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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div id="bar-chart" class="bar-chart"></div>
            
          
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              $textColor: #ccc;
$chartColor: #ff4500;
$backgroundColor: #1d1f20;

*, :after, :before {
  box-sizing: border-box;
  font-family: sans-serif;
}

body {
  background: $backgroundColor;
}

.bar-chart {
  font-size: 12px;
  line-height: 14px;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  cursor: default;
}

.bar-chart .axis path,
.bar-chart .axis line {
  fill: none;
  stroke: $textColor;
  shape-rendering: crispEdges;
}

.bar-chart .axis text {
  fill: $textColor;
}

// Bar chart
.bar-chart .bar {
  fill: $chartColor;
}
.bar-chart .bar:hover {
  fill: darken($chartColor, 5%);
}
.bar-chart .prev-bar {
  fill: lighten($chartColor, 15%);
  shape-rendering: crispEdges;
  pointer-events: none;
}

// Bar chart labels
.bar-chart .bar-label {
  fill: darken($chartColor, 5%);
  pointer-events: none;
}
.bar-chart .prev-bar-label {
  fill: lighten($chartColor, 15%);
  pointer-events: none;
}

// Mode buttons
.bar-chart .mode-button text {
  fill: $textColor;
  font-size: 12px;
  cursor: pointer;
}
.bar-chart .mode-button rect {
  fill: none;
  cursor: pointer;
}
.bar-chart .mode-button.active rect {
  stroke: $chartColor;
  stroke-width: 1px;
}
.bar-chart .mode-button:hover rect {
  fill: $chartColor;
}
.bar-chart .mode-button:hover text {
  fill: $backgroundColor;
}

// Control buttons
.bar-chart .controls .button-prev,
.bar-chart .controls .button-next {
  fill: $textColor;
  cursor: pointer;
}
.bar-chart .controls .button-prev:hover,
.bar-chart .controls .button-next:hover {
  fill: $chartColor;
}

.bar-chart .control-label {
  fill: $textColor;
  font-size: 2.5em;
}
            
          
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              // Generate some random data to present in the chart
var now = moment().endOf('day').toDate();
var time_ago = moment().startOf('day').subtract(10, 'year').toDate();
var data = d3.time.days(time_ago, now).map(function (date, index) {
  return {
    date: moment(date),
    value: Math.floor(Math.random() * 500) + (index % 7 * 100),
  }
});

// Bar chart settings
var margin = {
  top: 100,
  right: 25,
  bottom: 25,
  left: 40,
};

var width = 750 - margin.left - margin.right;
var height = 400 - margin.top - margin.bottom;

var x = d3.scale.ordinal().rangeRoundBands([0, width], 0.1);
var y = d3.scale.linear().range([height, 0]);

var xAxis = d3.svg.axis()
  .scale(x)
  .orient('bottom');

var yAxis = d3.svg.axis()
  .scale(y)
  .orient('left')
  .ticks(10);

// Create svg element for the bar chart
var svgWidth = width + margin.left + margin.right;
var svgHeight = height + margin.top + margin.bottom;
var barChartSVG = d3.select('#bar-chart')
  .append('svg')
  .attr('width', '100%')
  .attr('height', svgHeight)
  .attr('viewBox', '0 0 ' + svgWidth + ' ' + svgHeight)
  .append('g')
  .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

// Initialize selection variables
var modes = ['year', 'month', 'week', 'day'];
var selectedMode = 'week';
var selectedDate = moment();
var intervals = {
  'year': 'months',
  'month': 'days',
  'week': 'days',
  'day': 'hours',
};

// Filter data to a specific range
var filterData = function(range) {
  return range.map(function(d, i) {
    return {
      'key': function() {
        if ( selectedMode === 'year' ) {
          return moment(d).month(i).format('MMM');
        } else if ( selectedMode === 'month' ) {
          return moment(d).date(i+1).format('D');
        } else if ( selectedMode === 'week' ) {
          return moment(d).weekday(i).format('dddd');
        } else if ( selectedMode === 'day' ) {
          return moment(d).hour(i).format('H');
        }
      }(),
      'value': data.filter(function(e) {
        return moment(d).isSame(e.date.clone().startOf(intervals[selectedMode]));
      }).reduce(function(total, e) {
        return total + e.value;
      }, 0)
    }
  });
}

// Return data based on the selected mode and date
var getData = function() {
  var p1 = selectedDate.clone().subtract(1, selectedMode).startOf(selectedMode);
  var p2 = selectedDate.clone().startOf(selectedMode);
  var p3 = selectedDate.clone().endOf(selectedMode);
  return {
    'previous': filterData(d3.time[intervals[selectedMode]](p1, p2)),
    'current': filterData(d3.time[intervals[selectedMode]](p2, p3)),
  }
};

var render = function() {
  renderModeButtons();
  renderControlButtons();

  var data = getData();
  if ( data ) {
    x.domain(data.current.map(function(d) { return d.key; }));
    y.domain([0, d3.max(
      [data.current, data.previous],
      function(arr) {
        return d3.max(arr,
          function(d) {
            return d.value;
          });
      })
    ]);

    renderBarChartAxis();

    renderBarChart(data.current);
    renderBarChartLabels(data.current);

    renderPrevBarChart(data.previous);
    renderPrevBarChartLabels(data.previous);
  } else {
    barChartSVG.selectAll('.bar').remove();
    barChartSVG.selectAll('.prev-bar').remove();
  }
};

var renderModeButtons = function () {
  barChartSVG.selectAll('.mode-button').remove();
  var modeButtons = barChartSVG.selectAll('.mode-button')
    .data(modes)
    .enter()
    .append('g')
    .attr('class', function(d) {
      return d === selectedMode ? 'mode-button active' : 'mode-button';
    })
    .on('click', function(d) {
      selectedMode = d;
      render();
    });

  modeButtons.append('rect')
    .attr('class', 'button-rect')
    .attr('width', 50)
    .attr('height', 30)
    .attr('x', function(d, i) {
      return width - (60*i) - 50;
    })
    .attr('y', -100);

  modeButtons.append('text')
    .attr('class', 'button-label')
    .attr('text-anchor', 'middle')
    .attr('x', function(d, i) {
      return width - (60*i) - 25;
    })
    .attr('y', -80)
    .text(function(d) { return d; });
};

var renderControlButtons = function () {
  barChartSVG.selectAll('.controls').remove();
  var controls = barChartSVG.append('g')
    .attr('class', 'controls');

  // Show currently selected year
  var clText = controls.append('text')
    .attr('class', 'control-label')
    .attr('x', width-30)
    .attr('y', -30)
    .attr('text-anchor', 'end')
    .text(function () {
      if ( selectedMode === 'year' ) {
        return selectedDate.format('YYYY');
      } else if ( selectedMode === 'month' ) {
        return selectedDate.format('MMMM YYYY');
      } else if ( selectedMode === 'week' ) {
        return 'Week ' + selectedDate.format('W YYYY');
      } else if ( selectedMode === 'day' ) {
        return selectedDate.format('DD MMM YYYY');
      }
    });

  // Get the bounding box of the control label text
  var clTextBB = clText[0][0].getBBox();

  // Render prev button
  controls.append('path')
    .attr('class', 'button-prev')
    .attr('d', function() {
      return 'M ' + (width-(clTextBB.width+40)) +' '+ -50 + ' l 0 20 l -15 -10 z';
    })
    .on('click', function() {
      if ( selectedMode === 'year' ) {
        selectedDate.subtract(1, 'year');
      } else if ( selectedMode === 'month' ) {
        selectedDate.subtract(1, 'month');
      } else if ( selectedMode === 'week' ) {
        selectedDate.subtract(1, 'week');
      } else if ( selectedMode === 'day' ) {
        selectedDate.subtract(1, 'day');
      }
      render();
    })

  // Render next button
  controls.append('path')
    .attr('class', 'button-next')
    .attr('d', function() {
      return 'M ' + (width-20) +' '+ -50 + ' l 0 20 l 15 -10 z';
    })
    .on('click', function() {
      if ( selectedMode === 'year' ) {
        selectedDate.add(1, 'year');
      } else if ( selectedMode === 'month' ) {
        selectedDate.add(1, 'month');
      } else if ( selectedMode === 'week' ) {
        selectedDate.add(1, 'week').format('dddd');
      } else if ( selectedMode === 'day' ) {
        selectedDate.add(1, 'day').format('H');
      }
      render();
    })
};

var renderBarChartAxis = function () {
  barChartSVG.selectAll('.axis').remove();
  barChartSVG.append('g')
    .attr('class', 'axis')
    .attr('transform', 'translate(0, ' + height + ')')
    .call(xAxis);
  barChartSVG.append('g')
    .attr('class', 'axis')
    .call(yAxis);
};

var renderBarChart = function(data) {
  barChartSVG.selectAll('.bar').remove();
  barChartSVG.selectAll('.bar')
    .data(data)
    .enter()
    .append('rect')
    .attr('class', 'bar')
    .attr('x', function(d) { return x(d.key); })
    .attr('width', x.rangeBand())
    .attr('y', height)
    .attr('height', 0)
    .on('mouseover', function(d) {
      showLabels(d);
    })
    .on('mouseout', function(d) {
      hideLabels(d);
    })
    .transition()
      .delay(function(d, i) { return i * 150; })
      .duration(150)
      .ease('quad')
      .attr('height', function(d) {
        return Math.max((height-1) - y(d.value), 0);
      })
      .attr('y', function(d) {
        return y(d.value);
      });
};

var renderBarChartLabels = function(data) {
  barChartSVG.selectAll('.bar-label').remove();
  barChartSVG.selectAll('.bar-label')
    .data(data)
    .enter()
    .append('text')
    .attr('class', 'bar-label')
    .attr('text-anchor', 'middle')
    .attr('opacity', 0)
    .attr('x', function(d) {
      return x(d.key) + x.rangeBand() / 2;
    })
    .attr('y', function (d) {
      return y(d.value) + 50;
    })
    .text(function (d) {
      return d.value;
    });
};

var renderPrevBarChart = function(data) {
  barChartSVG.selectAll('.prev-bar').remove();
  barChartSVG.selectAll('.prev-bar')
    .data(data)
    .enter()
    .append('rect')
    .filter(function(d) {
      if ( selectedMode === 'month' ) {
        var daysInMonth = selectedDate.daysInMonth();
        var daysInPrevMonth = selectedDate.clone().subtract(1, 'month').daysInMonth();
        if ( daysInMonth < daysInPrevMonth ) {
          return parseInt(d.key, 10) < daysInMonth;
        }
      }
      return true;
    })
    .attr('class', 'prev-bar')
    .attr('x', function(d) {
      return x(d.key) + x.rangeBand() / 2 - 1;
    })
    .attr('width', 1)
    .attr('y', height)
    .attr('height', 0)
    .transition()
      .delay(function(d, i) { return i * 150; })
      .duration(150)
      .ease('quad')
      .attr('height', function(d) {
        return Math.max((height-1) - y(d.value), 0);
      })
      .attr('y', function(d) {
        return y(d.value);
      });
};

var renderPrevBarChartLabels = function(data) {
  barChartSVG.selectAll('.prev-bar-label').remove();
  barChartSVG.selectAll('.prev-bar-label')
    .data(data)
    .enter()
    .append('text')
    .filter(function(d) {
      if ( selectedMode === 'month' ) {
        var daysInMonth = selectedDate.daysInMonth();
        var daysInPrevMonth = selectedDate.clone().subtract(1, 'month').daysInMonth();
        if ( daysInMonth < daysInPrevMonth ) {
          return parseInt(d.key, 10) < daysInMonth;
        }
      }
      return true;
    })
    .attr('class', 'prev-bar-label')
    .attr('text-anchor', 'middle')
    .attr('opacity', 0)
    .attr('x', function(d) {
      return x(d.key) + x.rangeBand() / 2;
    })
    .attr('y', function (d) {
      return y(d.value) + 50;
    })
    .text(function (d) {
      return d.value;
    });
};

var showLabels = function(d) {
  d3.selectAll('.bar-label')
    .filter(function(l) {
      return l.key === d.key;
    })
    .transition()
      .duration(150)
      .ease('quad')
      .attr('opacity', function(d) {
        return +!!d.value;
      })
      .attr('y', function (d) {
        return y(d.value) - 10;
      });
  d3.selectAll('.prev-bar-label')
    .filter(function(l) {
      return l.key === d.key;
    })
    .transition()
      .duration(150)
      .ease('quad')
      .attr('opacity', function(d) {
        return +!!d.value;
      })
      .attr('y', function (d) {
        return y(d.value) - 10;
      });
};

var hideLabels = function(d) {
  d3.selectAll('.bar-label')
    .filter(function(l) {
      return l.key === d.key;
    })
    .transition()
      .duration(150)
      .ease('quad')
      .attr('opacity', 0)
      .attr('y', function (d) {
        return y(d.value) + 20;
      });
  d3.selectAll('.prev-bar-label')
    .filter(function(l) {
      return l.key === d.key;
    })
    .transition()
      .duration(150)
      .ease('quad')
      .attr('opacity', 0)
      .attr('y', function (d) {
        return y(d.value) + 20;
      });
};

// Key bindings for mode switching and next/prev navigation
d3.select('body').on('keyup', function () {

  // Number 1 / day overview
  if ( d3.event.keyCode === 49 ) {
    selectedMode = 'day';
    render();
  }

  // Number 2 / week overview
  if ( d3.event.keyCode === 50 ) {
    selectedMode = 'week';
    render();
  }

  // Number 3 / month overview
  if ( d3.event.keyCode === 51 ) {
    selectedMode = 'month';
    render();
  }

  // Number 4 / year overview
  if ( d3.event.keyCode === 52 ) {
    selectedMode = 'year';
    render();
  }

  // Left arrow / prev
  if ( d3.event.keyCode === 37 ) {
    if ( selectedMode === 'year' ) {
      selectedDate.subtract(1, 'year');
    } else if ( selectedMode === 'month' ) {
      selectedDate.subtract(1, 'month');
    } else if ( selectedMode === 'week' ) {
      selectedDate.subtract(1, 'week');
    } else if ( selectedMode === 'day' ) {
      selectedDate.subtract(1, 'day');
    }
    render();
  }

  // Right arrow / next
  if ( d3.event.keyCode === 39 ) {
    if ( selectedMode === 'year' ) {
      selectedDate.add(1, 'year');
    } else if ( selectedMode === 'month' ) {
      selectedDate.add(1, 'month');
    } else if ( selectedMode === 'week' ) {
      selectedDate.add(1, 'week');
    } else if ( selectedMode === 'day' ) {
      selectedDate.add(1, 'day');
    }
    render();
  }
});

render();
            
          
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