upperFirst

string

Converts the first character of string to upper case.

Installation

Import

import { upperFirst } from '@tulx/utils';

Source Code

Implementation

/**
 * Converts the first character of string to upper case.
 *
 * @param string - The string to convert.
 * @returns Returns the converted string.
 *
 * @example
 * ```ts
 * upperFirst('fred'); // 'Fred'
 * upperFirst('FRED'); // 'FRED'
 * ```
 */
export function upperFirst(string: string): string {
  if (string.length === 0) {
    return string;
  }
  return string.charAt(0).toUpperCase() + string.slice(1);
}

Example

import { upperFirst } from '@tulx/utils';

upperFirst('fred'); // 'Fred'
upperFirst('FRED'); // 'FRED'

Related Functions

camelCase

Converts string to camel case.

capitalize

Converts the first character of string to upper case and the remaining to lower case.

deburr

Deburrs string by converting Latin-1 Supplement and Latin Extended-A letters to basic Latin letters and removing combining diacritical marks.

endsWith

Checks if string ends with the given target string.

escape

Converts the characters "&", "<", ">", '"', and "'" in string to their corresponding HTML entities.

escapeRegExp

Escapes the RegExp special characters "^", "$", "\", ".", "*", "+", "?", "(", ")", "[", "]", "{", "}", and "|" in string.