JavaScript Array

JavaScript For Beginners (Array, Object, and Function)


What is JavaScript?

 

First, we’re going to be looking at JavaScript Array, object and function. Last year, many learners in the world started with JavaScript. Why? JS is primarily referred to as the language of the latest web browsers, and its early quirks gave it a touch of a nasty reputation. However, the language has continued to  improve. JavaScript may be a powerful, flexible, and fast programming language now getting used for increasingly complex web development and beyond!

 

Introduction To JavaScript Arrays and Console

Console

The console may be a panel that shows important messages, like errors and code for developers. Much of the work the pc does with our code is invisible to us by default. If we would like to ascertain things appear on our screen, we will print, or log, to our console directly.


In JS, the console keyword refers to an object, a set of knowledge and actions, that we will use in our code. Keywords are words that are built into the JavaScript language, therefore the computer will recognize them and treats them specially.

 

JavaScript Variable

A JavaScript variable is just a reputation of storage location. There are two sorts of variables in local variable and global variable.

There are some rules while declaring a JS variable (also referred to as identifiers).

Name must start with a letter (a to z or A to Z), underscore(_), or dollar($) sign.
After the first letter, we will use digits (0 to 9), for instance value1.
JS variables are case-sensitive, for instance x and X are different variables.

Data Type

There are 7 primitive data types:

 

JavaScript Array


  1. string,
  2. number,
  3. bigint,
  4. boolean,
  5. null,
  6. undefined,
  7.  symbol

 

What is Array in JavaScript With Example?

 

JavaScript Array

In JavaScript, an JavaScript Array is an ordered list of values. Each value is named a component specified by an index. … First, an JavaScript Array can hold values of various types. For instance, you’ll have an array that stores the amount and string, and boolean values.

 

What  is function in JavaScript

 

A function may be a group of reusable code which may be called anywhere in your program. This eliminates the necessity of writing an equivalent code again and again. It helps programmers in writing modular codes. Functions allow a programmer to divide a big program into piece of smaller and manageable functions.

Like any other advanced programming language, JavaScript also supports all the features necessary to write down modular code using functions. You want to have seen functions like alert() and write() within the earlier chapters. We were using these functions again and again,

Conclusion

 

Since JS remains at the core of web development, it’s often the primary language learned by self-taught coders wanting to learn and build. We’re excited for what you’ll be ready to create with the JS foundation you gain here. JS powers the  behavior on most websites.


In this lesson, you will learn introductory coding concepts, data types and built-in objects—essential knowledge for all aspiring developers.

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