Basic Java Script Functions

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by vsasikalabe dot icon Updated: Feb 26, 2023

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In Javascript, the function keyword is used to define the functions. We can use a function expression or a function declaration. In JavaScript, a function is a set of statements and conditions. It performs a particular task or calculates a value as we want. But sometimes, as a function, it should take some input and return an output where there are some operations between the input and the output. 

Declaring a Function 

The syntax to declare a function is: 

function nameOfFunction () { 

  // function body   

The naming of a function is just similar to naming a variable. The body of the function is always written within {}. We can also write a descriptive name for your function. For example, if a function is used to add two numbers, you could name the function to add or addNumbers. 

Function Return 

To return the value to a function, the return statement is used. It denotes that the function has ended. After the return, the code is not executed. In Javascript the function always returns an undefined value if nothing is returned. 

Benefits of Using a Function 

  • We can declare it once and use it multiple times. The function makes the code reusable. 
  • Each small task is divided into a function so that the function makes the program easier. 
  • The function increases readability. 

Here is an example of how to create basic Javascript Functions: 

Preview of the output that you will get on running this code from your IDE.



Follow the steps carefully to get the output easily.

  1. Download and Install VS Code on your Desktop.
  2. Open the VS Code and install Javascript ES6 Code Snippet and Code Runner from Extensions.
  3. Open the new file and save as example.js (functions.js)
  4. Copy the code using the "Copy" button above, and paste it in your javascript file.
  5. Run the code using (ctr+alt+N) Run button.

I hope you found this useful. I have added version information in the following sections.

I found this code snippet by searching for ' Basic Java Script Functions concept' in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in VS Code 1.73.1 version.
  2. JavaScript (ES6) code snippets v1.8.0
  3. Code Runner v0.11.8

Using this solution, we are able to Create a basic Java Script Functions with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to Create a basic Java Script Functions.


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