How do I add a script to CodePen?

You can add JavaScript libraries to your Pen through the JavaScript settings menu . There are two ways to access the JavaScript settings menu. For quickest access, click the gear icon in the upper left of the JS editor panel. That opens the Pen Settings menu with the JavaScript tab automatically selected.

Read more

What is Live View in CodePen?

Live View is a full-page view of your Pen that updates in real time as you update the code in your Pen . Updates happen as you type, just like the preview in the Editor, except that this URL can be open in another window or tab, in a different browser, or even on a completely different computer or device.

Read more