SOURCE

document.onload = function() {
  var option = {
    xAxis: {
      type: 'category',
      data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    yAxis: {
      type: 'value'
    },
    series: [{
      data: [120, 200, 150, 80, 70, 110, 130],
      type: 'bar'
    }]
  };
  var container = document.getElementById('app');
  var chart = echarts.init(container);
  chart.setOption(option);

}

#app {
  width: 200px;
  height: 200px;
  border: 1px solid red;
}