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When should we use .bind(), .call() and .apply() methods ?

Usage of bind, call and apply methods

Posted on January 2, 2017

It is necessary to understand how .bind(), .call() and .apply() method works before finding the use cases to apply these methods. As we know, functions in JS are special type of objects and it contains .bind(), .call() and .apply() methods by default, serving special purpose. Let me explain it through... [Read More]

Tags: .bind(), .call(), .apply(), JS

JavaScript context execution stack, functions and variable environments

Do you know about scope chain?

Posted on December 11, 2016

What is JavaScript execution context stack? Whenever JS engine runs a piece of code, the environment in which it is executed is called execution context where variables and functions are actually resolved or executed. Whenever a function is invoked, JS engine creates a new execution context and pushes it on... [Read More]

Code execution behaviour in JS, every JS developer should know.

Do you know about Hoisting?

Posted on December 8, 2016

Whenever we declare var x = 5, we might think it as one statement but the JavaScript enginee does not see it this way. It sees var x = undefined and x = 5 as two different statements which is explained in detail below with an example. Eventhough interpreter interprets... [Read More]

Understanding Closures in JavaScript

Most powerful feature of JavaScript - Closure

Posted on December 4, 2016

1. What are Closures? Closures are the functions that refers to independent variables i.e variables that are used locally but defined in an enclosing scope. In other word a closure is an inner function that has access to the outer (enclosing) function’s variables—scope chain.The closure has three scope chains: it... [Read More]

Deadly sins of javascript implementation

Javascript bad practices

Posted on December 3, 2016

1. Using global variabes, functions and DOM level-1 event handlers unappropriately Global variables and function defined in one script can be overwritten by second script if it has same names. This might cause unexpected results. Therefore, we should be careful while using global variables or functions or event handlers. Every... [Read More]

What happens when assignment operator is used between primitives and objects.

Memory allocation by reference or by value ?

Posted on November 15, 2016

Assignment (=) operator used between primitives Let me explain what does this mean through an example var a = 3; var b; b = a; // here a , b are primitive values console.log(a + "," + b); // prints 3 , 3 a = 4; console.log(a +","+ b); //... [Read More]

Awesome trip to Mustang, Nepal

One of the "must visit" places in Nepal

Posted on November 10, 2016

Whoever wants to feel the serene beauty of Nepal, must visit Mustang. I would definately recommend trek lovers to trek around mustang despite of several challenges. The best season to travel Mustang is October and November because we can see the pure beauty of landscapes, waterfalls, hills and so on... [Read More]

Weird parts of JavaScript?

Collection of code snippets whose result looks unusual

Posted on February 20, 2016

Just to understand how JS works, I have been trying to make a list of JS code snippets whose output looks unusual to me. I am aware that, this is how JS works but it makes me feel weird about JS. Please let me know if you have figured out... [Read More]

Student visa renewal experience in Munich, Germany

Process to renew your student visa in Munich, Germany

Posted on February 16, 2016

This post aims to provide information about the process of renewing student visa based on my personal experience. If you are studying in Technical University Of Munich (TUM) or LMU or any other university based in Munich you should process all your government related works (eg. renew visa, address registration,... [Read More]

How to organise a dramatical play to understand OSI layers of computer network?

Understand basic concept of OSI layers by playing this game.

Posted on July 1, 2015

Most of the teachers fail to explain about the OSI model related to computer networking. I came up with the idea that could help students realise about the basic purpose of OSI layers. Basically there are 7 layers in an OSI model. It can be explained by inviting 14 students... [Read More]