JavaScript: Check whether the given argument is a symbol

JavaScript fundamental (ES6 Syntax): Exercise-186 with Solution

Check If Symbol

Write a JavaScript program to check whether the given argument is a symbol.

• Use typeof to check if a value is classified as a symbol primitive.

Sample Solution:

JavaScript Code:

// Define a function 'isSymbol' that checks if the type of value 'val' is 'symbol'
const isSymbol = val => typeof val === 'symbol';

// Test cases to check if the provided values are symbols
console.log(isSymbol(Symbol('x'))); // true (Symbol('x') is a symbol)
console.log(isSymbol(Symbol(1)));   // true (Symbol(1) is a symbol)
console.log(isSymbol(Symbol(')'))); // true (Symbol(')') is a symbol)

Output:

true
true
true

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-186-1 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that returns true if a given value is of type symbol.
• Write a JavaScript function that uses typeof to check if an argument is a Symbol and logs the result.
• Write a JavaScript program that compares a value to Symbol() and returns a boolean indicating its symbol status.
• Write a JavaScript function that verifies whether an input is a symbol by checking its constructor name.

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