JSFiddle - React, Tailwind, and code Playground

JavaScript

function hello() {
    console.log("hello");
}

var f = hello.toString();//get string of whole function
f = f.substring(f.indexOf('{') + 1);//remove declaration and opending bracket
f = f.substring(0, f.length - 1);//remove closing bracket
f = f.trim();//remove extra starting/eding whitespace

console.log(f);