How to validate with Javascript an Input text with Hours and Minutes

Question

I have to build an HTML Form with an Input text field for Hours and Minutes.
Something like:

Name : [Foo]
Surname

Answer 1

might not be the best but this works for me. i am returning false if there is no error in this case. checks for both format and values.

if (value.substr(2,1) === ':') {
    if (!value.match(/^\d\d:\d\d/)) {
        return "Invalid Format";
    }
    else if (parseInt(value.substr(0,2)) >= 24 || parseInt(value.substr(3,2)) >= 60)  {
        return "Invalid Format";
    }
    else {
        return false;
    }

}
else {
    return "Invalid Format";
}