A CodePen by Alex C.

script.js

function splitFLI(name) {
    var names = name.split(" ");
    var fullNameLength = names.join("").length;
    var initials = "";
    var i;
    for (i = 0; i <= names.length - 1; i++) {
        initials += names[i][0].toUpperCase();
    }
    console.log("Your first name is " + names[0] + " and your surname is " + names[names.length - 1] + ". Your initials are " + initials + ".");
    return fullNameLength;
}

splitFLI(prompt("What is your full name?"));