Are there any implementation ideas or libraries for developing projects like JSFiddle or codePen?

RT
now I hope to do a project similar to these two websites, which can edit the front-end code now and show the final effect. Are there any good implementation ideas or libraries that can be used

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Dec.21,2021

CodeMirror is used to edit the code, and the submitted code is executed in iframe .
codepen and jsfiddle are in the user list


Hello, have you implemented it? we also want to do a similar one. Can you ask how you achieve it?

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