D3 Examples - d3.js simple bar chart example

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<!DOCTYPE html>
<html>
    <head>
        <title>6</title>
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">    
        <script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
        <script src="loadData.js"></script>
        <style>
            rect:hover {fill:orange;}
        </style>
    </head>
    <body>
        <h1>load external csv data</h1>
​
        <script>
        (function() {
          var svg = d3.select("body")
            .append("svg")
            .attr("width", 1300)
            .attr("height", 400)
            .style("background","gray");
​
            d3.csv("grades-data.csv", function(dataset) {
                console.log(dataset);
                dataset.sort(function(a, b) {
                    return d3.descending(a.finalGrade, b.finalGrade);
                });
​
                var rects = svg.selectAll("rect")
                                .data(dataset)
                                .enter()
                                .append("rect");
​
                rects.attr("x", 0)
                .attr("y", function(d, i) {
                    return i*11;
                })
                .attr("width",function(d) {
                    return d.finalGrade;
                })
                .attr("height",10)
                .attr("data-name", function(d) {
                    return d.firstName;
                })
                .append("title")
                .text(function(d) {
                    return d.finalGrade;
                })
            });;
        })();
        </script>
        
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> </body>
</html> 
    