1 var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");

     2 

     3 d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;

     4 

     5 function d3_time_formatIsoNative(date) {

     6   return date.toISOString();

     7 }

     8 

     9 d3_time_formatIsoNative.parse = function(string) {

    10   return new Date(string);

    11 };

    12 

    13 d3_time_formatIsoNative.toString = d3_time_formatIso.toString;