Get Variable Name as String in JavaScript

In this post, we will see how to get variable name as String in JavaScript.

There are multiple ways to get Get variable name as String in JavaScript. Let’s go through them.

Using Object.keys()

To get variable name as String in JavaScript, use Object.keys() to get the keys array and get the first element.

Output:

Object.keys() returns an array of provided object’s own property names, iterated in same order similar to for loop or while loop.

Using toString() method

To get variable name as String, we can call toString() method and get variable name from it using replace() method to remove unwanted part of the String.

Output:

The replace() method returns a new string with matches of pattern replaced by a replacement string.

It takes 2 parameters.

1. Regular expression which we want to match in String.
2. Replacement String – String with which we want to replace matched string.

Using hash table

You can use map in these kind of scenarios where you want to map name to some value.
Here is simple example:

Output:

That’s all about how to get variable name as String in JavaScript.