In this lab, we are going to build a traffic light.

After you fork and open this lab in your text editor, you'll also want to open index.html in the browser.

In the browser, play around with the buttons in index.html and see what they do.

You'll be coding your solution in script.js. Open up the file script.js file. Fill in code in each of the following sections:

- code for button 3 -- Turn the light Yellow 
- code for button 4 -- Turn the light Green
- code for button 5 -- Say GO!
- code for button 6 -- Make Green Light Blink -- Extension!!

Save your changes to script.js. Refresh the page in the browser to see your changes!

View Traffic Light on Learn.co and start learning to code for free.