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Return an array of an object's own and inherited writable property names.
import writablePropertyNamesIn from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-writable-property-names-in@esm/index.mjs';Returns an array of an object's own and inherited writable property names.
import defineProperty from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-define-property@esm/index.mjs';
var obj = {
'a': 'b'
};
defineProperty( obj, 'c', {
'configurable': true,
'enumerable': true,
'writable': false,
'value': 'd'
});
var keys = writablePropertyNamesIn( obj );
// e.g., returns [ 'a', ... ]- Name order is not guaranteed, as
objectkey enumeration is not specified according to the ECMAScript specification. In practice, however, most engines use insertion order to sort anobject's keys, thus allowing for deterministic extraction.
<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import defineProperty from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-define-property@esm/index.mjs';
import writablePropertyNamesIn from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-writable-property-names-in@esm/index.mjs';
function Foo() {
this.a = {
'b': 'c'
};
defineProperty( this, 'baz', {
'configurable': true,
'enumerable': true,
'writable': false,
'value': 'qux'
});
return this;
}
Foo.prototype.foo = [ 'bar' ];
defineProperty( Foo.prototype, 'bip', {
'configurable': true,
'enumerable': true,
'writable': false,
'value': 'bop'
});
var obj = new Foo();
var keys = writablePropertyNamesIn( obj );
console.log( keys );
// e.g., => [ 'a', 'foo', ... ]
</script>
</body>
</html>@stdlib/utils-inherited-writable-property-names: return an array of an object's inherited writable property names.@stdlib/utils-writable-properties-in: return an array of an object's own and inherited writable property names and symbols.@stdlib/utils-writable-property-names: return an array of an object's own writable property names.@stdlib/utils-writable-property-symbols-in: return an array of an object's own and inherited writable symbol properties.@stdlib/utils-property-names-in: return an array of an object's own and inherited enumerable and non-enumerable property names.
This package is part of stdlib, a standard library 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.
See LICENSE.
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