JavaScript | Symbol.toStringTag symbol

The Symbol.toStringTag is a well-known symbol and string valued property in JavaScript which is used in the creation of the default string description of an object.

Syntax:

Symbol.toStringTag

Parameters: This does not take any parameter.
Return value: This returns the String Object.

JavaScript code to show the working of this function. 
Example-1:

javascript

<script>
    // Illustrating Symbol.toStringTag
    console.log(Object.prototype.toString.call('Geeks'));
    console.log(Object.prototype.toString.call("Geeks"));
    console.log(Object.prototype.toString.call([1, 2, 3, 4]));
    console.log(Object.prototype.toString.call(5));
    console.log(Object.prototype.toString.call(true));
    console.log(Object.prototype.toString.call(false));
    console.log(Object.prototype.toString.call(undefined));
    console.log(Object.prototype.toString.call(null));
</script>

Output:

> "[object String]"
> "[object String]"
> "[object Array]"
> "[object Number]"
> "[object Boolean]"
> "[object Boolean]"
> "[object Undefined]"
> "[object Null]"

Example-2:

javascript

<script>
    // Illustrating Symbol.toStringTag
    class ToString {get [Symbol.toStringTag]() {
       return 'GeeksforGeeks';
      }
    }

    // Getting the string description of the object
    console.log(Object.prototype.toString.call(new ToString()));
</script>

Output:

> "[object GeeksforGeeks]"

Supported Browsers:

• Google Chrome 49
• Firefox 51
• Edge 15
• Opera 36 and above
• Apple Safari 10 and above

Reference: https://devdocs.io/javascript/global_objects/symbol/tostringtag