Function
Function constructor.
Installation
npm install @stdlib/function-ctor
Usage
var Function = require( '@stdlib/function-ctor' );
Function( [...argNames,] body )
Returns a new function object.
var greet = new Function( 'name', 'return "Hello, "+name+"!"' );
var v = greet( 'Jane' );
Argument names must be strings corresponding to valid JavaScript parameters (i.e., a plain identifier, or, in environments supporting such parameters, a rest parameter or destructured parameter, optionally with a default).
Notes
- In pre-ES2015 environments, only plain identifiers (without defaults) are valid JavaScript parameters.
- Creating
Function
objects with the Function
constructor is less efficient than declaring a function via a function expression or a function statement. - The
Function
constructor can be invoked without the new
operator (using new
and not using new
both return a new Function
object). - The
Function
constructor creates functions which execute in the global scope. Hence, created functions cannot access variables local to the scope in which functions were created.
Examples
var Function = require( '@stdlib/function-ctor' );
var add = new Function( 'x', 'y', 'return x + y' );
var v = add( 1, 2 );
Notice
This package is part of 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, see the main project repository.
License
See LICENSE.
Copyright
Copyright © 2016-2022. The Stdlib Authors.