To start, pick a problem set from the menu above. You will implement the functions needed in the problem set in script.js and then use the ReplIt Run ▶ button to re-evaluate your code. Once you have picked a problem set, this web page will run the tests for one or more of the functions you have defined in script.js. It will also tell you which functions you still need to define to complete the problem set.

After you pick a problem set a set of buttons will appear that you can use to focus on one problem at a time. Clicking one of those buttons will select that problem. If a problem is selected you can click the button again to go back to seeing the results for all functions or pick another problem by clicking on a different button.

Note also that the ReplIt console tab below will have your code loaded so you can invoke functions there to try things out. Just remember that whenever you make changes to your code, you have to hit the Run ▶ button before the new definitions will be available in the console. In the console the up and down arrow keys will walk through the history of expressions you have typed previously so you don't have to retype them.

Click a button below to focus on just one function: