How do you run things in CodePen?

By default, every time you save your project runs and automatically updates the preview. You can save and run your project by clicking the “Save All + Run” button in the header . You can also use the keyboard shortcut to save your current file (Command + S for Mac, CTRL + S for PC).

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How do I run React JS Online?

After writing the code in the Online react editor you can simply click on the Run button to execute the code . The output for React IDE code can be viewed on the right-hand side in the Result section. To add an extra image, javascript or css file simply click the + plus button icon: Paste the code and name the file.

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