柱状图-设置每根柱子颜色

参考链接（https://www.jianshu.com/p/2afc2b3627d7）

series: [{
        data: [100, 25, 50, 15, 70],
        type: 'bar',
        itemStyle: {
            normal: {
                //每根柱子颜色设置
                color: function(params) {
                    let colorList = [
                        "#4C94FE",
                        "#C773FF",
                        "#B36F50",
                        "#5D9DA6",
                        "#E2B602",
                    ];
                    return colorList[params.dataIndex];
                }
            }
        }
    }],

运行结果：