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JavaScript JavaScript Foundations Arrays Methods: Part 2

Neslee Rodillo
Neslee Rodillo
19,615 Points

really do not understand task 2 of 2

help, I am able to pass task 1 of 2: On about line 18, modify 'saying1' so it's in the opposite order.
Just fine but the task 2 of 2: Sort the 'saying2' array, on about line 19, so that the words are listed in length order. The shortest first. Use the 'length' property on the strings in the sort function.

  • I keep going around in circles.

my solution for task 2 is

saying2.sort(function("length"){});

I know I may be missing something simple but I have watched the video so many times as it only explains the compare function with relation to numbers not strings or text.

2 Answers

If you think about it, you're not really using the compare function with strings. Length of a string is a numerical property — it's a number. You are sorting strings, yes, but you are sorting them based on a numerical property, one that you can access using dot notation (string.length).

So, the compare function works like this:

saying2.sort(function(a,b){
   return a.length - b.length;
});

It's as if you're sorting numbers, but instead of subtracting elements directly from one another, you are subtracting their lengths and returning the result of that operation.

Neslee Rodillo
Neslee Rodillo
19,615 Points

Thank you for your help Dino :)