BennisonDevadoss

// "Mangos", is a value. if you want to see this on a console.
console.log("Mangos"); // Mangos
console.log(23); // and here 23 is a value. 
let firstName = "Bennison"; 
console.log(firstName); // Bennison

BennisonDevadoss

let variable = "value";
console.log(variable)    // value
let variable = "value";  // value

BennisonDevadoss

const variable = "value"
console.log(variable);   //value
variable = "new value";   // This  line will give an error "Uncaught TypeError: Assignment to constant variable"

BennisonDevadoss

var variable = "value"
console.log(variable)  // value
variable = "New Value" 
console.log(variable)  // New Value
var variable = "string"
console.log(variable)  // string

BennisonDevadoss

console.log(Boolean(undefined))   // false
console.log(Boolean(null))        // false
console.log(Boolean(NaN))         // false
console.log(Boolean(0))           // false
console.log(Boolean(""))          // false 

BennisonDevadoss

let firstName = "Bennison"
let lastName = undefined
if(lastName){
  console.log(`Hello ${firstName} ${lastName}`);
}
else{
  console.log(`Hello ${firstName}`);   // Bennison

BennisonDevadoss

let a; 
let total = 1 + 2;
let string = "value" + "value";
let multiply = 1 * 1

BennisonDevadoss

const variable = "value";

if(variable){
  let newVariable = "New Value";
}

BennisonDevadoss

// 1. init code
export function setup() {
  // 2. setup code
}
export default function (data) {
  // 3. VU code
}
export function teardown(data) {
  // 4. teardown code
}

BennisonDevadoss

let a = 10; 
let b = 20;

let result = a > 0 && b > 10
console.log( result )      // true

// a > 0 is operand one    -------> The condition is true
// b > 10 is operand two   -------> The condition is true

// Here, The both conditions are same, So th AND Operator returns the true.