return the last character/letter of that string javascirpt code example

Example 1: javascript get last character in string

var hello = "Hello World";
var lastCharOfHello=hello.slice(-1);//d

Example 2: javascript get last word in string

// strips all punctuation and returns the last word of a string
// hyphens (-) aren't stripped, add the hyphen to the regex to strip it as well
function lastWord(words) {
    let n = words.replace(/[\[\]?.,\/#!$%\^&\*;:{}=\\|_~()]/g, "").split(" ");
    return n[n.length - 1];
}