Question

Here is an example in Javascript which works well on Android but does not work for iOS. I don’t know why?

showTime = function(timeId, time_incoming) {
    var curTime = new Date();
    var time_in = new Date(time_incoming);
    var curTimeStr = curTime.format('yy/mm/dd');
    var inTimeStr = time_in.format('yy/mm/dd');
    if (curTimeStr === inTimeStr)
    {
       $("#" + timeId).text(curTimeStr);
    }
    else
    {
        $("#" + timeId).text(inTimeStr);
    }
}

Answer 1

The Date object in JavaScript has no format function.

Separately, re this line:

var time_in = new Date(time_incoming);

You haven’t said what time_incoming is, but if it’s a string, you need to be sure it’s a string in a format that is actually supported. A lot of browsers add to the formats that are supported, but you can’t rely on it. The only string format that’s officially supported is a simplified form of ISO 8601, but that’s relatively new (only specified a couple of years ago) and not present in older browsers. All desktop browsers also support yyyy/mm/dd (with slashes, not dashes), even though that’s not specified. So if time_incoming is a string, you may need to parse it yourself.