Monday, August 10, 2020

Learn Javascript Step by Step What is Javascript javascript Complete Knowlwdge

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 JavaScript is a programming language. I believe it's a great language to be your first programming language ever. We mainly use JavaScript to create websites web applications server-side applications using Node.js but JavaScript is not limited to these things, and it can also be used to create mobile applications using tools like React Native create programs for microcontrollers and the internet of things create smartwatch applications It can basically do anything. It's very popular that everything new that shows up is going to have some kind of JavaScript integration at some point. JavaScript is a programming language that is:

high level: 

it provides an abstraction that allows you to ignore the details of the machine where it's running on. Which manages memory automatically with a garbage collector, so you can focus on the code instead of managing memory like other languages like C would need, and provides many constructs that  allow you to deal with highly powerful variable and object. 

dynamic

Opposit  to static programming languages, a dynamic language executes at runtime many of the things that a static language does at compile time.   and which gives us powerful features like dynamic content  typing, late binding, reflection, functional programming, object runtime alteration, closures, and much more. Don't worry if those things are unknown to you - you'll know all of those at the end of the course.

dynamically typed:

 a variable does not enforce a type. You can reassign 5 any type to a variable, for example, assigning an integer to a variable that holds a string. 

loosely typed: 

as opposed to strong typing, loosely (or weakly) typed languages do not enforce the type of an object, allowing more flexibility but denying us type safety and type checking  

 interpreted: 

which commonly known as an interpreted language, which means that it does not need a compilation stage before a program can run, as opposed to C, Java, or Go for example. In practice, the browser does compiles JavaScript before executing it, for performance reasons, but this is transparent to you: there is no additional step involved. 

multi-paradigm:

The language does not reinforce any particular programming paradigm, unlike Java for example, which forces the use of object-oriented programming, or C that forces imperative programming. You can write JavaScript using an object-oriented paradigm, using prototypes and the new (as of ES6) classes syntax. You can write JavaScript in a functional programming style, with its first-class functions, or even in an imperative style (C-like). In case you're wondering, JavaScript has nothing to do with Java, it's a poor name choice but we have to live with it. 

Javascript Syntax



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