About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
Test if a value is a symbol.
import isSymbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-symbol@esm/index.mjs';Tests if a value is a symbol.
import Object from 'https://cdn.jsdelivr.net/gh/stdlib-js/object-ctor@esm/index.mjs';
import Symbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/symbol-ctor@esm/index.mjs';
v
8000
ar bool = isSymbol( Symbol( 'beep' ) );
// returns true
bool = isSymbol( Object( Symbol( 'beep' ) ) );
// returns trueTests if a value is a primitive symbol.
import Object from 'https://cdn.jsdelivr.net/gh/stdlib-js/object-ctor@esm/index.mjs';
import Symbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/symbol-ctor@esm/index.mjs';
var bool = isSymbol.isPrimitive( Symbol( 'beep' ) );
// returns true
bool = isSymbol.isPrimitive( Object( Symbol( 'boop' ) ) );
// returns falseTests if a value is a Symbol object.
import Object from 'https://cdn.jsdelivr.net/gh/stdlib-js/object-ctor@esm/index.mjs';
import Symbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/symbol-ctor@esm/index.mjs';
var bool = isSymbol.isObject( Symbol( 'beep' ) );
// returns false
bool = isSymbol.isObject( Object( Symbol( 'boop' ) ) );
// returns true<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import hasSymbolSupport from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-has-symbol-support@esm/index.mjs';
import Symbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/symbol-ctor@esm/index.mjs';
import isSymbol from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-symbol@esm/index.mjs';
var bool;
if ( hasSymbolSupport() ) {
bool = isSymbol( Symbol( 'beep' ) );
// returns true
} else {
console.log( 'Environment does not support symbols.' );
}
bool = isSymbol( 'beep' );
// returns false
bool = isSymbol( {} );
// returns false
bool = isSymbol( [] );
// returns false
bool = isSymbol( null );
// returns false
bool = isSymbol( void 0 );
// returns false
bool = isSymbol( true );
// returns false
bool = isSymbol( function foo() {} );
// returns false
</script>
</body>
</html>This package is part of stdlib, a standard library with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2025. The Stdlib Authors.
