Define a Variable with a Variable in JavaScript

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by Abdul Rawoof A R dot icon Updated: Feb 25, 2023

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In JavaScript, a variable is nothing but a name of storage location, and there are two types of variables: local and global. 

A quantity that may change within the context of mathematical problems or experiments is a variable, and typically, we can use a single letter to represent a variable in JavaScript. To define a variable using another variable, write the keyword let followed by the name of the variable we want to give. After a value is assigned to a variable using the assignment operator in JavaScript, we can assign the value of that variable to another variable by using the assignment operator. The generic symbols used for variables are common: x, y, and z. 

In JavaScript, a variable can be defined using var, let, and const keywords: 

  1. To declare variables since JavaScript was created, the var keyword is used. 
  2. The let keyword removes the confusion and error of the variable. 
  3. The const keyword is used to declare a constant variable that cannot be changed once assigned a value. 

Here is an example of how to define a variable with another variable in JavaScript:

Fig : 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. Install JavaScript ES6 code snippet and Code Runner from Extension on your IDE(We use Visual Studio Code).
  2. Copy the snippet using the 'copy' and create one new file filename.js(eg.test.js) then paste the code in that JavaScript file.
  3. Save the file and run the file using run button to generate the output.

I hope you found this useful.

I found this code snippet by searching for 'How can i define a variable with a variable in javascript' 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 and tested in Visual Studio Code 1.74.1.
  2. JavaScript ES6 Code Snippet version v1.8.0.
  3. Code Runner version v0.11.8.

Using this solution, we are able to define a variable with a variable in javascript 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 define a variable with a variable in javascript.


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