René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Incorrect information about objects and arrays","articleBody":"[The README for JS1 week 3](https://github.com/HackYourFuture-CPH/JavaScript/blob/e2e3dbd0f8ee7a957133a09a507eeed7cf16df89/javascript1/week3/readme.md?plain=1#L40) alleges  that JavaScript has special handling for accessing numerical properties. This is not the case. An array is an object with properties for each index thus it does not differentiate between indexes or properties.\r\n\r\nI regret looking into this as it kinda seems it converts indexes to string and looks up the property based on that. Knowledge I would rather have been without. 😅 \r\n\r\nOne can do a quick experiment to see this:\r\n```js\r\nconst arr = [\"apple\", \"pear\", \"orange\"];\r\nconsole.log(JSON.stringify(Object.getOwnPropertyDescriptors(arr)))\r\n```\r\nwhich yields:\r\n```json\r\n{\r\n    \"0\": {\r\n        \"value\": \"apple\",\r\n        \"writable\": true,\r\n        \"enumerable\": true,\r\n        \"configurable\": true\r\n    },\r\n    \"1\": {\r\n        \"value\": \"pear\",\r\n        \"writable\": true,\r\n        \"enumerable\": true,\r\n        \"configurable\": true\r\n    },\r\n    \"2\": {\r\n        \"value\": \"orange\",\r\n        \"writable\": true,\r\n        \"enumerable\": true,\r\n        \"configurable\": true\r\n    },\r\n    \"length\": {\r\n        \"value\": 3,\r\n        \"writable\": true,\r\n        \"enumerable\": false,\r\n        \"configurable\": false\r\n    }\r\n}\r\n```","author":{"url":"https://github.com/NVedsted","@type":"Person","name":"NVedsted"},"datePublished":"2024-11-30T19:03:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/187/JavaScript/issues/187"}