Change Case

Convert strings between camelCase, PascalCase, Title Case, snake_case, lowercase, UPPERCASE, CONSTANT_CASE and more.

All methods support non-ASCII characters and non-string entities, such as objects with a toString property, numbers and booleans. Empty values (null and undefined) will result in an empty string.

Every method is also available on npm as individual packages.

Installation

npm install change-case --save

Usage

var changeCase = require('change-case');
//=> { isUpperCase: [Function], ... }

isUpperCase changeCase.isUpper(string)

Return a boolean indicating whether the string is upper cased.

changeCase.isUpperCase('test string');
//=> false

isLowerCase changeCase.isLower(string)

Return a boolean indicating whether the string is lower cased.

changeCase.isLowerCase('test string');
//=> true

upperCase changeCase.upper(string)

Return the string in upper case.

changeCase.upperCase('test string');
//=> "TEST STRING"

upperCaseFirst changeCase.ucFirst(string)

Return the string with the first character upper cased.

changeCase.upperCaseFirst('test');
//=> "Test"

lowerCase changeCase.lower(string)

Return the string in lower case.

changeCase.lowerCase('TEST STRING');
//=> "test string"

sentenceCase changeCase.sentence(string)

Return as a lower case, space separated string.

changeCase.sentenceCase('testString');
//=> "test string"

titleCase changeCase.title(string)

Return as a space separated string with the first character of every word upper cased.

changeCase.titleCase('a simple test');
//=> "A Simple Test"

camelCase changeCase.camel(string)

Return as a string with the separators denoted by having the next letter capitalized.

changeCase.camelCase('test string');
//=> "testString"

pascalCase changeCase.pascal(string)

Return as a string denoted in the same fashion as camelCase, but with the first letter also capitalized.

changeCase.pascalCase('test string');
//=> "TestString"

snakeCase changeCase.snake(string)

Return as a lower case, underscore separated string.

changeCase.snakeCase('test string');
--> "test_string"

paramCase changeCase.param(string)

Return as a lower case, dash separated string.

changeCase.paramCase('test string');
//=> "test-case"

dotCase changeCase.dot(string)

Return as a lower case, period separated string.

changeCase.dotCase('test string');
//=> "test.string"

pathCase changeCase.path(string)

Return as a lower case, slash separated string.

changeCase.pathCase('test string');
//=> "test/string"

constantCase changeCase.constant(string)

Return as an upper case, underscore separated string.

changeCase.constantCase('test string');
//=> "TEST_STRING"

swapCase changeCase.swap(string)

Return as a string with every character case reversed.

changeCase.swapCase('Test String');
//=> "tEST sTRING"

License

MIT