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function isHour(sHour){
var sSeparator = ':';
var withSeconds = false;
if(sHour.match("^[0-9]{2}:[0-9]{2}:[0-9]{2}$")) var withSeconds = true;
else if(!sHour.match("^[0-9]{2}:[0-9]{2}$")) return false;
var arHour = sHour.split(sSeparator);
var iHour = parseInt(arHour[0], 10);
var iMinute = parseInt(arHour[1], 10);
if(withSeconds) var iSecs = parseInt(arHour[2], 10);
else var iSecs = 0;
return (iHour >= 0 && iHour < 24) && (iMinute >= 0 && iMinute < 60) && (iSecs >= 0 && iSecs < 60);
} |