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Angelos Chalaris
2020-09-15 16:28:04 +03:00
parent 040efd4380
commit 53c16dbf65
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10
snippets/functions.md
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@ -5,10 +5,10 @@ tags: object,function,intermediate
Returns an array of function property names from own (and optionally inherited) enumerable properties of an object.
Use `Object.keys(obj)` to iterate over the object's own properties.
If `inherited` is `true`, use `Object.get.PrototypeOf(obj)` to also get the object's inherited properties.
Use `Array.prototype.filter()` to keep only those properties that are functions.
Omit the second argument, `inherited`, to not include inherited properties by default.
- Use `Object.keys(obj)` to iterate over the object's own properties.
- If `inherited` is `true`, use `Object.get.PrototypeOf(obj)` to also get the object's inherited properties.
- Use `Array.prototype.filter()` to keep only those properties that are functions.
- Omit the second argument, `inherited`, to not include inherited properties by default.
```js
const functions = (obj, inherited = false) =>
@ -26,4 +26,4 @@ function Foo() {
Foo.prototype.c = () => 3;
functions(new Foo()); // ['a', 'b']
functions(new Foo(), true); // ['a', 'b', 'c']
```
```