D3 Examples - New Jersey Populations

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Adding Tooltips</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                background-color: white;
            }
​
            svg {
                background-color: #aaaaaa;
            }
            svg2 {
                background-color: blue;
            }
        </style>
    </head>
    <body>
​
        <script type="text/javascript">     
​
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", 700)
                        .attr("height", 500);
                
            d3.csv("New Jersey Crime.csv", function(data) {
​
                data.sort(function(a, b) {
                    return d3.descending(+a.Population, +b.Population)||d3.ascending(+a.Year, +b.Year);
                    })
​
                var rects = svg.selectAll("rect")
                                .data(data)
                                .enter()
                                .append("rect")
                                .attr("fill", function(d) {
                                    if (d.Year < 2013) {return "#179BD7"}
                                    else {return "#005191"}
                                    ;});
                                //.attr("fill", "#005191");
​
                rects.attr("x", 0)
                    .attr("y", function(d, i) {
                        return i * 20;
                    })
                    .attr("width", function(d) {
                        return d.Population / 500;
                    })
                    .attr("height", 18)
                    .append("title")
                    .text(function(d) {
                        return d.City + "'s Population is " + d.Population.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, "$1,") + " in " + d.Year;
                    })
                    ;
                                    
                length = d3.selectAll("rect")[0].length
                
                svg.attr("height", length*20)
​
                var texts = svg.selectAll("text")
                                .data(data)
                                .enter()
                                .append("text")
                                .attr("fill", "white")
                                .attr("font-size", "11px")
                                .attr("font-family", "sans-serif");
​
                texts.attr("x", 0)
                    .attr("y", function(d, i) {
                        return i * 20 + 13;
                    })
                    .text(function(d) {
                        return d.City; //+ " - " + d.Year;
                    });
                
                svg.append("rect")
                .attr("x", 400)
                .attr("y", 100)
                .attr("height", 20)
                .attr("width", 200)
                .attr("fill", "#005191");
                svg.append("rect")
                .attr("x", 400)
                .attr("y", 120)
                .attr("height", 20)
                .attr("width", 200)
                .attr("fill", "#179BD7");
                svg.append("text")
                .attr("x", 410)
                .attr("y", 114)
                .attr("fill", "white")
                .attr("font-family", "sans-serif")
                .attr("font-size", "12px")
                .text("Population in 2013");
                svg.append("text")
                .attr("x", 410)
                .attr("y", 134)
                .attr("fill", "white")
                .attr("font-family", "sans-serif")
                .attr("font-size", "12px")
                .text("Population in 2000");
            });
        </script>
​
    </body>
</html>
    