JSFiddle - React, Tailwind, and code Playground

JavaScript

function printName(email){
    var name = email.split('@')[0];
    // source : http://stackoverflow.com/questions/650022/how-do-i-split-a-string-with-multiple-separators-in-javascript
    var returnVal = name.split(/[._-]/);
    return returnVal;
}

console.log(printName('[email protected] '));
console.log(printName('[email protected] '));
console.log(printName('[email protected] '));