Node.js uses the CommonJS module system to organize code. This means when you want to use code from other files, you use methods like ‘require’. Additionally, Node.js also supports ‘ES6 import and export’ for this purpose. Let us understand in detail....

Binary Search is a searching technique that works on the Divide and Conquer approach. It is used to search for any element in a sorted array. Compared with linear, binary search is much faster with a Time Complexity of O(logN), whereas linear search works in O(N) time complexity...

In this article, we will see how to create JWT tokens in Node.js. We will implement secure authentication in Node.js by creating and verifying JSON Web Tokens (JWTs) using libraries like `jsonwebtoken`....

When we open our package.json file and search for the dependency property and in there we find the packages that are listed as a nested object of the dependency property package-name:package-version. Now look at the package version, we find some numbers separated by three dots....

Semicolon is a punctuation mark (;) indicating a pause, typically between two main clauses, that is more pronounced than that indicated by a comma. In programming, Semicolon symbol plays a vital role. It is used to show the termination of instruction in various programming languages as well, like C, C++, Java, JavaScript and Python....

The following approach covers how to create a Weather Application in Vanilla JavaScript using Open Weather Map API. Using this API, we can get weather data for each coordinate....

In this article I’m trying to explain the difference/similarities between dynamic programming and divide and conquer approaches based on two examples: binary search and minimum edit distance (Levenshtein distance)....

Now these days, OTP (one time password) is mandatory in almost each and every service. A developer can generate OTP in many ways but the challenge is not to be predictive as any one can predict the OTP and can exploit the service....

Web Crawler is a bot that downloads the content from the internet and indexes it. The main purpose of this bot is to learn about the different web pages on the internet. This kind of bots is mostly operated by search engines. By applying the search algorithms to the data collected by the web crawlers, search engines can provide the relevant links as a response for the request requested by the user. In this article, let’s discuss how the web crawler is implemented....

To find property values from an array containing multiple objects in JavaScript, we have multiple approaches. In this article, we will learn how to find property values from an array containing multiple objects in JavaScript....

Two pointers is really an easy and effective technique which is typically used for searching pairs in a sorted array.Given a sorted array A (sorted in ascending order), having N integers, find if there exists any pair of elements (A[i], A[j]) such that their sum is equal to X....

Multiple methods can be used to duplicate an array in JavaScript.The fastest way to duplicate an array in JavaScript is by using the slice() Method. Let us discuss some methods and then compare the speed of execution....