Question

I have strings with version numbers like:

"1.4.2.57"
"8.4.3"
"3.12.0.25"

I only need the first 3 numbers, I was going to use substr, but if the numbers are > 9 the substr will fail.

How can I extract x.x.x from strings like (x.x – x.x.x – x.x.x.x) where x is = [0-99]

Answer 1

var t = [
    "1.4.2.57",
    "8.4.3",
    "3.12.0.25"
    ];
for (var v = 0; v < t.length; v++){
    var ver = t[v].split('.');
    alert(ver.slice(0,3).join('.'));
}

Split by ., then slice to get only first 3 digits (in this case elements, since they were split to an array), then rejoin with . again.