JS: List Properties
To list properties of a object, use one of the following methods. Which one to use depends on if you want enumerable keys only, and or including symbol keys.
| syntax | meaning | proto chain | enumerable only | include symbol key | include string key |
|---|---|---|---|---|---|
Object.keys(o)
| 〔►see JS: Object.keys〕 | no | yes | no | yes |
Object. getOwnPropertyNames(o)
| 〔►see JS: Object.getOwnPropertyNames〕 | no | no | no | yes |
Object. getOwnPropertySymbols(o) | 〔►see JS: Object.getOwnPropertySymbols〕 | no | no | yes | no |
Reflect.ownKeys(o) | 〔►see JS: Reflect.ownKeys〕 | no | no | yes | yes |
〔►see JS: Property Attributes〕
Array-Like Object to Array
〔►see JS: Array-Like Object to Array〕
Iterable Object to Array
If the object is iterable, use:
Array.from(iterable)
〔►see JS: Array.from〕
Array Topic
- JS: Array Basics
- JS: Understand JS Array
- JS: Create Array
- JS: Sparse Array
- JS: Array-Like Object
- JS: Array How-To
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