19 lines
628 B
Markdown
19 lines
628 B
Markdown
### lowercaseKeys
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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.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) => {acc[key.toLowerCase()] = obj[key]; return acc;},{});
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```
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```js
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let myObj = {Name: 'Adam', sUrnAME: 'Smith'};
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let myObjLower = lowercaseKeys(myObj);
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console.log(myObj); // {Name: 'Adam', sUrnAME: 'Smith'};
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console.log(myObjLower); // {name: 'Adam', surname: 'Smith'};
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```
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