Practice Set 1 in JavaScript

 //Question 1 :

//Create a variable of type String and try to add a number to it

let a = "Harry"

let b = 10

console.log(a + b)

//Question 2 :

//Use typeof operator to find the datatype of the string in last question

console.log(typeof (a + b))

//Question 3 :

//Create a const object in javascript can you change it to hold a number later ?

//Answer : No, we can not change it to hold a number later

const a2 = {

    name: "Harry",

    section: 1,

    isPrinciple: false

}

// a2 = "Harry" //Will give Error

// a2 = 54  // Will give Error

//Question 4 :

//Try to add a new key to the const object in problem 3 were you able to do it ?

//Answer : Yes, we are able to do it as shown below

a2["friend"] = "Shubham";   //Add member in a2 Object

a2["name"] = "Prakash";     //Update member in a2 Object

console.log(a2)

// a2 = {}     //We can't assign another Object to a2

//Question 5 :

//Write a JS program to create a word-meaning dictionary of 3 words

const dict = {

    appreciate: "recognize the full worth of",

    ataraxia: "a state of freedom from emotional disturbance and anxiety",

    yakka: "work, especially hard work"

}

console.log(dict)

console.log(dict.appreciate)

console.log(dict["ataraxia"])

console.log(dict.yakka)

OUTPUT :

Harry10 string { name: 'Prakash', section: 1, isPrinciple: false, friend: 'Shubham' } { appreciate: 'recognize the full worth of', ataraxia: 'a state of freedom from emotional disturbance and anxiety', yakka: 'work, especially hard work' } recognize the full worth of a state of freedom from emotional disturbance and anxiety work, especially hard work