My first Echartecharts 柱状配置项内容和展示

      option = {
    title: {
        text: 'My first Echart'
    },
    tooltip:{},
    legend:{
        data:['销量']
    },
    xAxis: {
        data: ['羊毛', '鞋子', '围巾', '手机', '玉米', '豆腐', '衬衫']
    },
    yAxis: {},
    series: [{
        type: 'bar',
        data:[220, 182, 191, 234, 290, 330, 310]
    }]
};