Trainee shehbaz

codes/functions.js

@@ -1,11 +1,22 @@
 // Function to print trainees' names
 function printTrainees(names) {
-  console.log("Trainees: ");
-  for (let i = 0; i < names.length; i++) {
-    console.log(names[i]);
-  }
+  // console.log("Trainees: ");
+  // for (let i = 0; i < names.length; i++) {
+  //   console.log(names[i]);
+  // }
+  // names.forEach(element => {
+  //   console.log(element);
+
+  // });
+  names.filter(function(name){
+console.log(name);
+  });
+
 }
 
+
+
+
 // Function to check if a name is in the trainees list
 function isTrainee(name, names) {
   for (let i = 0; i < names.length; i++) {
@@ -18,8 +29,20 @@ function isTrainee(name, names) {
 
 // Function to add a new trainee
 function addTrainee(name, names) {
-  names.push(name);
-  console.log(name + " added to the trainees list.");
+  if(names.includes(name)){
+
+ return console.log(name + " name is already exist");
+  }
+  // const temp=name;
+  // let newTemp=[name].concat(traineesList)
+
+  //  names.concat(newTemp);
+  names.unshift(name);
+  return console.log(name + "  added to the trainees list.");
+
+
+  // names.push(name);
+  // console.log(name + " added to the trainees list.");
 }
 
 // Example usage
@@ -38,8 +61,10 @@ let traineesList = [
   "tehzeeb",
 ];
 
+
+
+isTrainee("Ehtisham", traineesList);
+addTrainee("Ehtisham", traineesList);
 printTrainees(traineesList);
 
-isTrainee("Shehbaz", traineesList);
-addTrainee("Ali", traineesList);
 

codes/mernStackPractice/Map.js

@@ -0,0 +1,7 @@
+const a=[4,9,16];
+console.log(a.map(Math.sqrt))
+
+
+const val=[2,3,4];
+const l=val.map((n) => n*2);
+console.log(l);

codes/mernStackPractice/array.js

@@ -0,0 +1,10 @@
+// let car=["BMW","Roll Royce"];
+// console.log(car);
+
+const fruit = ["banana","apple"];
+console.log(fruit);
+// const val = fruit.toString();
+const val = fruit.sort();
+
+console.log(val);
+

codes/mernStackPractice/at.js

@@ -0,0 +1,8 @@
+const ArrayNumber=[2,4,5,6];
+const index =3;
+console.log(`Using an index of "${index}" the item returned is "${ArrayNumber.at(index)}"`);
+// const b=a.at(2);
+// console.log(b);
+for (var i = 0; i < 10; i++) {
+console.log(i + ": " + i*3 + "<br/>");
+}

codes/mernStackPractice/class.js

@@ -0,0 +1,5 @@
+let message="ALi";
+console.log(message);
+
+
+

codes/mernStackPractice/concat.js

@@ -0,0 +1,4 @@
+let name1="Muhammad";
+let name2="Aslam";
+let fullname=name1.concat(name2);
+console.log(fullname);

codes/mernStackPractice/concatination.js

@@ -0,0 +1,33 @@
+let x = 1;
+
+x = -x;
+console.log( x ); // -1, unary negation was applied
+let d = 1, y = 3;
+console.log( y - d ); // 2, binary minus subtracts values
+let name="Shamdun"+"Travel";
+console.log(name);
+console.log('1' +1);
+let output = 2 * 2 + 1;
+
+console.log( output ); // 5
+let n = 2;
+n = n + 5;
+n = n * 2;
+console.log(n);
+let m = 2;
+m += 5; // now n = 7 (same as n = n + 5)
+m *= 2; // now n = 14 (same as n = n * 2)
+
+console.log( m ); // 14
+let counter = 2;
+counter++;        // works the same as counter = counter + 1, but is shorter
+console.log( counter ); // 3
+let a = (1 + 2, 3 + 4);
+
+console.log( a ); // 7 (the result of 3 + 4)
+let f = 1, b = 1;
+
+let c = ++f; // ?
+let h = b++; // ?
+console.log(c);
+console.log(h);

codes/mernStackPractice/doWhileloop.js

@@ -0,0 +1,17 @@
+let i = 0;
+while (i < 3) { // shows 0, then 1, then 2
+    console.log( i );
+    i++;}
+    let condition = 3;
+while (condition) { // when i becomes 0, the condition becomes falsy, and the loop stops
+  console.log( condition );
+  condition--;
+}
+let value = 0;
+do {
+  console.log( value );
+  value++;
+} while (value < 3);
+for (let k = 0; k < 3; k++) { // shows 0, then 1, then 2
+    console.log(k);
+  }

codes/mernStackPractice/endsWith.js

@@ -0,0 +1,2 @@
+let name="I love Gilgit Baltistan";
+console.log(name.endsWith("n"));

codes/mernStackPractice/every.js

@@ -0,0 +1,3 @@
+const a=[2,4,5,6];
+const b=a.every((x)=>x <8);
+console.log(b);

codes/mernStackPractice/filter.js

@@ -0,0 +1,4 @@
+let a=[2,5,6,4];
+// const found = a.filter(element => element ===2);
+ let b=a.filter((n) => n%2 === 1);
+console.log(b);

codes/mernStackPractice/find.js

@@ -0,0 +1,28 @@
+let a=[4,5,6,9];
+let b=a.find((n)=>n%2===0);
+console.log(b);
+//find an object in an array by one of its properties
+const inventory = [
+    { name: "apples", quantity: 2 },
+    { name: "bananas", quantity: 0 },
+    { name: "cherries", quantity: 5 },
+  ];
+
+  function isCherries(fruit) {
+    return fruit.name === "apples";
+  }
+
+  console.log(inventory.find(isCherries));
+
+  // { name: 'cherries', quantity: 5 }
+
+//Using arrow function and destructuring
+  const inven = [
+    { name: "apples", quantity: 2 },
+    { name: "bananas", quantity: 0 },
+    { name: "cherries", quantity: 5 },
+  ];
+
+  const result = inven.find(({ name }) => name === "cherries");
+
+  console.log(result); // { name: 'cherries', quantity: 5 }

codes/mernStackPractice/function.js

@@ -0,0 +1,8 @@
+const x=(x,y) =>x*y
+{
+    console.log(x(3,4));   //Arrow Function
+}
+const t=(y,v) =>{
+    return y+v;
+}
+console.log(t(5,5));

codes/mernStackPractice/functionSum.js

@@ -0,0 +1,8 @@
+function sum(){
+    let pencil=12;
+    let pen=4;
+    let total=pencil+pen;
+   return total
+
+}
+console.log(sum());

codes/mernStackPractice/helo.js

@@ -0,0 +1,6 @@
+let firstName = null;
+let lastName = null;
+let nickName = "Supercoder";
+
+// shows the first defined value:
+alert(firstName ?? lastName ?? nickName ?? "Anonymous");

codes/mernStackPractice/ifElse.js

@@ -0,0 +1,13 @@
+//let year = console.log('In which year was ECMAScript-2015 specification published?', '');
+let year=2015;
+// if (year == 2015) 
+// console.log( 'You are right!' );
+// let y = console.log('In which year was the ECMAScript-2015 specification published?', '');
+
+if (year == 2015) {
+  console.log( 'Wow! Its correct' );
+} 
+else {
+  console.log( 'Ops! Try again' ); // any value except 2015
+}
+

codes/mernStackPractice/includes.js

@@ -0,0 +1,2 @@
+let name ="Baltistan";
+console.log(name.includes("u"));

codes/mernStackPractice/indexOf.js

@@ -0,0 +1,2 @@
+let value="Skardu";
+console.log(value.indexOf("d"));

codes/mernStackPractice/join.js

@@ -0,0 +1,2 @@
+let a=["a","b","c"];
+console.log(a.join("-"))

codes/mernStackPractice/lastIndexOf.js

@@ -0,0 +1,2 @@
+let value="Skardu";
+console.log(value.lastIndexOf("d"));

codes/mernStackPractice/match.js

@@ -0,0 +1,2 @@
+let value="SKardu";
+console.log(value.match(/[A-Z]/g));

codes/mernStackPractice/object.js

@@ -0,0 +1,5 @@
+let person="ali"
+console.log(person);  //simple object
+
+const car = {type:"Fiat", model:"500", color:"white"}; // object key value pair
+console.log("The Car Name is ",car.type,"its model is ",car.model,"and color is ",car.color );

codes/mernStackPractice/package.json

@@ -0,0 +1,16 @@
+{
+  "dependencies": {
+    "babel": "^6.23.0"
+  },
+  "name": "import",
+  "version": "1.0.0",
+  "description": "Import & Export ",
+  "main": "repeat.js",
+  "devDependencies": {},
+  "scripts": {
+    "start":"nodemon repeat.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

codes/mernStackPractice/padEnd.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.padEnd(8,"i"));

codes/mernStackPractice/padStart.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.padStart(8,"i"));

codes/mernStackPractice/pop.js

@@ -0,0 +1,3 @@
+let output=["Ali","Hassan"];
+output.pop();
+console.log(output);

codes/mernStackPractice/reduce.js

@@ -0,0 +1,12 @@
+let a=[2,3,5,6,4];
+let b=a.reduce((acc, cur)=>acc+cur);
+console.log(b);
+
+
+const numbers=[100,40,10]
+const output=numbers.reduce(add);
+console.log(output);
+
+function add(total, num){
+    return total-num;
+}

codes/mernStackPractice/repeat.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.repeat(3)); 

codes/mernStackPractice/replace.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.replace("lu","lo"));

codes/mernStackPractice/reverse.js

@@ -0,0 +1,3 @@
+const ArrayNumber=[2,4,5,6];
+const result=ArrayNumber.reverse();
+console.log(result);

codes/mernStackPractice/search.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.search("p"));

codes/mernStackPractice/shift.js

@@ -0,0 +1,3 @@
+const fruits = ["Banana", "Orange", "Apple", "Mango"];
+fruits.shift();
+console.log(fruits);

codes/mernStackPractice/slice.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.slice(1,3));

codes/mernStackPractice/some.js

@@ -0,0 +1,3 @@
+const numbersArray=[2,4,5,6];
+const output=numbersArray.some((x)=>x >4);
+console.log(output);

codes/mernStackPractice/split.js

@@ -0,0 +1,2 @@
+let value="Khaplu";
+console.log(value.split("a"));

codes/mernStackPractice/startWith.js

@@ -0,0 +1,2 @@
+let name="I love Gilgit Baltistan";
+console.log(name.startsWith("I"));

codes/mernStackPractice/string.js

@@ -0,0 +1,8 @@
+// let x=3;
+// x +=x;
+// console.log(x);
+
+let val="Gilgit Baltistan";
+let output=val.charAt(7);
+console.log(output);
+export default val;