Package Exports

@stdlib/function-ctor
@stdlib/function-ctor/lib/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@stdlib/function-ctor) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

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' );
// returns 'Hello, 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 );
// returns 3

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.

Community

License

See LICENSE.

@stdlib/function-ctor