JSFiddle - React, Tailwind, and code Playground

by mischah

JavaScript

function formatDate(germanDate) {
    var regExp = /^(0[1-9]|[12]\d|3[01])\.(0[1-9]|1[012])\.((19|20)\d{2})$/;   
    var englishDate = germanDate.replace(regExp, "$2/$1/$3");
    
    return englishDate;
};

console.log(formatDate('31.12.2047'));