callback function and higher older function

last-endcode · last-endcode · commit b107a4dbc999 · 2020-10-14T14:55:15.000+07:00
diff --git a/33_callback_functions_higher_order.js b/33_callback_functions_higher_order.js
@@ -0,0 +1,44 @@
+/*
+Callback function 
+passed to another function as an argument &
+executed inside that function
+
+Higher order function 
+Accepts another function as an argument 
+or return another function as a result
+
+*/
+
+
+// this is a callbackfunction
+function morning(name){
+    return `Good morning ${name}`;
+}
+
+// higherorder function
+function greet(name, cb){
+    const myName='Nakamura Ekuichi';
+    // cb is argument and executed here 
+    //and then will resulted by this function as higher older function
+    console.log(`${cb(name)} my name is ${myName}`);
+}
+
+// remember callback function not invoke morning()
+//cz already exist in higher older function
+greet('Daisuke', morning);
+
+// function greetMorning(name){
+//     const myName = 'john';
+//     console.log(`Good morning ${name}, my name is ${myName}`);
+// }
+
+
+// function greetAfternoon(name){
+//     const myName = 'susan';
+//     console.log(`Good afternoon ${name}, my name is ${myName}`);
+// }
+
+// // run function
+// greetMorning('bobo');
+// greetAfternoon('peter');
+
