Edit fiddle - JSFiddle - React, Tailwind, and code Playground

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JavaScript

var filePath = "/scss/_styles.scss";
var fileName = filePath.split("/"); // given name of file
var fileExt = fileName[fileName.length-1].split("."); // file extension
var underscore = fileName[fileName.length-1].charAt(0) == "_";
console.log({extension: fileExt[fileExt.length-1], hasUnderscore: underscore})

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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Use pre-released features

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