Magnetiq

Here’s a concise implementation for parsing UTC date strings in ISO 8601 format into Date objects in the local time zone.

function parseIsoDate(s) {
    var tokens = /(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)\.(\d+)/
        .exec(s).slice(1);
    tokens[1] -= 1;
    return new Date(Date.UTC.apply(null, tokens));
}

The new Date(Date.UTC.apply(null, tokens)) trick allows the direct usage of an array of date components for the construction of a new Date instance.