CaseValidation

isAlpha

Checks if a string contains only alphabetic characters (A-Z, a-z).

Parameter: string

• The string to check.

Returns: boolean

• True if only alphabetic characters, false otherwise.

Definition

function isAlpha(str: string): boolean

Examples

isAlpha('HelloWorld') // true
isAlpha('Hello123') // false

isAlphaNumeric

Checks if a string contains only alphanumeric characters (A-Z, a-z, 0-9).

Parameter: string

• The string to check.

Returns: boolean

• True if only alphanumeric characters, false otherwise.

Definition

function isAlphaNumeric(str: string): boolean

Examples

isAlphaNumeric('Hello01') // true
isAlphaNumeric('1234567890') // false

isSnakeCase

Checks if a string is in snake_case format.

Parameters

• str1: string - The string to be checked.
• alphanumeric: boolean - If true, allows numbers in the string.

Returns: boolean

• True if the string is in snake_case format, false otherwise.

Conventions

• Use lowercase letters.
• Separate words with underscores (_).
• No numbers allowed, unless specified otherwise.

Definition

function isSnakeCase(str: string, alphanumeric = false): boolean

Examples

// Valid
isSnakeCase('snake_case_example') // true
isSnakeCase('hello_world') // true

// Valid with alphanumeric flag
isSnakeCase('with_1234', true) // true
isSnakeCase('pi_3_14', true) // true

// Invalid
isSnakeCase('123at_start') // false
isSnakeCase(' no_space_allowed') // false
isSnakeCase('no_CAPS') // false

isKebabCase

Checks if a string is in kebab-case format.

Parameters

• str1: string - The string to be checked.
• alphanumeric: boolean - If true, allows numbers in the string.

Returns: boolean

• True if the string is in kebab-case format, false otherwise.

Conventions

• Use lowercase letters.
• Separate words with hyphens (-).
• No numbers allowed, unless specified otherwise.

Definition

function isKebabCase(str: string, alphanumeric = false): boolean

Examples

// Valid
isKebabCase('kebab-case-example') // true
isKebabCase('hello-world') // true

// Valid with alphanumeric flag
isKebabCase('with-1234', true) // true
isKebabCase('pi-3-14', true) // true

// Invalid
isKebabCase('123at-start') // false
isKebabCase(' no-space-allowed') // false
isKebabCase('no-CAPS') // false

isCamelCase

Checks if a string is in camelCase format.

Parameters: string

• The string to be checked.

Returns: boolean

• True if the string is in camelCase format, false otherwise.

Conventions

• Start with a lowercase letter.
• Use uppercase for each new word.
• Should consist of only letters.
• No separator between words allowed.
• No numbers allowed.

Definition

function isCamelCase(str: string): boolean

Examples

// Valid
isCamelCase('camelCaseExample') // true
isCamelCase('helloWorld') // true

// Invalid
isCamelCase('CAMEL') // false
isCamelCase(' noSpaceAllowed') // false
isCamelCase('withThe1234') // false

isPascalCase

Checks if a string is in PascalCase format.

Parameters: string

• The string to be checked.

Returns: boolean

• True if the string is in PascalCase format, false otherwise.

Conventions

• Start with an uppercase letter.
• Use uppercase for each new word.
• Should consist of only letters.
• No separator between words allowed.
• No numbers allowed.

Definition

function isPascalCase(str: string): boolean

Examples

// Valid
isPascalCase('PascalCaseExample') // true
isPascalCase('HelloWorld') // true

// Invalid
isPascalCase('PASCAL') // false
isPascalCase(' NoSpaceAllowed') // false
isPascalCase('WithThe1234') // false