add all 94-callback-function till line no 56

coder-harsh · coder-harsh · commit 78bc322edd40 · 2023-04-06T12:34:14.000+05:30
diff --git a/94-callback-function.html b/94-callback-function.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Callback function</title>
+    <link rel="stylesheet" type="text/css" href="">
+</head>
+
+<body>
+
+    <script src="js/94-callback-function.js"></script>
+</body>
+
+</html>
diff --git a/js/94-callback-function.js b/js/94-callback-function.js
@@ -0,0 +1,56 @@
+//abhi tak humne variable ko as a argument pass kiya hain
+/*
+function add(num1, num2) {
+    console.group(num1 + num2);
+}
+
+
+add(10, 20);  //30
+
+
+//callback function se ek function k andr dusra function kaise pass karte hain as a parameter
+
+
+function sayhello() {
+    console.log("Hello");
+}
+function add(num1, num2, callback) {  //callback name se sayhello function receive hoga
+    // sayhello();  //hum direct kyon nhi call kar liye sayhello function ko
+    console.group(num1 + num2);
+    callback();
+}
+
+
+let a = 10;
+let b = 20;
+
+add(a, b, sayhello); //30  //Hello
+
+//callback function benefit is we can pass 2 functiondirectly even with diffrent parameter. but diirect function call karne se ek hi function calll hoga. parameter v nhi change kar sakte hain.
+
+
+//ye ajax,asynchronus m kam aata hain, mostly
+
+
+//hum callback function as a ananymous function v pass akr sakte hain.
+
+//ananomus function normal and arrow function se bana sakte hain.
+*/
+//ananomus function v pass kr sakte hain as a parameter. sbse jyda anonumus function use karte hain call back function m
+function sayhello() {
+    console.log("Hello");
+}
+function add(num1, num2, callback) {
+    console.group(num1 + num2);
+    callback();
+}
+
+
+let a = 10;
+let b = 20;
+
+add(a, b, sayhello); //30  //Hello
+
+add(30, 5, function () {
+    console.log("Bye..........."); //Bye...........
+});
