JSFiddle - React, Tailwind, and code Playground

by DohanKwon

JavaScript

// function declaration
function sayYeah() {
    console.log('Yeah');
};
sayYeah();

// function expression
var sayHo = function() {
    console.log('Ho');
};
sayHo();

//
function hello1() {
    console.log(sayHello1());
    function sayHello1() {
        return 'What\'s up';
    }
}
hello1();

//
function hello2() {
    console.log(sayHello2());    // TypeError: undefined is not a function
    var sayHello2 = function() {
        return 'What\'s up';
    };
}
hello2();