let versions = ["1.45.0", "1.5", "6", "2.3.4.5"];
versions = versions.sort((a, b) => {
let arr1 = a.split('.');
let arr2 = b.split('.');
let i = 0;
while (true) {
let s1 = arr1[i];
let s2 = arr2[i];
i++;
if (s1 == undefined || s2 == undefined) {
return arr1.length - arr2.length;
}
if (s1 == s2) {
continue;
}
return s1 - s2;
}
})
console.log(versions); //[ '1.5', '1.45.0', '2.3.4.5', '6' ]