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WebAbout HTML Preprocessors. HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.
WebWrite HTML, CSS, and JavaScript and get a real-time preview. You can use CodePen to: Show off the amazing things you build. Learn new things by tinkering. Build reduced test cases to report bugs and get help on tricky problems. Try out new technologies for the first time. Build components to later use elsewhere. The possibilities are endless.
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WebAbout HTML Preprocessors. HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.
WebJavaScript/ES Modules and Imports – CodePen. There is nothing that prevents you from using native JavaScript Modules (ESM or ES Modules) on CodePen. But there is stuff to know! Importing Pens. Pens have the ability to add External Resources in the JavaScript area of the Pen’s Settings.
WebUsing JS Libraries. 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.
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10 Cool Things You Can Do with CodePen and JavaScript
WebJun 13, 2016 · 1. Add Any Library You Want, Quickly. 2. Write in ES2015. 3. Use a Real Console for Output and Debugging. 4. Use React and JSX. 5. Include Other Pens as Resources. 6. Ajax Stuff from Other Pens. 7....
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