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Update snippet descriptions

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Isabelle Viktoria Maciohsek
2020-10-19 18:51:03 +03:00
parent f0fbe0c3e5
commit 5e8e6f51a3
36 changed files with 97 additions and 82 deletions
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snippets/dig.md
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@ -3,10 +3,11 @@ title: dig
tags: object,recursion,intermediate
---
Returns the target value in a nested JSON object, based on the given key.
Gets the target value in a nested JSON object, based on the given key.
- Use the `in` operator to check if `target` exists in `obj`.
- If found, return the value of `obj[target]`, otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
- If found, return the value of `obj[target]`.
- Otherwise use `Object.values(obj)` and `Array.prototype.reduce()` to recursively call `dig` on each nested object until the first matching key/value pair is found.
```js
const dig = (obj, target) =>
@ -28,4 +29,4 @@ const data = {
};
dig(data, 'level3'); // 'some data'
dig(data, 'level4'); // undefined
```
```