Arrays- With Let & Const

When we discussed the let and const keywords in our lessons on variable declaration, we told you that variables declared with let can be reassigned. Variables declared with const cannot be reassigned.Elements in an array that is declared with the const keyword remain mutable. This means that we can change the contents of a const array, we just cannot reassign a new array. In the following video, we will demonstrate how the let and const keywords behave when storing arrays in variables.


  1. Click the play button to watch the video lesson.
  2. Watch the lesson as many times as needed.
  3. Code along with the instructor using the integrated code editor in the center of your screen.
  4. You can use the Run button beneath the code editor to test your code.
  5. Output from the code that you have written will appear in the panel on the right side of your screen.

If you get stuck or need assistance, you can click the button below to connect with a tutor. 

For additional questions or technical support, email