Function d3_time_scaleFormat

d3-3.2.8/d3.js:8715–8721

(formats)

    return new Date(t);
  }
  function d3_time_scaleFormat(formats) {
    return function(date) {
      var i = formats.length - 1, f = formats[i];
      while (!f[1](date)) f = formats[--i];
      return f[0](date);
    };
  }
  function d3_time_scaleSetYear(y) {
    var d = new Date(y, 0, 1);
    d.setFullYear(y);