UPDATE

Arguments of toLocaleString method can also configure the format of the
dates. This is supported in modern browser versions, you can see more
information here.

let date = new Date(Date.UTC(2015, 5, 27, 12, 0, 0))

, options = {weekday: 'short', month: 'short', day: 'numeric' };

console.log(date.toLocaleString('es-ES', options)); //sáb. 27 de jun.

In JavaScript there are methods to create dates, but no native code to format. You can read about Date(). But there are libraries that do. Particularly for me the best library to use it deeply is MomentJS. So you can do something like as: moment().format('dd, d of MMMM')

However, if you do not want to use a library you have access to the following native Date properties:

var now = new Date();



document.write(now.toUTCString() + <br>)

document.write(now.toTimeString() + <br>)

Date Object some properties

toDateString()  Converts the date portion of a Date object into a readable string

toGMTString()   Deprecated. Use the toUTCString() method instead

toISOString()   Returns the date as a string, using the ISO standard

toJSON()    Returns the date as a string, formatted as a JSON date

toLocaleDateString()    Returns the date portion of a Date object as a string, using locale conventions

toLocaleTimeString()    Returns the time portion of a Date object as a string, using locale conventions

toLocaleString()    Converts a Date object to a string, using locale conventions

toString()  Converts a Date object to a string

toTimeString()  Converts the time portion of a Date object to a string

toUTCString() Converts a Date object to a string, according to universal time