Value Is Symbol

Introduction

In this lab, we will explore the concept of symbols in JavaScript. Symbols are a new primitive type introduced in ECMAScript 6 that represent unique identifiers. We will learn how to create symbols, use them as property keys in objects, and check if a given value is a symbol.

Checking if a Value is a Symbol in JavaScript

To check if a value is a symbol primitive in JavaScript, you can use the typeof operator. Here's an example code snippet that you can use:

const isSymbol = (val) => typeof val === "symbol";

You can call the isSymbol function and pass a symbol as an argument to check if it returns true. Here's an example:

isSymbol(Symbol("x")); // true

Summary

Congratulations! You have completed the Value Is Symbol lab. You can practice more labs in LabEx to improve your skills.