23 lines
864 B
Markdown
23 lines
864 B
Markdown
### renameKeys
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Renames multiple object keys
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Get the object's keys with `Object.keys()` and return an object with the new keys, according to the `keysMap`, using `Array.reduce()`.
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The initial value is an empty object which is used as the accumulator, `acc`, in the callback function. Using the spread operator `(...)`, `acc` is continuously merged with a new object containing the new key and original object's value. If a new key doesn't exist, fallback to original object's key.
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```js
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const renameKeys = (keysMap, obj) => Object
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.keys(obj)
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.reduce((acc, key) => ({
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...acc,
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...{ [keysMap[key] || key]: obj[key] }
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}), {});
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```
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```js
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const obj = { name: 'Bobo', job: 'Front-End Master', shoeSize: 100 };
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renameKeys({ name: 'firstName', job: 'passion' }, obj);
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// { firstName: 'Bobo', passion: 'Front-End Master', shoeSize: 100 }
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```
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