JavaScript foundations, Array's, stage 4. How do I do the first challenge task? concat + push?

Mark;

Task 1 of this challenge asks:

On line 18, set the variable 'saying' to the concatenation of the 'first' and 'second' arrays with the word "dog".

The code for the script portion of the challenge is:

    <script>
      var first =  ["The", "quick", "brown", "fox", "jumps"]
      var second =  ["over", "the", "lazy"];
      var saying = first; 
      var shortSaying = saying;
      var sayingString = saying;
    </script>

Line 18 is the var saying = first; line.

In order to meet the challenge objectives we would concatenate the first and second arrays. Looking in the JavaScript documentation, there is the concat() method which concatenates arrays. Sounds like what we need.

It allows us to add additional items to the new array as well, such as dog.

So, to combine all of our tools we would use the syntax:

var saying = first.concat(second,"dog"); 

I hope it helps, and happy coding.

Ken

So we use "dog" as a parameter in the method. Thanks Ken :)

Mark,

Yes, that adds the value, in this case the string dog to the new array saying after the concatenation.

You could also do something like:

var saying = first.concat(second);
saying.push("dog");

I have forgotten if the push() method has been covered in the JavaScript Foundations course at this point yet, but it will add an item to the end of an array. That would create the same saying array, but it is obviously quicker to do it using the method in the previous post.

Ken