Here is my second mock interview experience, where I got an idea of how to learn each concepts and how to understand in different perspective. It was so helpful for me to learn more and grow more. Questions I was being asked in my mock interview are as follows :

1. Self Intro

2. What is Salesforce?

Salesforce is a cloud-based Customer Relationship Management (CRM) platform used by businesses to manage customers, sales, marketing, support, and business processes.

Key Features

• Customer data management


• Sales tracking


• Marketing automation


• Customer support management


• Reports and dashboards


• Cloud-based (accessible from anywhere)

Example

A company can use Salesforce to:

• Store customer details


• Track sales opportunities


• Send marketing emails


• Handle customer complaints

Benefits

• No need to install software locally


• Centralized customer information


• Automation of business processes


• Better customer engagement

3. What is JavaScript (JS)?

JavaScript is a programming language used to make web pages interactive and dynamic.

Uses

• Form validation


• Image sliders


• Dropdown menus


• Animations


• Fetching data from servers


• Building web and mobile applications

Example

alert("Welcome!");

When the page loads, a popup message appears.

Why JS?

HTML creates structure, CSS adds design, and JavaScript adds behavior.

4. Alternate for JavaScript?

Several languages can be used instead of JavaScript in certain scenarios.

Most Popular Alternative

TypeScript

Example:

let age: number = 25;

It helps catch errors during development.

5. What is a Dynamic Language?

A dynamic language is a language where variable types are determined during execution (runtime), not before execution.

JavaScript Example

let data = 10;      // Number

data = "Hello";     // String

data = true;        // Boolean

The same variable can hold different types of data.

Advantages

• Flexible


• Faster development


• Less code

Disadvantages

• Type-related bugs may appear at runtime


• Harder to maintain large applications

JavaScript is a dynamically typed language.

6. Types of Variables in JavaScript

JavaScript provides three ways to declare variables.

1. var

var name = "John";

Characteristics

• Function scoped


• Can be redeclared


• Can be updated
  

var x = 10;

var x = 20;

2. let

let age = 25;

Characteristics

• Block scoped


• Cannot be redeclared


• Can be updated
  

let age = 25;

age = 30;

3. const

const PI = 3.14;

Characteristics

• Block scoped


• Cannot be redeclared


• Cannot be reassigned
  

const PI = 3.14;

// PI = 3.15 ❌ Error

Quick Comparison

7. Difference Between Programming and Coding

Coding Example

console.log("Hello");

Programming Example

Building a Student Management System:

1. Analyze requirements


2. Design database


3. Write code


4. Test application


5. Deploy system

Programming includes coding, but coding alone is not programming.

8. HTML vs HTML5

HTML Example

<div>Header</div>

HTML5 Semantic Tags

<header>Header</header>

<nav>Navigation</nav>

<section>Content</section>

<footer>Footer</footer>

New HTML5 Features

• <audio>


• <video>


• <canvas>


• Local Storage


• Geolocation


• Semantic tags

9. What is Ternary Operator?

A ternary operator is a shortcut for a simple if...else statement.

Syntax

condition ? value1 : value2;

Example

Using if-else:

let age = 20;



if(age >= 18){

    status = "Adult";

}else{

    status = "Minor";

}

Using ternary:

let status = age >= 18 ? "Adult" : "Minor";

When to Use

✅ Simple conditions

let result = marks >= 35 ? "Pass" : "Fail";

When Not to Use

❌ Multiple complex conditions

Use if...else if...else instead.

10. What is default in Switch Case?

The default case executes when none of the cases match.

Example

let day = 8;



switch(day){

    case 1:

        console.log("Monday");

        break;



    case 2:

        console.log("Tuesday");

        break;



    default:

        console.log("Invalid Day");

}

Output

Invalid Day

Can default Be Used Between Cases?

✅ Yes, JavaScript allows default anywhere inside a switch.

Example:

switch(day){

    case 1:

        console.log("Monday");

        break;



    default:

        console.log("Invalid Day");

        break;



    case 2:

        console.log("Tuesday");

        break;

}

Best Practice

Place default at the end because:

• Easier to read


• Common industry standard


• Improves code maintainability

11. What is used to find the type of data used in a program?

typeOf();



Example :



typeOf(123);



Output:

Number

Summary

Salesforce: Cloud-based CRM platform used to manage customers, sales, and support.

JavaScript: Programming language used to add interactivity and dynamic behavior to web pages.

Dynamic Language: A language where variable types are determined at runtime.

Variables in JS: var, let, const.

Programming vs Coding: Coding is writing code; programming includes design, coding, testing, and deployment.

HTML vs HTML5: HTML5 is the latest version with semantic tags, audio, video, canvas, and local storage.

Ternary Operator: Short form of if...else using condition ? value1 : value2.

Default in Switch: Executes when no case matches; can be placed anywhere but is usually kept at the end.