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A Critical Review on Blockchain and Its Current Applications  Abstract  Blockchain technology has been known as a digital currency platform since the emergence of Bitcoin, the first and the largest of the cryptocurrencies. Blockchain has numerous benefits such as decentralization, persistency, anonymity and auditability. There is a wide spectrum of blockchain applications ranging from cryptocurrency, financial services, risk management, internet of things (IoT) to public and social services. Although a number of studies focus on using blockchain technology in various application aspects, there is no comprehensive survey on the blockchain technology in both technological and application perspectives. To fill this gap, we conduct a comprehensive survey on the blockchain technology. In particular, this paper gives the blockchain taxonomy, introduces typical blockchain consensus algorithms, reviews blockchain applications and discusses technical challenges as well as recent advanc...

What is JavaScript  JavaScript is the programming language of HTML and the Web . It is often abbreviated as JS, is a high-level, interpreted programming language that conforms to the ECMAScript specification This enables interactive web pages thus it is an essential part of web applications.  The vast majority of websites use it, and all major web browsers have a dedicated JavaScript engine to execute it. Features of JavaScript JavaScript is a single threaded language. An  object -based scripting language. Giving the user more control over the browser. It Handling dates and time. It Detecting the user's browser and OS, It is light weighted. JavaScript is a scripting language and it is not  java . JavaScript is interpreter based scripting language. Most popular JavaScript Frameworks Selecting from amongst even the most popular JavaScript frameworks for a new project can be a challenging process. Nonetheless, it is essential to find the c...