javascript format date from dd/mm/yyyy code example

Example 1: javascript format date yyyy-mm-dd

let today = new Date()
today.toISOString().split('T')[0]

Example 2: javascript date format dd-mm-yyyy

var date_format = new Date();
    document.write(innerHTML = date_format.getMonth()+'-'+ date_format.getDate()+'-'+date_format.getFullYear());