42 lines
970 B
JavaScript

const add = (a, b) => a + b;
const counter = {
value: 23,
inc: function () {
this.value + 1;
},
};
const greet = () => {
console.log("Hey David");
};
// const btnGreet = document.getElementById("greet");
// btnGreet.addEventListener("click", greet);
// eine Funktion, die eine Funktion zurück gibt
const count = function () {
let counter = 0;
return function () {
console.log("TEST");
};
};
count()();
const oneWord = function (str) {
return str.replace(/ /g, "").toLowerCase();
};
const upperFirstWord = function (str) {
const [firstWord, ...others] = str.split(" ");
return [firstWord.toUpperCase(), ...others].join(" ");
};
// Higher-order function
const transformer = function (str, fn) {
console.log(`Original string: ${str}`);
console.log(`Transformed string: ${fn(str)}`);
console.log(`Transformed by: ${fn.name}`);
};
transformer("JavaScript is the best", upperFirstWord);
transformer("JavaScript is the best", oneWord);