Test if an object has an inherited property.
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Test if an object has an inherited property.
bash
npm install @stdlib/assert-is-inherited-propertyscript tag without installation and bundlers, use the [ES Module][es-module] available on the [esm][esm-url] branch (see [README][esm-readme]).deno][deno-url] branch (see [README][deno-readme] for usage intructions).umd][umd-url] branch (see [README][umd-readme]).javascript
var isInheritedProperty = require( '@stdlib/assert-is-inherited-property' );boolean indicating if a value has an inherited property.javascript
var obj = {
'beep': 'boop'
};
var bool = isInheritedProperty( obj, 'beep' );
// returns false
bool = isInheritedProperty( obj, 'hasOwnProperty' );
// returns true
bool = isInheritedProperty( obj, 'bap' );
// returns falsenull or undefined. Instead, the function returns false.javascript
var bool = isInheritedProperty( null, 'a' );
// returns false
bool = isInheritedProperty( void 0, 'a' );
// returns falsenull or undefined are coerced to objects.javascript
var bool = isInheritedProperty( 'beep', 'toString' );
// returns truestrings.javascript
function Foo() {
return this;
}
Foo.prototype.null = true;
Foo.prototype[ '[object Object]' ] = true;
var obj = new Foo();
var bool = isInheritedProperty( obj, null );
// returns true
bool = isInheritedProperty( obj, {} );
// returns truejavascript
var isInheritedProperty = require( '@stdlib/assert-is-inherited-property' );
var bool = isInheritedProperty( {}, 'hasOwnProperty' );
// returns true
bool = isInheritedProperty( { 'a': 'b' }, 'a' );
// returns false
bool = isInheritedProperty( { 'a': 'b' }, 'c' );
// returns false
bool = isInheritedProperty( { 'a': 'b' }, null );
// returns false
bool = isInheritedProperty( null, 'a' );
// returns false
bool = isInheritedProperty( void 0, 'a' );
// returns false
bool = isInheritedProperty( { 'null': false }, null );
// returns false
bool = isInheritedProperty( { '[object Object]': false }, {} );
// returns false
