22 lines
612 B
Markdown
22 lines
612 B
Markdown
---
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title: lowercaseKeys
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tags: object,intermediate
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---
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Creates a new object from the specified object, where all the keys are in lowercase.
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Use `Object.keys()` and `Array.prototype.reduce()` to create a new object from the specified object.
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Convert each key in the original object to lowercase, using `String.toLowerCase()`.
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```js
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const lowercaseKeys = obj =>
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Object.keys(obj).reduce((acc, key) => {
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acc[key.toLowerCase()] = obj[key];
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return acc;
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}, {});
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```
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```js
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const myObj = { Name: 'Adam', sUrnAME: 'Smith' };
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const myObjLower = lowercaseKeys(myObj); // {name: 'Adam', surname: 'Smith'};
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``` |