named functions vs anonymous functions vs vs arrow functions

01 Examples

named function，aka a function declaration

function brag(count) {
     return("I can do " + count + " pushups");
}

brag(3) // I can do 3 pushups

anonymous function, aka a function expression

const brag = function(count) {
     return("I can do " + count + " pushups");
}
brag(3) // I can do 3 pushups

arrow function, aka a lambda function

const brag = (count) =>  {
     return("I can do " + count + " pushups");
}
brag(3) // I can do 3 pushups

Different？