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isMethod
Test if an object has a specified method name.
Installation
npm install @stdlib/assert-is-methodUsage
var isMethod = require( '@stdlib/assert-is-method' );isMethod( value, property )
Returns a boolean indicating if a value has a specified own method name.
function noop() {
// Example function...
}
var value = {
'beep': noop
};
var bool = isMethod( value, 'beep' );
// returns true
bool = isMethod( value, 'toString' );
// returns falseNotes
-
Value arguments other than
nullorundefinedare coerced toobjects.var bool = isMethod( 'beep', 'toString' ); // returns false
-
Property arguments are coerced to
strings.function noop() { // Example function... } var value = { 'null': noop }; var bool = isMethod( value, null ); // returns true value = { '[object Object]': noop }; bool = isMethod( value, {} ); // returns true
-
The function searches only own properties.
Examples
var isMethod = require( '@stdlib/assert-is-method' );
var bool = isMethod( { 'a': isMethod }, 'a' );
// returns true
bool = isMethod( { 'a': 'b' }, 'a' );
// returns false
bool = isMethod( { 'a': 'b' }, null );
// returns false
bool = isMethod( {}, 'toString' );
// returns false
bool = isMethod( null, 'a' );
// returns false
bool = isMethod( void 0, 'a' );
// returns false
bool = isMethod( { 'null': isMethod }, null );
// returns true
bool = isMethod( { '[object Object]': isMethod }, {} );
// returns trueSee Also
-
@stdlib/assert-has-own-property: test if an object has a specified property. -
@stdlib/assert-is-function: test if a value is a function. -
@stdlib/assert-is-method-in: test if an object has a specified method name, either own or inherited.
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.
Copyright
Copyright © 2016-2024. The Stdlib Authors.