Java developers are always want to there code to be in proper syntax to easily readable and understood for anyone. It's a frontend programming language. NodeJS language is similar to this language. That's one of the popular languages in the world.
There are lots of features available since it starting but now the latest version is ES2020. That has the best advanced features in JavaScript to make your work easier and finish it as soon as possible. This article is based on modern syntax for javascript for best practice for beginners.
What is JavaScript?
JavaScript is a programming language. JS stands for that and is also known as ECMAScript. It's a high-level programming language that is commonly used by developers to design web pages. It has curly-bracket syntax, dynamic typing, prototype-based object orientation, and first-class functions.
List of Modern Syntax For Best Practice JavaScript
- Logical Assignment Operator
- Numeric Separators
- Default Parameters
- Template Literals
- String Padding
- Object Iterators
- Array.prototype.includes()
1. Logical Assignment Operator
The logical AND (&) operator is only used when the variable is true and logical OR (||) is only useful when the value of the variable is false. Logical OR assignment gives a fairer choice to undefined marks. we need to find out the number of times an element repeats itself in an array. That's the best modern syntax for JavAScript. Let's see the example.
2. Numeric Separator
JS has a large source code to execute, including the variable, attributes, numbers, and more. For numbers, you have to use a separator to easily readable the number of amounts. By using the separation in between numbers makes it easy to read and that is a good sign for developers to use the proper syntax for JS.
3. Default Parameter
The default parameter is allowed to use a parameter with a default variable in the function definition, which would only be admitted if the said parameter is not provided. This is a useful feature when you are using a function or not. That's the best modern syntax for javascript.
4. Template Literals
Template literals are string literals allowing embedded expressions. You can use multi-line strings and string interpolation features with them. It can contain a placeholder. That's designated by (${expression}). This is the modern syntax for javascript.
5. String Padding
There are two types of string padding:
- string start
- string end
1. String Start
In this method, the string will be started from the front, not from the end. It's used to hide a value from start and see the values of some numbers from the end. It's enough to classify the variable as right or wrong.
2. String End
This method allows you to add a character or special character at the end of a string. Let's see the example to get more clear.
6. Object Iterator
There are three object iterators available to see Keys, values, and entries. Object.keys() returns an array of all the keys of an object, Object.values() returns an array of all the values, and Object.entries() returns an array of [key, value] pairs. That's the best modern syntax of javascript to use. Let's see the example.
7. Use includes() Function
The includes() method will return true if the element exists in the given array. You can also pass argument using fromIndex. That's the best modern syntax of javascript. Let's see the example of includes().