Test if a value is a function.
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> Test if a value is a function.
``bash`
npm install @stdlib/assert-is-function
`javascript`
var isFunction = require( '@stdlib/assert-is-function' );
#### isFunction( value )
Tests if a value is a function.
`javascript
function beep() {
console.log( 'beep' );
}
var bool = isFunction( beep );
// returns true
`
`javascript
var isFunction = require( '@stdlib/assert-is-function' );
var bool = isFunction( function foo() {} );
// returns true
bool = isFunction( 'beep' );
// returns false
bool = isFunction( 5 );
// returns false
bool = isFunction( true );
// returns false
bool = isFunction( null );
// returns false
bool = isFunction( [] );
// returns false
bool = isFunction( {} );
// returns false
`
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, 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][stdlib], see the main project [repository][stdlib].
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---
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