28 lines
857 B
Markdown
28 lines
857 B
Markdown
---
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title: toCamelCase
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tags: string,regexp,intermediate
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---
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Converts a string to camelcase.
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- Break the string into words and combine them capitalizing the first letter of each word, using a regexp.
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```js
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const toCamelCase = str => {
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let s =
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str &&
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str
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.match(/[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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.map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
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.join('');
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return s.slice(0, 1).toLowerCase() + s.slice(1);
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};
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```
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```js
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toCamelCase('some_database_field_name'); // 'someDatabaseFieldName'
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toCamelCase('Some label that needs to be camelized'); // 'someLabelThatNeedsToBeCamelized'
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toCamelCase('some-javascript-property'); // 'someJavascriptProperty'
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toCamelCase('some-mixed_string with spaces_underscores-and-hyphens'); // 'someMixedStringWithSpacesUnderscoresAndHyphens'
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```
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