What is ES6 JavaScript?

JavaScript is an advanced programming language which enables us to efficiently define and manipulate objects and methods, with features including passing arguments to functions as arguments; creating walk functions; using arrow functions for specific goals; as well as passing arguments during callback functions.

Concept of JavaScript and its Function: “auric” is the name of the first argument passed to this function, while point returns a new instance of walk that points directly at an object representing people.

Calling the walk function brings up a person object in the console. Additionally, we can leverage properties and methods available within JavaScript such as binding methods that are commonly seen within Reactor apps.

When combined, these methods allow us to permanently set values of person objects. By calling bind on walk functions we obtain new ones attached permanently to person objects.

One of the hallmarks of modern JavaScript is arrow functions, which enable us to define constants and functions attached directly to objects in JavaScript’s programming language. Overall, JavaScript offers users versatile solutions for designing complex yet dynamic applications.

ES6 Class in React applications

React applications benefit greatly from using component classes, which is a third-party library stored within Node Modules folder, to import every file into their React applications. Import statements work similar to their online equivalent.

React isn’t really a module; rather it is a third-party library used to extend our modules. When we remove components from React modules, their names are automatically renamed into named exports for us to take action on them later.

So when we delete this component and press Ctrl+space, all exported names become visible within React module.

Modularising in ES6

Modularising an application with modules. Bypassing relative past files or modules and the current folder. Instead, we import files imported from person classes directly into our current module.

Returning to the person module, and employing Teacher class again. Import curly again before using curly braces to form pure teacher in relative past. We then call teaching method save the changes while console displays “teach message beautiful”.

Modularised the application and implemented its teaching method. All objects defined within modules by default are private; that means they won’t be accessible from outside unless exported explicitly. This gives control to administrators over which objects can or can’t be exported to external parties.

We successfully modularized an application by employing modules and their associated classes.

Map method in ES6 javascript

Map returns an array of new elements without changing its original array, making code easier and ensuring accurate results. A callback function offers another straightforward approach.

Simply simplifying our code can also make things simpler; just remove the function keyword and place a fat arrow before its name; we could even get rid of parentheses, return keyword to library and place all on one line.

Outcome of mapping or transformation. Each caller’s array of colors will be transformed into strings; similarly, every variety of colours will return one string as their outcome.

We can further optimize this code, by refining its structure and eliminating redundant parameters, to produce more streamlined code that’s both clean and effective.

This code offers an efficient and straightforward method for rendering a list of colours using list items. By streamlining our code and eliminating unnecessary parameters, we can achieve cleaner and more effective code.

Callback function in ES6

Callback functions are non-object-related functions that allow accessing person objects from within their callback functions.

By employing “stretched” mode, we can access a person object directly within our callback function without explicitly invoking “self”. With this approach we are able to gain access to any person object within it without reference explicitly “self”.

Calling this function from within a callback function returns the window object instead of console due to being non-object based and therefore unlike Person object’s talk method.

Instead of the “strike” mode, we can utilize “stretched”. Now within our callback function we can use “self” to access a person object directly within it.

“Stretched” mode does not alter this behaviour and allows accessing of person objects within callback functions without calling “self” explicitly.

ES6 VAR keyword

JavaScript’s use of the “var” keyword introduces another new keyword called const, used for declaring block-scoped constants only accessible within their block; this differs from defining variables as constants.

Const is used when declaring variables to indicate they cannot be changed later; hence it’s considered constant because nothing changes with it.

JavaScript objects are collections of key-value pairs used to define variables. When assigning variables using Const, any visible changes indicate they cannot change and therefore they become read-only in the browser, signifying that this variable cannot change over time.

Understanding how VAR and LOC interact in JavaScript code is integral for developing consistent, efficient code that remains reliable over time.

By understanding their respective differences and their application in their JavaScript programs, developers can better leverage them for maximum impactful code writing and maintenance.

String in ES6

String identification of members in ES6 JavaScript. The name property can be assigned varying values as necessary; bracket notation should only be used if we do not know in advance what property or method to access.

Constant calls can be used to establish and set the name for target members that need a name; such as input fields on forms. Value properties can also be directly accessed using dynamic references as shown here.

Dock notation allows accessing properties or methods within an object, while JavaScript’s use of its unique keyword, “j”, may cause confusion due to how differently it behaves compared to C# or Java.

String to identify target member; use of bracket notation to represent unknown properties/methods/property types; dock notation is then employed to access properties/methods directly.

Conclusion

JavaScript ES6 features provide developers with powerful tools for crafting dynamic and efficient applications. Arrow functions, the bind method, modularisation are among the many concepts available that allow them to write more manageable code that’s easier on maintenance costs.

Developers can optimize their code further while managing data efficiently by taking advantage of features like the map method, callback functions and const keyword.

Understanding the subtle nuances of JavaScript keywords like var, const and string manipulation techniques is integral for maintaining code clarity and reducing errors.

These modern JavaScript features allow developers to construct scalable and maintainable applications quickly and cost effectively, making JavaScript an efficient language for front-end and back-end development.