JSFiddle - React, Tailwind, and code Playground

JavaScript

function Ship(shipType) {

    this.name = shipType;
    this.detailedName1 = function() {
        return this.name.charAt(0).toUpperCase() + this.name.slice(1);
    };
    this.detailedName2 = function() {
        var c=
            this.name.charAt(0).toUpperCase() +
            this.name.slice(1);
        return c;
    };
}

alert((new Ship('TEST').detailedName1())+ '<=>' + (new Ship('TEST').detailedName2()));