How to create a new Date() in Javascript from a non-standard date format

Question

I have a date in this format: dd.mm.yyyy

When I instantiate a JavaScript date with it, it gives me a NaN

In c# I can specify a date format, to s

Answer 1

Modified version of the accepted answer which supports value and format without 'dd' and uppercase format

function parseDate(input, format) {
    format = (format || 'yyyy-mm-dd').toLowerCase(); // default format
    var parts = input.match(/(\d+)/g), 
    i = 0, fmt = {};
    // extract date-part indexes from the format
    format.replace(/(yyyy|dd|mm)/g, function(part) { fmt[part] = i++; });
    return new Date([parts[fmt['yyyy']], parts[fmt['mm']], parts[fmt['dd']]].filter(x => x !== undefined).join('-'));
}

parseDate('10/2018', 'MM/YYYY')