Draw barcode using d3.

draw_barcode.js

//= require d3

var height = 500;
var width = 800;
var margin_left = 20;
var xdim = 2;

var svgContianer = d3.select("body")
    .append("svg")
    .attr("width", width)
    .attr("height", height)

// data for 123456789012345
var data = [
    [0, 2], [3, 1], [6, 3], [11, 1], [13, 2], [17, 3], [22, 1], [26, 1], [28, 2], [33, 3], [39, 1], [41, 2], [44, 2], [50, 1], [52, 1], [55, 2], [58, 4], [63, 2], [66, 1], [68, 2], [72, 3], [77, 1], [81, 1], [83, 2], [88, 1], [90, 4], [95, 3], [99, 2], [102, 3], [107, 1], [110, 1], [112, 3], [116, 2], [121, 2], [126, 3], [130, 1], [132, 2]
];

var line = svgContianer.selectAll("line")
    .data(data)
    .enter()
    .append("rect")
    .attr("x", function (d, i) {
        return margin_left + d[0] * xdim;
    })
    .attr("width", function (d, i) {
        return d[1] * xdim;
    })
    .attr("y", 0)
    .attr("height", 80)