JSFiddle - React, Tailwind, and code Playground
by dshilkret
JavaScript
var str = "filename.j"
var arr = str.split("."); // Split the string using dot as separator
var lastVal = arr.pop(); // Get last element
var firstVal = arr.join("."); // Re-join the remaining substrings, using dot as separator
console.log(firstVal + " and " + lastVal + typeof(lastVal)); //Printing result