JavaScript Symbol toStringTag Property

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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.

Example 1: In this example, we will use Symbol toStringTag Property

javascript

// 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));

Output

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

Example 2: In this example, we will use Symbol toStringTag Property

javascript

// Illustrating Symbol.toStringTag  
class ToString {
    get [Symbol.toStringTag]() {
        return 'zambiatek';
    }
}
 
// Getting the string description of the object
console.log(Object.prototype.toString.call(new ToString()));

Output

[object zambiatek]

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

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