Date Ticks by mbostock

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.axis text {
  font: 10px sans-serif;
}

.axis line,
.axis path {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var duration = 2500,
    delay = 500;

var width = 960,
    height = 500;

var x = d3.time.scale()
    .domain([new Date(2010, 0, 2), new Date(2010, 1, 1)])
    .range([0, width]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .tickSize(6, 0)
    .tickFormat(d3.time.format("%m/%d"));

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var g = svg.append("g")
    .attr("class", "axis")
    .attr("transform", "translate(0," + height / 2 + ")")
    .call(xAxis);

setInterval(update, duration + delay);

function update() {
  x.domain([new Date(2010, 0, 2), new Date(2010, 0, Math.floor(Math.random() * 21) + 10)]);

  g.transition()
      .duration(duration)
      .call(xAxis);
}

</script>