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# camelcase [](https://travis-ci.org/sindresorhus/camelcase) > Convert a dash/dot/underscore/space separated string to camelCase or PascalCase: `foo-bar` → `fooBar` --- <div align="center"> <b> <a href="https://tidelift.com/subscription/pkg/npm-camelcase?utm_source=npm-camelcase&utm_medium=referral&utm_campaign=readme">Get professional support for 'camelcase' with a Tidelift subscription</a> </b> <br> <sub> Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies. </sub> </div> --- ## Install ``` $ npm install camelcase ``` ## Usage ```js const camelCase = require('camelcase'); camelCase('foo-bar'); //=> 'fooBar' camelCase('foo_bar'); //=> 'fooBar' camelCase('Foo-Bar'); //=> 'fooBar' camelCase('Foo-Bar', {pascalCase: true}); //=> 'FooBar' camelCase('--foo.bar', {pascalCase: false}); //=> 'fooBar' camelCase('foo bar'); //=> 'fooBar' console.log(process.argv[3]); //=> '--foo-bar' camelCase(process.argv[3]); //=> 'fooBar' camelCase(['foo', 'bar']); //=> 'fooBar' camelCase(['__foo__', '--bar'], {pascalCase: true}); //=> 'FooBar' ``` ## API ### camelCase(input, [options]) #### input Type: `string` `string[]` String to convert to camel case. #### options Type: `Object` ##### pascalCase Type: `boolean`<br> Default: `false` Uppercase the first character: `foo-bar` → `FooBar` ## Security To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. ## Related - [decamelize](https://github.com/sindresorhus/decamelize) - The inverse of this module - [uppercamelcase](https://github.com/SamVerschueren/uppercamelcase) - Like this module, but to PascalCase instead of camelCase - [titleize](https://github.com/sindresorhus/titleize) - Capitalize every word in string - [humanize-string](https://github.com/sindresorhus/humanize-string) - Convert a camelized/dasherized/underscored string into a humanized one ## License MIT © [Sindre Sorhus](https://sindresorhus.com)