line chart with ChartJS

HTML

<script src="http://www.chartjs.org/assets/Chart.min.js"></script>
<canvas id="myChart" width="800" height="400"></canvas>

JavaScript

Chart.types.Line.extend({
  name: "LineAlt",
  initialize: function() {
    Chart.types.Line.prototype.initialize.apply(this, arguments);

    var scale = this.scale;
    var originalCalculateXLabelRotation = scale.calculateXLabelRotation;
    var originalXScalePaddingLeft = scale.xScalePaddingLeft;
    scale.calculateXLabelRotation = function() {
      var originalCalculateX = scale.calculateX;
      scale.calculateX = function() {
        return 0;
      }
      originalCalculateXLabelRotation.apply(this, arguments);
      scale.xScalePaddingLeft = originalXScalePaddingLeft;
      scale.calculateX = originalCalculateX;
    }
    this.scale.fit();
  }
});

var data = {
  labels: ["January", "February", "March", "April", "May", "June", "July"],
  datasets: [{
    label: "My First dataset",
    fillColor: "rgba(220,220,220,0.2)",
    strokeColor: "rgba(220,220,220,1)",
    pointColor: "rgba(220,220,220,1)",
    pointStrokeColor: "#fff",
    pointHighlightFill: "#fff",
    pointHighlightStroke: "rgba(220,220,220,1)",
    data: [65, 59, 80, 81, 56, 55, 40]
  }, {
    label: "My Second dataset",
    fillColor: "rgba(151,187,205,0.2)",
    strokeColor: "rgba(151,187,205,1)",
    pointColor: "rgba(151,187,205,1)",
    pointStrokeColor: "#fff",
    pointHighlightFill: "#fff",
    pointHighlightStroke: "rgba(151,187,205,1)",
    data: [28, 48, 40, 19, 86, 27, 90]
  }]
};

var ctx = document.getElementById("myChart").getContext("2d");
new Chart(ctx).LineAlt(data);