D3 graphs

Simple D3 graph.

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
  <link rel="stylesheet" href="style.css">
  </head>

<body>
    <script>
      // Set the dimensions of the canvas / graph
    var margin = {top: 30, right: 30, bottom: 40, left: 50};
    var width = 800 - margin.left - margin.right;
    var height = 300 - margin.top - margin.bottom;

// Set the ranges
    var x = d3.time.scale().range([0, width]);
    var y = d3.scale.linear().range([height, 0]);

// Define the axes
    var xAxis = d3.svg.axis().scale(x)
        .orient("bottom").ticks(5);

var yAxis = d3.svg.axis().scale(y)
        .orient("left").ticks(5);

// Adds the svg canvas
    var svgContainer = d3.select("body")
        .append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
        .append("g")
            .attr("transform", 
                  "translate(" + margin.left + "," + margin.top + ")");

var data = [
                {"date":"1-Apr-15", "close":140.61},
                {"date":"15-Apr-15", "close":20.23},
                {"date":"13-May-15", "close":99.00},
                {"date":"21-May-15", "close":188.13},
                {"date":"18-Jun-15", "close":59.13},
                {"date":"28-Jul-15", "close":75.13},
                {"date":"8-Aug-15", "close":109.13},
                {"date":"12-Aug-15", "close":96.13}];

// Parse the date / time
    var parseDate = d3.time.format("%d-%b-%y").parse;

// Get the data
    data.forEach(function(d) {
        d.date = parseDate(d.date);
        d.close = +d.close;
    });

// Scale the range of the data
    x.domain(d3.extent(data, function(d) { return d.date; }));
    y.domain([0, d3.max(data, function(d) { return d.close; })]);

// Add the X Axis
    svgContainer.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

// Add the Y Axis
    svgContainer.append("g")
        .attr("class", "y axis")
        .call(yAxis);

// Draw vertical grid lines
    svgContainer.append("g")     
        .attr("class", "grid")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis
            .tickSize(-height, 0, 0)
            .tickFormat("")
            )

// Draw horizontal grid lines
    svgContainer.append("g")     
        .attr("class", "grid")
        .call(yAxis
            .tickSize(-width, 0, 0)
            .tickFormat("")
            )

svgContainer.selectAll("bar")
        .data(data)
        .enter().append("rect")
        .style("fill", "#aec6a8")
        .attr("x", function(d) { return x(d.date)-5; })
        .attr("width", 10)
        .attr("y", function(d) { return y(d.close); })
        .attr("height", function(d) { return height - y(d.close); });
      
    // Define the line (interpolate to smooth the line)
    var valueline = d3.svg.line()
        .interpolate("cardinal")
        .x(function(d) { return x(d.date); })
        .y(function(d) { return y(d.close); });

svgContainer.append("path")
        .attr("class", "line")
        .attr("d", valueline(data));

</script>
</body>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js