you should loop over inputArray instead of arr, this way, your function will work for any array supplied as argument on the function call


Ahh! You're right thanks for stepping in.


@stetim94 Thank you, it worked!