How to use JSON.parse reviver parameter to parse date string

Question

My JSON string contains a date field that returns such a value:

\"2009-04-04T22:55:16.0000000-04:00\"

I am particularly interested in parsi

Answer 1

The use of return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4], +a[5], +a[6]));

does not adjust the date for the timezone information, the -4:00 in the example.

An alternative is to let Date() do the parsing for you:

var dateReviver = function (key, value) {
    var a;
    if (typeof value === 'string') {
        a = Date.parse(value);
        if (a) {
            return new Date(a);
        }    
    }
    return value;
}

If the JSON had been formatted with JSON.stringify() it would have been in UTC (Z).