stdlib-js
<summary>
About stdlib...
</summary>
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
propertyDescriptor
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Return a property descriptor for an object's own property.
bash
npm install @stdlib/utils-property-descriptor
javascript
var propertyDescriptor = require( '@stdlib/utils-property-descriptor' );
#### propertyDescriptor( obj, property )
Returns a property descriptor for an object's own property.
javascript
var obj = {
'a': 1,
'b': 2
};
var desc = propertyDescriptor( obj, 'a' );
// returns {'configurable':true,'enumerable':true,'writable':true,'value':1}
Object.getOwnPropertyDescriptor() as follows:
- If provided null or undefined, the function returns null, rather than throwing an error.
- If an object does not have a provided property, the function returns null, rather than undefined.
javascript
var defineProperty = require( '@stdlib/utils-define-property' );
var propertyDescriptor = require( '@stdlib/utils-property-descriptor' );
function Foo() {
this.beep = 'boop';
this.a = {
'b': 'c'
};
defineProperty( this, 'baz', {
'value': 'qux',
'configurable': true,
'writable': true,
'enumerable': false
});
return this;
}
Foo.prototype.foo = [ 'bar' ];
var obj = new Foo();
var desc = propertyDescriptor( obj, 'baz' );
console.log( desc );
// => {'configurable':true,'enumerable':false,'writable':true,'value':'qux'}
@stdlib/assert-has-own-property][@stdlib/assert/has-own-property]: test if an object has a specified property.
- [@stdlib/utils-define-property][@stdlib/utils/define-property]: define (or modify) an object property.
- [@stdlib/utils-property-descriptor-in][@stdlib/utils/property-descriptor-in]: return a property descriptor for an object's own or inherited property.
- [@stdlib/utils-property-descriptors][@stdlib/utils/property-descriptors]: return an object's own property descriptors.
