Line with area highlight (https://vida.io/documents/TzcZJX4itBebKciQZ)

vida.css

.line {
  fill: none;
  stroke: #4682b4;
  stroke-width: 1.5px;
}

.area {
  fill: #EDE624;
}

vida.csv

vida.html

<!-- IMPORTANT GUIDELINES
1. div #canvas wraps this html block. 
2. div #canvas-svg is used for svg rendering. It can be placed anywhere here.
3. Do not define an html page here, i.e. including html, head, body tags. -->

<div id="canvas-svg"></div>

vida.js

var WIDTH = 800, HEIGHT = 450;
var Y_AXIS_LABEL = "Price ($)";

var X_DATA_PARSE = d3.time.format("%d-%b-%y").parse;

var Y_DATA_PARSE = vida.number;

var X_AXIS_COLUMN = "date";

var Y_AXIS_COLUMN = "close";

var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = WIDTH - margin.left - margin.right,
    height = HEIGHT - margin.top - margin.bottom;

var x = d3.time.scale()
    .range([0, width]);

var y = d3.scale.linear()
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

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

var area = d3.svg.area()
    .interpolate("basis")
    .x(function(d) { return x(d.x_axis); })
    .y0(height)
    .y1(function(d) { return y(y.domain()[1]); });

var line = d3.svg.line()
    .x(function(d) { return x(d.x_axis); })
    .y(function(d) { return y(d.y_axis); });

var svg = d3.select("#canvas-svg").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 drawD3Document = function(data) {
  var area_data = [];
    
  data.forEach(function(d) {
    d.x_axis = X_DATA_PARSE(d[X_AXIS_COLUMN]);
    d.y_axis = Y_DATA_PARSE(d[Y_AXIS_COLUMN]);
    
    var x_date = (new Date(d.x_axis)).getTime();
    if (x_date > (new Date('2012-04-13')).getTime() &&
        x_date < (new Date('2012-04-17')).getTime()) {
        area_data.push(d);
    }
  });

  x.domain(d3.extent(data, function(d) { return d.x_axis; }));
  y.domain(d3.extent(data, function(d) { return d.y_axis; }));

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text(Y_AXIS_LABEL);

  svg.append("path")
      .datum(area_data)
      .attr("class", "area")
      .attr("d", area);

  svg.append("path")
      .datum(data)
      .attr("class", "line")
      .attr("d", line);
};