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highOrderArray done
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‎03_basics/controFlow.js

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//If condition
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if (true) {
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//console.log("this is true statement");
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}
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if (false) {
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console.log("this will not run");
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}
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if (2 == "2") {
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//console.log("is it true");
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}
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const userLoggedIn = true;
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const userLoggedInGmail = true;
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if (userLoggedIn && userLoggedInGmail) {
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//console.log("Congratulations for successfully login");
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}
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//<,>,<= ,>= ,!= , ==,=== && || ? ??
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// const marks = 81;
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// if (marks >= 80 && marks <= 100) {
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// console.log("congratulations on gettng A+ grade");
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// } else if (marks >= 50 && marks < 80) {
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// console.log("You've passed");
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// } else {
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// console.log("you're fail because you are in university of sargodha");
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// }
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// const month = 3;
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// switch (month) {
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// case 1:
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// console.log("jan");
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// break;
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// case 2:
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// console.log("feb");
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// break;
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// default:
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// console.log("march");
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// break;
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// }
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// const userEmail = "mw5667155@gmail.com";
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// if (userEmail) {
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// console.log("you've loggedIn");
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// } else {
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// console.log("Go first,login");
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// }
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// const userEmail = ""; //false
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// if (userEmail) {
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// console.log("you've loggedIn");
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// } else {
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// console.log("Go first,login");
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// }
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// const userEmail = []; //true
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// if (userEmail) {
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// console.log("you've loggedIn");
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// } else {
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// console.log("Go first,login");
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// }
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// const userEmail = {}; //true
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// if (userEmail) {
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// console.log("you've loggedIn");
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// } else {
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// console.log("Go first,login");
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// }
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// const userEmail = " "; //true
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// if (userEmail) {
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// console.log("you've loggedIn");
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// } else {
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// console.log("Go first,login");
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// }
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//Falsy values
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//false , 0 ,-0, bigInt 0n , "" , null ,undefined , NaN ;
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//Truthy values
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// "0" , "false" , " " , [] , {} ,function(){} ,
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const arr = [];
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// if (arr.length === 0) {
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// console.log("Array is Empty");
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// } else {
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// console.log("Array is not Empty");
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// }
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// const myObj = {};
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// if (Object.keys(myObj) === 0) {
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// console.log("object is empty");
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// } else {
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// console.log("object is not empty");
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// }
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// false == 0 => true
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// false == '' => true
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// 0 == '' => true
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//Nulish coalescing operator (??) : null,undefined
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let val1;
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// val1 = null ?? 5;
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// val1 = undefined ?? 5;
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// val1 = null ?? undefined; //undefined ..
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val1 = null ?? 10 ?? 20;
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//console.log(val1);
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//Terniary Operator..
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// condition?true : false
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let a = 3;
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a > 3 ? console.log("yes it is true ") : console.log("it is false ");

‎04_iterations/for_loop.js

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// console.log("hello world");
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// for (let i = 0; i < 10; i++) {
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// console.log(i);
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// }
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// for (let i = 0; i < 10; i++) {
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// if (i == 5) {
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// console.log("this is on 5");
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// continue;
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// }
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// console.log(i);
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// }
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// for (let i = 0; i < 10; i++) {
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// if (i == 5) {
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// console.log("this is on 5");
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// break;
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// }
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// console.log(i);
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// }
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// const myArray = ["waseem", "hafiz", "talha"];
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// for (let i = 0; i < myArray.length; i++) {
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// console.log(myArray[i]);
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// }
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// for (let i = 1; i <= 10; i++) {
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// console.log(`Outer Loop is ${i}`);
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// for (let j = 1; j <= 10; j++) {
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// console.log(`outerloop ${i} and inner loop ${j}`);
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// }
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// }
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// for (let i = 1; i <= 10; i++) {
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// // console.log(`Outer Loop is ${i}`);
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// for (let j = 1; j <= 10; j++) {
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// console.log(`${i} * ${j} = ${i * j} `);
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// }
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// console.log("\n");
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// } //Table from one to 10 ...;

‎04_iterations/highOrderArray.js

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// console.log("hello world ");
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// ["", "",""]
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// [{},{},{}]
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//===============FOR OF LOOP ========================================
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const myArray = ["hafiz", "talha", "abdulRehman", "shamsAli", "Abdulhadi"];
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// for (const item of myArray) {
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// console.log(item);
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// }
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// const greeting = "Hello World";
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// for (const word of greeting) {
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// console.log(word);
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// }
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//Maps
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//===============================MAPS======================================
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const maps = new Map();
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maps.set("PK", "Pakistan");
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maps.set("UK", "United Kingdom");
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maps.set("USA", "United State Of America");
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// for (const item of maps) {
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// console.log(item);
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// }
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// for (const [key, val] of maps) {
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// console.log(`${key} :- ${val}`);
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// }
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const obj1 = {
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name: "waseem_akram",
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f_name: "M Akram",
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Rollno: "BSIT51F22S021",
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};
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// for (const item of obj1) {
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// console.log(item);
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// } //object is not iteratable...
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// for (const [key, val] of obj1) {
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// // console.log(key, val); //also error here because obj1 is not iteratale..
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// }
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//===============================For IN LOOP ==================================================
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const language = {
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js: "javascript",
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cpp: "C++",
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rb: "Ruby",
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Py: "Python",
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};
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// for (const key in language) {
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// // console.log(key); //give us keys ..
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// // console.log(language[key]); //give us the values of object
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// // console.log(`${key} stands for ${language[key]}`);
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// }
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// const langArray = ["js", "py", "cpp", "swift"];
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// for (const key in langArray) {
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// console.log(key); //give us index
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// }
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// const langArray = ["js", "py", "cpp", "swift"];
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// for (const key in langArray) {
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// console.log(langArray[key]); //give us values on indexes just like js ,py ...
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// }
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// const langArray = ["js", "py", "cpp", "swift"];
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// for (const [key, val] in langArray) {
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// console.log(`the key is ${key} and the value is ${val}`); //undefined..
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// }
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// for (const product in maps) {
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// console.log(product); //gives you nothing
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// }
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// for (const product in maps) {
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// console.log(maps[product]); //gives you nothing
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// }
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//==========================FOR-EACH LOOP ====================================
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const webSeries = ["hostel_days", "jee krda ", "imMature", "Kota-Factory"];
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const favSeries = webSeries.forEach((item, index, arr) =>
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console.log(item, index, arr)
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);
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console.log(favSeries);
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// const favSeries = webSeries.forEach((item) => console.log(item));
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// const favSeries = webSeries.forEach((item) => {
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// return item; // no return
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// });
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// const favSeries = webSeries.forEach(printme);
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// function printme(item) {
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// console.log(item);
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// }
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// console.log(favSeries);

‎04_iterations/while_doWhile.js

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// console.log("hello world ");
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// let i = 0;
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// while (i < 10) {
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// console.log(i);
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// i++;
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// }
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// let i = 0;
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// do {
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// console.log(i);
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// i++;
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// } while (i < 10);
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const Heros = ["spiderman", "Ironman", "Monkeyman"];
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let i = 0;
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while (i < Heros.length) {
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console.log(Heros[i]);
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i++;
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}

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