Format a javascript date as a string, based on a format string

dateFormat

/**
* Format date as a string
* @param Date date a date object (usually "new Date();")
* @param string format a string format, eg. "DD-MM-YYYY"
*/
function dateFormat(date, format) {
    // Calculate date parts and replace instances in format string accordingly
    // Hint: Months are zero-based
    
    // Date
    format = format.replace("DD", leadingZeroInt(date.getDate()));
    format = format.replace("D", date.getDate());
    format = format.replace("MM", leadingZeroInt(date.getMonth() + 1));
    format = format.replace("M", (date.getMonth() + 1));
    format = format.replace("YYYY", date.getFullYear());
    
    // Time
    format = format.replace("hh", leadingZeroInt(date.getHours()));
    format = format.replace("h", date.getHours());
    format = format.replace("mm", leadingZeroInt(date.getMinutes()));
    format = format.replace("m", date.getMinutes());
    format = format.replace("ss", leadingZeroInt(date.getSeconds()));
    format = format.replace("s", date.getSeconds());

    // Return value
    return (format.indexOf("NaN") != -1) ? date : format;
}