Category: 11. Apis

Server Sent Events are a way of sending data from a server to a web page, without requiring the page to refresh or make requests. These events are useful for creating real-time applications, such as chat, news feeds, or notifications. Using SSE, we can push DOM events continuously from our web server to the visitor’s browser.…

HTML introduces two mechanisms, similar to HTTP session cookies, for storing structured data on the client side, without sending it to the server. These two storage mechanisms are session storage and local storage. Both are collectively part of the HTML5 Web Storage API. They were introduced to overcome the following drawbacks of cookies − To use session storage…

WebSockets is a next-generation bidirectional communication technology for web applications which operates over a single socket and is exposed via a JavaScript interface in HTML 5 compliant browsers. After establishing a Web Socket connection with the web server, we can send data from browser to server by calling a send() method, and receive data from server to browser…

JavaScript was designed to run in a single-threaded environment, meaning multiple scripts cannot run at the same time. Consider a situation where you need to handle UI events, query and process large amounts of API data, and manipulate the DOM. JavaScript will hang your browser in situation where CPU utilization is high. Let us take…

Drag and Drop (DnD) is powerful User Interface concept which makes it easy to copy, reorder and deletion of items with the help of mouse clicks and movements. This allows the user to click and hold the mouse button down over an element, drag it to another location, and release the mouse button to drop the…

HTML5 Geolocation API lets you share your location with your favorite web sites. A JavaScript can capture your latitude and longitude and can be sent to backend web server and do fancy location-aware things like finding local businesses or showing your location on a map. Today most of the browsers and mobile devices support Geolocation…