页面历史

function main(chartView) {
    var chart = chartView.getChartObject();//获取echarts图形
    var options = chart.getOptions();
    var series = options.series;//获取数值信息
    var datas = [];
    for (var i in series) {
        if (series[i].type == "bar") {
            datas = series[i].data;//得到柱图数值数组
        }
    }
    for (var j in datas) {//数组循环进行判断
        datas[j].itemStyle = datas[j].itemStyle || {};
        if (parseInt(datas[j].displayValue) < 0) {
            //设置小于0的柱图的颜色
            datas[j].itemStyle = {
                "normal": {
                    "color": "#99CC33"
                }
            }
        } else {
            //设置大于0的柱图的颜色
            datas[j].itemStyle = {
                "normal": {
                    "color": "#FF5B71"
                }
            }
        }
    }
}