Echarts在线免费图表

 
            option = {
    xAxis: {
        type: 'category',
        data: ['优化前', '代码懒注入']
    },
    yAxis: {
        type: 'value'
    },
    series: [{
        data: [284, 152],
        type: 'bar',
        showBackground: true,
        barWidth: 120,
        backgroundStyle: {
            color: 'rgba(180, 180, 180, 0.2)'
        }
    }]
};