// via css

p::first-letter {

    text-transform:capitalize;

}

​

// via function

function capitalizeString(string)

{

    return string && string[0].toUpperCase() + string.slice(1);

}

​

capitalizeString('hello world') // return Hello world

​

// ES6

const capitalize = s => s ? s[0].toUpperCase() + s.slice(1) : ""

​

//capitalize only the first letter of the string. 

function capitalizeFirstLetter(string) {

    return string.charAt(0).toUpperCase() + string.slice(1);

}

//capitalize all words of a string. 

function capitalizeWords(string) {

    return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });

};

export const toCapitalize = (str) => {

  return str.charAt(0).toUpperCase() + str.slice(1);

};

​

​

const capitalize = str => str.charAt(0).toUpperCase() + str.slice(1)

​

capitalize("follow for more")

// Result: Follow for more

​

function capitalizeName(name) {

  return name.replace(/\b(\w)/g, s => s.toUpperCase());

}

​

​

const capitalize = s => s && s[0].toUpperCase() + s.slice(1)

​

// to always return type string event when s may be falsy other than empty-string

const capitalize = s => (s && s[0].toUpperCase() + s.slice(1)) || ""

const Capitalize = function(string){

  return string[0].toUpperCase + string.slice(1).toLowerCase;

}

myString = 'the quick green alligator...';

myString.replace(/^\w/, (c) => c.toUpperCase());

​

myString = '    the quick green alligator...';

myString.trim().replace(/^\w/, (c) => c.toUpperCase());

function capitalizeName(name) {

    let nameObject = convertNameToObject(name);

    let firstName = nameObject.firstName;

    let lastName = nameObject.lastName;

​

    return firstName[0].toUpperCase() + firstName.substring(1, firstName.length).toLowerCase() + " " + lastName[0].toUpperCase() + lastName.substring(1, lastName.length).toLowerCase()