36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
---
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title: Sentencecase string
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type: snippet
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tags: [string,regexp]
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cover: sofia-tram
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author: chalarangelo
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dateModified: 2023-03-27T05:00:00-04:00
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---
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Converts a string to sentence case.
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- Use `String.prototype.match()` to break the string into words using an appropriate regexp.
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- Use `Array.prototype.slice()`, `Array.prototype.join()` and `String.prototype.toUpperCase()` to combine them, capitalizing the first letter of the first word and adding a whitespace between them.
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```js
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const toSentenceCase = str => {
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const s =
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str &&
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str
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.match(
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/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g
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)
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.join(' ');
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return s.slice(0, 1).toUpperCase() + s.slice(1);
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};
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```
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```js
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toSentenceCase('some_database_field_name'); // 'Some database field name'
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toSentenceCase('Some label that needs to be title-cased');
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// 'Some label that needs to be title cased'
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toSentenceCase('some-package-name'); // 'Some package name'
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toSentenceCase('some-mixed_string with spaces_underscores-and-hyphens');
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// 'Some mixed string with spaces underscores and hyphens'
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```
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