JS -Nummer vor Null hinzufügen
('0' + 11).slice(-2) // '11'
('0' + 4).slice(-2) // '04'
GutoTrosla
('0' + 11).slice(-2) // '11'
('0' + 4).slice(-2) // '04'const str1 = '5';
console.log(str1.padStart(2, '0')); // expected output: "05"function checkTime(i) {
if (i<10) {i = "0" + i}; // add zero in front of numbers < 10
return i;
}