8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
17 lines
623 B
Markdown
17 lines
623 B
Markdown
### decapitalize
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Decapitalizes the first letter of a string.
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Use array destructuring and `String.toLowerCase()` to decapitalize first letter, `...rest` to get array of characters after first letter and then `Array.prototype.join('')` to make it a string again.
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Omit the `upperRest` parameter to keep the rest of the string intact, or set it to `true` to convert to uppercase.
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```js
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const decapitalize = ([first, ...rest], upperRest = false) =>
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first.toLowerCase() + (upperRest ? rest.join('').toUpperCase() : rest.join(''));
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```
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```js
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decapitalize('FooBar'); // 'fooBar'
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decapitalize('FooBar', true); // 'fOOBAR'
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```
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