Bar Charts in JavaScript

How to make a D3.js-based bar chart in javascript. Seven examples of grouped, stacked, overlaid, and colored bar charts.

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Plotly is a free and open-source graphing library for JavaScript. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

Basic Bar Chart

var data = [
  {
    x: ['giraffes', 'orangutans', 'monkeys'],
    y: [20, 14, 23],
    type: 'bar'
  }
];

Plotly.newPlot('myDiv', data);

Grouped Bar Chart

var trace1 = {
  x: ['giraffes', 'orangutans', 'monkeys'],
  y: [20, 14, 23],
  name: 'SF Zoo',
  type: 'bar'
};

var trace2 = {
  x: ['giraffes', 'orangutans', 'monkeys'],
  y: [12, 18, 29],
  name: 'LA Zoo',
  type: 'bar'
};

var data = [trace1, trace2];

var layout = {barmode: 'group'};

Plotly.newPlot('myDiv', data, layout);

Stacked Bar Chart

var trace1 = {
  x: ['giraffes', 'orangutans', 'monkeys'],
  y: [20, 14, 23],
  name: 'SF Zoo',
  type: 'bar'
};

var trace2 = {
  x: ['giraffes', 'orangutans', 'monkeys'],
  y: [12, 18, 29],
  name: 'LA Zoo',
  type: 'bar'
};

var data = [trace1, trace2];

var layout = {barmode: 'stack'};

Plotly.newPlot('myDiv', data, layout);

Bar Chart with Hover Text

var trace1 = {
  x: ['Liam', 'Sophie', 'Jacob', 'Mia', 'William', 'Olivia'],
  y: [8.0, 8.0, 12.0, 12.0, 13.0, 20.0],
  type: 'bar',
  text: ['4.17 below the mean', '4.17 below the mean', '0.17 below the mean', '0.17 below the mean', '0.83 above the mean', '7.83 above the mean'],
  marker: {
    color: 'rgb(142,124,195)'
  }
};

var data = [trace1];

var layout = {
  title: {
    text: 'Number of Graphs Made this Week'
  },
  font:{
    family: 'Raleway, sans-serif'
  },
  showlegend: false,
  xaxis: {
    tickangle: -45
  },
  yaxis: {
    zeroline: false,
    gridwidth: 2
  },
  bargap :0.05
};

Plotly.newPlot('myDiv', data, layout);

Bar Chart with Direct Labels

var xValue = ['Product A', 'Product B', 'Product C'];

var yValue = [20, 14, 23];

var trace1 = {
  x: xValue,
  y: yValue,
  type: 'bar',
  text: yValue.map(String),
  textposition: 'auto',
  hoverinfo: 'none',
  marker: {
    color: 'rgb(158,202,225)',
    opacity: 0.6,
    line: {
      color: 'rgb(8,48,107)',
      width: 1.5
    }
  }
};

var data = [trace1];

var layout = {
  title: {
    text: 'January 2013 Sales Report'
  },
  barmode: 'stack'
};

Plotly.newPlot('myDiv', data, layout);

Grouped Bar Chart with Direct Labels

var xValue = ['Product A', 'Product B', 'Product C'];

var yValue = [20, 14, 23];
var yValue2 = [24, 16, 20];

var trace1 = {
  x: xValue,
  y: yValue,
  type: 'bar',
  text: yValue.map(String),
  textposition: 'auto',
  hoverinfo: 'none',
  opacity: 0.5,
  marker: {
    color: 'rgb(158,202,225)',
    line: {
      color: 'rgb(8,48,107)',
      width: 1.5
    }
  }
};

var trace2 = {
  x: xValue,
  y: yValue2,
  type: 'bar',
  text: yValue2.map(String),
  textposition: 'auto',
  hoverinfo: 'none',
  marker: {
    color: 'rgba(58,200,225,.5)',
    line: {
      color: 'rgb(8,48,107)',
      width: 1.5
    }
  }
};

var data = [trace1,trace2];

var layout = {
  title: {
    text: 'January 2013 Sales Report'
  }
};

Plotly.newPlot('myDiv', data, layout);

Bar Chart with Rotated Labels

var trace1 = {
  x: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
  y: [20, 14, 25, 16, 18, 22, 19, 15, 12, 16, 14, 17],
  type: 'bar',
  name: 'Primary Product',
  marker: {
    color: 'rgb(49,130,189)',
    opacity: 0.7,
  }
};

var trace2 = {
  x: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
  y: [19, 14, 22, 14, 16, 19, 15, 14, 10, 12, 12, 16],
  type: 'bar',
  name: 'Secondary Product',
  marker: {
    color: 'rgb(204,204,204)',
    opacity: 0.5
  }
};

var data = [trace1, trace2];

var layout = {
  title: {
    text: '2013 Sales Report'
  },
  xaxis: {
    tickangle: -45
  },
  barmode: 'group'
};

Plotly.newPlot('myDiv', data, layout);

Customizing Individual Bar Colors

var trace1 = {
  x: ['Feature A', 'Feature B', 'Feature C', 'Feature D', 'Feature E'],
  y: [20, 14, 23, 25, 22],
  marker:{
    color: ['rgba(204,204,204,1)', 'rgba(222,45,38,0.8)', 'rgba(204,204,204,1)', 'rgba(204,204,204,1)', 'rgba(204,204,204,1)']
  },
  type: 'bar'
};

var data = [trace1];

var layout = {
  title: {
    text: 'Least Used Feature'
  }
};

Plotly.newPlot('myDiv', data, layout);

Customizing Individual Bar Widths

var trace0 = {
  type: 'bar',
  x: [1, 2, 3, 5.5, 10],
  y: [10, 8, 6, 4, 2],
  width: [0.8, 0.8, 0.8, 3.5, 4]
}

var data = [trace0]

Plotly.newPlot('myDiv', data);

Customizing Individual Bar Base

var data = [
  {
    type: 'bar',
    x: ['2016','2017','2018'],
    y: [500,600,700],
    base: [-500,-600,-700],
    hovertemplate: '%{base}',
    marker: {
      color: 'red'
    },
    name: 'expenses'
  },
  {
    type: 'bar',
    x: ['2016','2017','2018'],
    y: [300,400,700],
    base: 0,
    marker: {
      color: 'blue'
    },
    name: 'revenue'
  }]

Plotly.newPlot('myDiv', data);

Rounded Corners on Bars

To create rounded corners on bars, set barcornerradius on the layout to a number of pixels, or a string with a percentage of the bar width, for example, 25%. You can also configure traces individually with marker.cornerradius on the trace.

var trace1 = {
  x: ['South Korea', 'China', 'Canada'],
  y: [24, 10, 9],
  name: 'Gold',
  type: 'bar',
};

var trace2 = {
  x: ['South Korea', 'China', 'Canada'],
  y: [13, 15, 12],
  name: 'Silver',
  type: 'bar',
};

var trace3 = {
  x: ['South Korea', 'China', 'Canada'],
  y: [11, 8, 12],
  name: 'Bronze',
  type: 'bar',
};

var data = [trace1, trace2, trace3];

var layout = {
  scattermode: 'group',
  title: {
    text: 'Grouped by Country'
  },
  xaxis: {
    title: {
      text: 'Country'
    }
  },
  yaxis: {
    title: {
      text: 'Medals'
    }
  },
  barcornerradius: 15,
};

Plotly.newPlot('myDiv', data, layout);

Colored and Styled Bar Chart

var trace1 = {
  x: [1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012],
  y: [219, 146, 112, 127, 124, 180, 236, 207, 236, 263, 350, 430, 474, 526, 488, 537, 500, 439],
  name: 'Rest of world',
  marker: {color: 'rgb(55, 83, 109)'},
  type: 'bar'
};

var trace2 = {
  x: [1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012],
  y: [16, 13, 10, 11, 28, 37, 43, 55, 56, 88, 105, 156, 270, 299, 340, 403, 549, 499],
  name: 'China',
  marker: {color: 'rgb(26, 118, 255)'},
  type: 'bar'
};

var data = [trace1, trace2];

var layout = {
  title: {
    text: 'US Export of Plastic Scrap'
  },
  xaxis: {tickfont: {
      size: 14,
      color: 'rgb(107, 107, 107)'
    }},
  yaxis: {
    title: {
        text: 'USD (millions)',
        font: {
            size: 16,
            color: 'rgb(107, 107, 107)'
        }
    },
    tickfont: {
      size: 14,
      color: 'rgb(107, 107, 107)'
    }
  },
  legend: {
    x: 0,
    y: 1.0,
    bgcolor: 'rgba(255, 255, 255, 0)',
    bordercolor: 'rgba(255, 255, 255, 0)'
  },
  barmode: 'group',
  bargap: 0.15,
  bargroupgap: 0.1
};

Plotly.newPlot('myDiv', data, layout);

Waterfall Bar Chart

// Base

var xData = ['Product<br>Revenue', 'Services<br>Revenue',
  'Total<br>Revenue', 'Fixed<br>Costs',
  'Variable<br>Costs', 'Total<br>Costs', 'Total'
];

var yData = [400, 660, 660, 590, 400, 400, 340];

var textList = ['$430K', '$260K', '$690K', '$-120K', '$-200K', '$-320K', '$370K'];

//Base

var trace1 = {
  x: xData,
  y: [0, 430, 0, 570, 370, 370, 0],
  marker: {
    color: 'rgba(1,1,1,0.0)'
  },
  type: 'bar'
};

//Revenue

var trace2 = {
  x: xData,
  y: [430, 260, 690, 0, 0, 0, 0],
  type: 'bar',
  marker: {
    color: 'rgba(55,128,191,0.7)',
    line: {
      color: 'rgba(55,128,191,1.0)',
      width: 2
    }
  }
};

//Cost

var trace3 = {
  x: xData,
  y: [0, 0, 0, 120, 200, 320, 0],
  type: 'bar',
  marker: {
    color: 'rgba(219, 64, 82, 0.7)',
    line: {
      color: 'rgba(219, 64, 82, 1.0)',
      width: 2
    }
  }
};

//Profit

var trace4 = {
  x: xData,
  y: [0, 0, 0, 0, 0, 0, 370],
  type: 'bar',
  marker: {
    color: 'rgba(50,171, 96, 0.7)',
    line: {
      color: 'rgba(50,171,96,1.0)',
      width: 2
    }
  }
};

var data = [trace1, trace2, trace3, trace4];

var layout = {
  title: {
    text: 'Annual Profit 2015'
  },
  barmode: 'stack',
  paper_bgcolor: 'rgba(245,246,249,1)',
  plot_bgcolor: 'rgba(245,246,249,1)',
  width: 600,
  height: 600,
  showlegend: false,
  annotations: []
};

for ( var i = 0 ; i < 7 ; i++ ) {
  var result = {
    x: xData[i],
    y: yData[i],
    text: textList[i],
    font: {
      family: 'Arial',
      size: 14,
      color: 'rgba(245,246,249,1)'
    },
    showarrow: false
  };
  layout.annotations.push(result);
};

Plotly.newPlot('myDiv', data, layout);

Bar Chart with Relative Barmode

var trace1 = {
  x: [1, 2, 3, 4],
  y: [1, 4, 9, 16],
  name: 'Trace1',
  type: 'bar'
};
var trace2 = {
  x: [1, 2, 3, 4],
  y: [6, -8, -4.5, 8],
  name: 'Trace2',
  type: 'bar'
};
var trace3 = {
  x: [1, 2, 3, 4],
  y: [-15, -3, 4.5, -8],
  name: 'Trace3',
  type: 'bar'
 }

 var trace4 = {
  x: [1, 2, 3, 4],
  y: [-1, 3, -3, -4],
  name: 'Trace4',
  type: 'bar'
 }

var data = [trace1, trace2, trace3, trace4];
var layout = {
  xaxis: {
    title: {
      text: 'X axis'
    }
  },
  yaxis: {
    title: {
      text: 'Y axis'
    }
  },
  barmode: 'relative',
  title: {
    text: 'Relative Barmode'
  }
};

Plotly.newPlot('myDiv', data, layout);