IHadEnaugh

FunctionalFun/script.js

@@ -46,4 +46,55 @@ document.addEventListener("DOMContentLoaded", function(){
     }
 });
 
-//https://youtu.be/lfmg-EJ8gm4?si=78bU7V4mL7MVoYw_&t=14391
+//https://youtu.be/lfmg-EJ8gm4?si=78bU7V4mL7MVoYw_&t=14391
+
+
+//Callback functions!!!
+
+function sum(callback, a, b) {
+    let suma = a + b;
+    callback(suma);
+}
+
+function summa(b, a) {
+    return b + a
+}
+
+function displaynum(num) {
+    console.log("The number: ", num);
+}
+
+function displaytxt(num) {
+    console.log("The Text: ", num);
+}
+
+sum(displaynum, 5, 8);
+sum(displaytxt, "alma", "fa");
+sum(console.log, 5, 7 )
+
+
+let numberok = [1, 2, 3, 4, 5]
+
+numberok.forEach(displaynum)                    //!!! <array>.forEach() METHOD!!!!!!
+
+
+let numbbb = numberok.map(doubler);         //map()
+console.log(numbbb);
+function doubler(params) {
+    return params**2;
+}
+
+
+
+
+let nummb = numberok.filter(ifeven)             //filterer()
+console.log(nummb);
+function ifeven(n){
+    return n % 2 === 0;
+}
+
+let total = numberok.reduce(summa)          //reduce()
+console.log(total)
+
+
+//https://youtu.be/lfmg-EJ8gm4?feature=shared&t=17107