Saturday, December 10

Internships.

 

What is an internship?

An internship is an official work experience initiative offered by organisations aimed at providing practical knowledge to students and recent graduates (called interns) in their fields of expertise. It offers students hands-on experience to supplement their theoretical proficiency and allows them to be better equipped at applying their knowledge (both practical and theoretical) in an office setting.

Nowadays, almost all companies from large multinational corporations to small startups in

all sectors of the economy offer different internship programs with differing benefits, durations, and job placement offers. In addition, there has been a rise in many global companies offering virtual internships. All these organisations offer internships for students at different levels- undergraduate, graduate or even postgraduate.

Difference between an Internship and Cooperative Education

The table below highlights the difference between cooperative education and internship. 

InternshipsCooperative Education
Internships are usually unpaid. However, recent trends have shown that paid internship programs are on the rise.Most students get paid in cooperative education.
Internships usually last for a much shorter duration, usually one semester and mostly finished during the summer break.Cooperative education tends to be more of full-time employment. It can last anywhere between two semesters and the entire duration of your academic program.
In internships, your responsibilities remain the same as assigned at the start of your joining as an intern.In cooperative education, as your semester progresses, so does your responsibilities
In internships, students are not necessarily offered major-related work.In cooperative education students are usually offered major-related work within the framework of their academic program.
Internships are usually not for academic credits and do not form a part of students’ official transcripts.Cooperative education is for academic credits and forms a part of students’ official transcripts.

Benefits of doing an Internship

There’s a common belief that the sole motive behind doing an internship is to enrich your CV and that is far from the truth. Although an internship does enrich your CV, it has a much larger bearing on shaping your employability in the labour market.

Let us delve into the benefits of doing Internships one by one.

1. Compliments your theoretical knowledge.

An internship helps you gain hands-on experience with what you have already learnt in your classroom and helps you apply your knowledge in an official work environment with different factors at play such as teamwork, deadlines, employee relationship, office work culture and stress. This prepares you to be better equipped for employment once you begin your career.

2. Serves as a litmus test.

An internship helps you to get familiar with what to expect from a career path you have chosen in an office setting and allows you to explore whether you have made the right decision or not. It gives scope for one to understand his/her strengths and weaknesses and the opportunity to make changes before his/her career takes off. This experiment can help you streamline your career opportunities according to your demand in a particular job position and prevent you from securing a job that is not for you.

3. Offers job placement.

A recent trend shows that companies often seek interns who would consider working for them in a full-time position if their performance during the internship is satisfactory. Getting a placement offer from a company as an intern shows the faith the company has in you.

This apart from the perks of a promised job, additionally it is a huge confidence booster for a fresher and can be a huge boost in your hunt for another job even if you decide not to take the offer.

4. Platform for skill enhancement.

During internships, interns are exposed to real office environments. It allows you to learn how to work under stress, with deadlines and with peers. It helps you to understand your specific duties and responsibilities and how to deliver your task effectively. Valuable

feedback and suggestions from your mentors can help align your skill sets with what is demanded by the task at hand.

5. Helps develop professionalism.

Internships open doors for dealing with people in a professional setting, be it, clients, peers, or superiors. It helps you learn how to communicate professionally. In addition, having a dedicated mentor can be impactful when it comes to your development as a professional.

6. Forge professional networks and connections.

As an intern, you get to meet people with the same interests, clients and business partners which increases your chances of growing as a professional. It allows you to make

professional bonds and build contacts in your field. Connections within the industry can help you secure better positions in the future through recommendations.

7. Help imbibe collaborative work ethics.

In a competitive industry, having technical knowledge is not enough, you can be the best in

your field but in an office setting, you are not alone and are required to work as a team. Internships help you to master the soft skills required for a collaborative work environment

and inculcate teamwork ethics. This can help you to better prepare for the real-life office environment.

8. An Opportunity to become financially independent.

Nowadays many companies are offering paid internships. Apart from helping you gain entry- level experience, it can help you support yourself financially and indirectly give a glimpse of how it feels to be a breadwinner. It can thus help you to learn how to be financially responsible during college itself.

9. Open doors for other internship opportunities.

The professional experience you have gained in the previous internship programs can help land you into another internship at different companies or different positions within the

same company. Continuation with these opportunities can help secure you a good job profile as it shows your commitment and your appetite for developing your professional skills. In addition, companies network themselves with one another and send recommendations within their network.

10. Platform to pursue new interests.

Internships you decide to pursue do not necessarily need to relate to your academic field. Each one of them provides ample opportunities to experience another branch of your field (offshoots) or an adjacent field. This allows you to test your capabilities in diverse areas and help you to develop new transferable skills. This not only enhances your CV but also gives you an edge to secure better jobs in diverse fields.

Importance of internship

Nowadays, with continuous developments in technology and the ever-increasing birth of new sectors and sub-sectors in the economy, the established relationship between traditional courses offered by our higher education institutions and the jobs demanded in the market is not in tune anymore. Also fuelled by the growing competition, the labour market is getting more and more skewed towards the skilled. Hence it is no surprise that our college degrees alone do not necessarily land us into our desired job profiles. Mastery in certain sets of skills is now increasingly becoming the yardstick of employability. ‘The more skilled you are, the better you sell in the labour market!’ Therefore apart from companies as well as academia, more and more students are increasingly putting the focus on the importance of internships during the time of higher education as a parallel to their traditional academic curriculum.

How can an internship help you get a better job?

An internship is one of the best ways to have a practical hands-on experience with what we have already learnt in our classrooms, it offers us an opportunity to take a brief look at what it is like to work for a living, and gives us insights on how our chosen career is like at an industry level and what it takes to succeed in that field. It also serves as an important platform for career exploration- i.e, to experiment in related or adjacent fields to develop new interests and fine tune and supplement old ones and to better understand our likes and dislikes. It also gives us an idea about organisational structures such as hierarchies, employer-employee relations, workplace cultures etc. and imbibes professionalism through its soft skill enhancement opportunities, especially in communication, problem-solving, teamwork, leadership and delivering tasks under stress and deadlines. Professional feedback that one gains from an experienced mentor in itself helps one to understand his/her strengths and weaknesses and to implement changes as required. Not only that, different job roles and positions offered by different internship programs help you to understand the ins and outs of different responsibilities and can help prevent you from landing an ill-fitting job once your career takes off.

Therefore it is crystal clear from the above discussion that doing internships during college

already gives you an edge over your peers in getting a better job. Not to forget, an internship also serves as a great platform to make professional connections, building connections with peers in the same industry might just play an enabling role in securing you better jobs in future to come. In addition, paid internships are offered nowadays by different companies. Although interns get paid much less than regular employees, this can help ease the financial crunch and we all know how tight the money can get during college.

How to choose the right internship

Having discussed the fundamentals of Internships, the question arises, “How does one choose the right internship program?”

Much like a job hunt, finding the right internship can be a daunting task and it is naturally hard to understand the potential value of a particular internship when you are a newbie. It is to be remembered that there is nothing like a ‘perfect internship’ and choosing one is solely at the discretion of an individual as all of us have different aspirations and dreams when it comes to career choices.

Thus, there is no tailor-made strategy on how to end up with the right internship. However, it would be a crime if we were to end this article without giving generic tips on how to finalize the right internship.

Here are things worth considering while choosing an internship program – 

  1. Do not be behind the money alone.
  2. Decide on what sector you would like to do an internship in.
  3. Choose the ones that are best aligned with your future career path.
  4. Chalk out your preferred companies where you wanna do your internship.
  5. Make a bucket list of what you are looking for as an intern.
  6. Consider what skills you will learn from the internship.
  7. Consider the amount of time you have.
  8. Try to go with an internship that gives you scope for networking.
  9. More emphasis on the ones with placement offers.
  10. Read reviews and online ratings from previous interns.

To sum it up, switching from college life to professional life is not always easy as both worlds are very different from one another. Once you enter a professional workforce, it is demanded of you to mould yourself to fit into the professional environment and is an undisputed fact that an internship opportunity is one of the best workforce readiness programs. Although internships are most often linked to college students, there is no hard and fast rule as to who can apply for internships, internships are open to everybody. The truth of the matter is – gaining industry experience offers ample opportunities regardless of what field you are in, or what your desired career path is, as it lays the foundation for your employability and equips you with the set of skills required to kickstart your career and to which we would like to sign off by saying ‘Happy Internship’ to all of you.

Friday, December 9

Interview Questions

 Are you looking for JavaScript interview questions? You have arrived at the right place. JavaScript is an open-source scripting language designed for creating applications. It is lightweight, interpreted, and works faster than many other programming languages. It is the third biggest web technology to develop online and mobile applications, games, web servers, etc., that can be used in browsers.

In this article, we will mention some of the most popular and important JavaScript interview questions for beginners, intermediate, and advanced levels. So, let’s get started!

JavaScript Interview Questions For Beginners

Here are some JavaScript interview questions for beginners that you need to know:

Q: What is JavaScript?

Ans: JavaScript is a popular open-source programming and scripting language for enhancing web pages and creating an excellent user experience. It differs from Java language and is an object-based, cross-platform, translated, and lightweight language widely used for client-side scripting.

Q: What are the benefits of JavaScript?

Ans: Like other programming languages, JavaScript also has its advantages, which are as follows:

  • Speed: It is an interpreted and client-side scripting language, which reduces the time needed by other programming languages, such as Java, for compilation.
  • Simple: JavaScript is an easy-to-understand and learns, where the structure is relatively simple for both users and developers. It is relatively easy to execute, saving a lot of money to build creative and dynamic web content.
  • Versatile: It is a versatile language capable of both front-end and back-end development. Back-end development uses NodeJS, while several other libraries help in front-end development, like AngularJS, ReactJS, etc.
  • Less Overhead: JavaScript reduces the code length, which helps in enhancing the performance of websites and web applications. The codes comprise less overhead because of multiple built-in functions for DOM, loops, access, etc.

Q: What is a Function in JavaScript?

Ans: Functions in JavaScript are just like a process, a group of statements that performs a task or calculates a value. It is a set of reusable codes which can be called anywhere in the program, eliminating the need to repeat the code. In simpler terms, it enables the programmer to divide a big program into several small and convenient functions.

Example of Function Declaration

This is an example of Function Declaration to give you a brief understanding:

Function abc(domain) {
const abc = `Contract jobs ${domain}`;
console.log(abc);

Example of Function Expression

This is an example of Function Expression to give you a brief understanding:

const abc = function () {
const abc = `Contract jobs ${domain}`;
console.log(abc);
 }

Q: List some essential features of JavaScript.

Ans: JavaScript is a popular language with multiple features when developing a web application. Some of them are as follows:

  • Lightweight Scripting Language: It is a lightweight scripting language, as it is made for managing data on the browser. It is not a general-purpose language, having only considered a set of libraries. Besides, it is also developed for client-side execution for web applications; thus, it is lightweight.
  • Stable Control: JavaScript offers stable control to the browser instead of being completely confided on the web servers. It offers multiple browsers with additional functionalities that help reduce server load and network traffic.
  • Client-side Calculations: JavaScript is a client-side scripting language, it can perform simple calculations on the browser. The browser does not need to ask for permission for every task. It is highly helpful when a user needs to perform these calculations multiple times. In such cases, connecting to the server will take much more time than executing the actual calculations.
  • Generating HTML Content: JavaScript has useful features for producing HTML content for the website. It allows the developers to add texts, tables, links, images, etc., after an event comes up.

Q: What is the difference between Java and JavaScript?

Ans: Here is the significant difference between Java and JavaScript:

JavaJavaScript 
Java is a strongly typed programming language.It is a scripting language.
It is an object-oriented programming language.It is an object-based language.
It is a standalone language.It is not a standalone language because it needs to combine into an HTML program for implementation.
A strongly types language, making users choose the data type of a variable before declaring using it.A loosely typed language makes users not bother about the variable’s data type before and after the declaration.
It should be merged before the execution.It needs to be incorporated into the HTML program for implementation.
A difficult language to learnAn easy language to learn
Not required to run Java programsRequired to run JavaScript programs.
By using multi-threading, developers can perform difficult tasksUsers are not able to perform complicated tasks
It was developed by Sun Microsystems.It was developed by Netscape.

Q: What is BOM in JavaScript?

Ans: BOM, also known as the Browser Object Model, is one of the essential elements of JavaScript on the web. It offers all the objects and functionality and lets the developers interact with the browser.

Q: What is DOM in JavaScript?

Ans: DOM stands for Document Object Model, which is the data representation of the objects that includes the structure and content of a document on the web. In simple terms, it is a programming interface for web documents, representing the page so that programs can change the style, content, and document structure.

Q: What is the real name of JavaScript?

Ans: JavaScript was developed by Brendan Eich of Netscape Communications Corporation. It was originally named Mocha, then LiveScript, and again renamed to JavaScript.

Q: What is the use of a history object in JavaScript?

Ans: The JavaScript History is a built-in Interface used to access the browser history. It contains the list of links visited by the user in a specific browser window, frame, tab, etc. It is an essential property of the JavaScript window object, which can be accessed via the window.history property.

Q: What is an anonymous function in JavaScript?

Ans: It is a function without having any name. These functions are used differently during the runtime, using the function operator rather than the function declaration. It is relatively more flexible than function declaration and can be easily used in the place of an expression.

Javascript Interview Questions For Intermediate

Here are some JavaScript interview questions for Intermediate-level that you need to know:

Q1: What is the need for debugging in JavaScript?

Ans: Debugging is one of the essential and must-have skills for developers. It is the process of identifying the bugs and resolving them to enhance the efficient running of programs. JavaScript has multiple debugging strategies and tools to improve the performance of the code.

Q2: What is the role of a strict mode in JavaScript?

Ans: Strict Mode is a new feature that enables developers to place a function or program in a strict operating context. It prevents some particular actions from being taken, making JavaScript a safer option.

Q3: What is the use of Math Object in JavaScript?

Ans: Math is a built-in object with properties and methods for mathematical constants and functions, where its properties and methods are static. Unlike other objects, it has no constructor.

Q4: What is the meaning of hoisting in JavaScript?

Ans:  Hoisting in JavaScript is a concept which allows you to remove values of variables and functions even before providing value without getting errors. It enables functions to be safely used in code before their declaration.

Q5: What are the types of scopes in JavaScript?

Ans:  There are four types of scopes in JavaScript, which are as follows: 

  • Block Scope: Initially, JavaScript has Global and Function scope. let, and const are the two important keywords developed by ES6, which provide Block Scope in JavaScript. To access the variables of this specific block, you need to create an object for it.   
  • Local Scope: Local scope comprises things that are declared inside the code blocks and only accessible where it is declared.
  • Function Scope: JavaScript also has a function scope, where each function creates a new scope. Variables explained inside a function cannot be accessed from outside the function, and variables declared with let, var, and const are just like when declared inside a function.
  • Global Scope: Variables declared Globally, outside any function, can be accessed from anywhere in a program. These include Global Scope and Global variables, similar to function scope variables declared with var, let, and const, similar to when declared outside the block.

Q6: What is a callback in JavaScript?

Ans: Callback in JavaScript is a function that is passed to another function as an argument, which is then gathered inside the outset function to execute some routine and action. It is needed because multiple actions in JavaScript are asynchronous, which means they do stop the function from running till the time they are completed. Rather, it will run in the background while the rest of the code is still running.

Q7: What is the difference between Function declaration and Function expression?

Ans: Here is the significant difference between Function Declaration and Function Expression:

Function DeclarationFunction Expression
Also known as a function statement, declares a function with a function keyword. However, the function declaration must have a function name.Just like a function declaration without having any function name.
Does not require a variable assignment because they are standalone constructs and cannot be put inside a functional block.Can be stored in a variable assignment.
Executed before any other code.Load and execute only when the program interpreter gets the code line.
Can be accessed before and after the function explanation.Can be accessed only after the function definition.

Q8: How can you add JavaScript code to HTML pages?

Ans: You can add JavaScript code to HTML pages in three ways, which are as follows:

  • Embedding Code: For adding JavaScript code into HTML pages, you can use the <script>….</script> HTML tag that covers around JavaScript code inside the HTML program. You can also place JavaScript code in the body or head section, as it entirely relies on the design of the web page that developers use.
  • Inline Code: This process is used to call a function in the HTML event attributes. There are multiple events or cases where developers have to add JavaScript code.
  • External File: Developers can also make a separate file to keep the code of JavaScript with the (.js) extension and later add it to the HTML document. You can do it using the src attribute of the <script> tag. It helps maintain the web pages and also saves time from writing the same code again.

Q9: How can you delete a cookie in JavaScript?

Ans: You can delete a cookie in JavaScript in multiple ways, such as by using expire attribute, web browser, and max-age attribute.

Q10: What are the closures in JavaScript?

Ans: Closures are an essential JavaScript concept that every developer needs to know. It is a property of JavaScript that refers to independent variables, also known as free variables. It is a feature in which the inner function has access to the outer function variable. The three scope chains of closure are as follows:

  • Access to the outer variables
  • Access to its own scope
  • Access to the global variables

JavaScript Interview Questions For Advanced Level

Here are some JavaScript interview questions for Advanced-level that you need to know:

Q: Name three JavaScript frameworks and their uses.

Ans: There are various JavaScript frameworks, and here are the most popular ones:

  • Angular: It is a powerful JavaScript framework which works across multiple operating systems. It works by using HTML vocabulary on different web pages. Angular is a cross-platform framework, easy to comprehend and has fewer errors via its concise and data rendering technique. Apart from this, it can work on multiple operating systems.
  • Vue JS: It is another JavaScript framework usually used in building cross-platform applications and websites. Other than that, it is also used to build Single Page Applications. It is flexible, small in size, easy to understand, and provides two-way communication.
  • React JS: It is an open-source and one of the best JavaScript frameworks to create responsive and active UI (user interfaces). It is also SEO-friendly and highly recommended by developers who create e-commerce websites. Its key features include one-way data-binding only, Virtual Document Model (DOM), ability to test and debug quickly.

Q: What are object prototypes?

Ans:  Prototypes are objects where JavaScript inherit features from one another. Simply, it is used to add new properties and methods to already existing objects and object constructors.

Q: What is memoisation?

Ans: Memoisation is one of the best techniques to make applications work faster and more effectively. It caches the results and retrieves the same information from the cache when it is needed next time for cashing instead of adding it again.

Q: What is the difference between the client-side and the server-side scripting?

Ans: Here are the significant differences between client-side and server-side scripting:

Client-side Scripting Server-side Scripting  
The main purpose is to give the requested output to the end-userThe main purpose is to manipulate and offer access to the requested database
It is used at the front end, and the source code is visible to the userIt is employed at the backend, where the source code is not shown to the users as its output of server-side is an HTML
Does not need interaction with the serverRequires interaction with the server
Relatively less secure because of code accessibility given to the clientHighly secure while working on the web application as the code is not visible
Executed on the remote computer systemExecuted on the web server
Highly depends on the user’s browser versionDoes not depend on the client
Does not provide any access to the files on webProvides complete access to the file that is stored in the web database server
Customise web pages and offer unique websitesReduces server load

Q: What is a WeakMap?

Ans: A WeakMap is a structure of key/value pairs that only allows objects as keys and removes them altogether with the related value once it cannot be accessed.  It permits associating data to objects in a way that does not prevent the key objects from being collected, even if the values show the key.

Q: What is Event Bubbling in JavaScript?

Ans: Event bubbling is a strategy of event circulation in the HTML DOM API when an event is in an element that is inside another element, and both of those elements have registered a handle to that event. In simple words, it is an element that triggers the event and then bubbles up other elements in the library.

Q: State the difference between declaring variables using var, let, and cont.

Ans:  Here are the major differences between var, let, and const:

varlet const 
The scope of a varvariable in functional scopeThe scope of a let variable is block scopeThe scope of a const variable block scope
Can be updated and re-declared into the scopeCan be updated, but it cannot be re-declared into the scopeCannot be updated or re-declared into the scope
Can be declared without initialisationCan be declared without initialisationCannot be declared without initialisation
Can be accessed without initialisation because its default value is not definedCannot be accessed without initialisation, else it will give ‘referenceError’Cannot be accessed and declared without initialisation
Hoisting is done by initialising as default valueHoisting is done, but not initialisedHoisting is done but not initialised

Q: What are undeclared and undefined variables?

Ans: 

Undefined Variable Undeclared Variable 
An undefined variable is a variable which has been declared but does not have a value.An undeclared variable is a variable that does not even exist in the program.

Q: What is Event Capturing in JavaScript?

Ans: Event capturing is one of the two ways of event distribution in the HTML DOM. In this process, the outermost element triggers the target element, which is the opposite of event bubbling.

Q: What is Strict mode in JavaScript?

Ans: Strict mode in JavaScript is a newly added feature which permits specific JS code to behave dynamically in a semantic order to secure it.

Conclusion 

Now you know all the essential JavaScript interview questions, you can start preparing for them. Practice makes a man perfect, so sit in front of the mirror and ask yourself questions as if you are giving your interview. If you want to learn more about JavaScript, you can get yourself enrol in JavaScript training.

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