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by tjjjohnson

HTML

<script src="https://raw.github.com/mbostock/d3/af2af6ac9080529d102aacfa57807371fd983d2b/d3.v2.js"></script>

CSS

path {
    stroke: black;
    fill: none;
}

JavaScript

var data = [3, 66, 2, 76, 5, 20, 1, 3, 8, 9, 2, 5, 7];

var w = 20,
    h = 80;

var x = d3.scale.linear()
    .domain([0, 1])
    .range([0, w]);
var y = d3.scale.linear()
    .domain([0, 100])
    .rangeRound([h, 0]);

var chart = d3.select("body").append("svg")
    .attr("class", "chart")
    .attr("width", w * data.length -1)
    .attr("height", h);

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

chart.append("svg:path").attr("d", line(data));