Server-sent events, unlike WebSockets, are unidirectional; that is, data packets are transmitted from the server to the client (such as a user's web browser). This makes them a good alternative when data from the client to the server does not need to be sent in message form.

You may use the npm registry to host code that is exclusively available to you and selected collaborators using npm private packages, allowing you to manage and utilize private code alongside public code in your projects.

Cross-Site Request Forgery (CSRF) is a type of attack that causes an authorized user to do undesirable activities on a web application. An attacker can deceive users of a web application into doing activities of the attacker's choosing using social engineering techniques.

There is a traversal API that allows us to find structurally related elements of the document; it treats a document as a tree of element objects. We can access these traversal API by referring to a specific element's parent, children, and siblings properties.

We can use client-side JavaScript's event API to define and dispatch our events using CustomEvent. Assume our application needs to conduct a long computation or a network request on a regular basis, and the other functionality or user interface is unavailable while these operations are in progress.

A stack is an abstract data type that stores an ordered collection of items which follow first in last out (FILO) or last in first out (LIFO) principle; with two principal operations: push, which adds an item to the stack, and pop, which removes the most recently added item.

Dijkstra's algorithm is an algorithm for finding the shortest paths between nodes in a graph, which may represent, for example, road networks. It was conceived by computer scientist Edsger W. Dijkstra in 1956 and published three years later. The algorithm exists in many variants.

Autocomplete or suggestion or typeahead offers a number of possible values while typing. I am going to solve this problem using trie data structure and algorithm.

Web Worker API is a JavaScript web API for running multiple tasks simultaneously without affecting the performance of the apps.

The Beacon API is a JavaScript web API for sending data from the browser to the web server without expecting to get a response. It is used to send analytics, diagnostics, and logging data which doesn't need a response.

Calculate the Euclidean Distance for one dimensional, two dimensional, three dimensional in JavaScript. In mathematics, the Euclidean distance or Euclidean metric is the "ordinary" straight-line distance between two points in Euclidean space.

First, renew letsencrypt ssl certificate. And then copy the new SSL certificate files to zimbra's folder. Follow by replacing the existing commercial key with private key. Finally, deploy and then restart zimbra service.

Edit `Global.asax` file. Import the `System.Net` class and then change the security protocol to tls1.2 in the `Applicatin_Start` method.

Add the <meta charset="utf-8" /> tag inside the head tag of the web page. Also add the following setting inside the <configuration><system.web> tag in the web.config file.