eachrts map 点击某省份，鼠标移走后保持点击时的颜色 怎么实现

Question

    var app = echarts.init(document.getElementById("bussiness_distribution_container"));
    app.setOption(option1);
    app.on('click', function(params) {
            var city = params.name;
             console.log("city=="+city)
        });

Answer 1

配置 selectedMode : 'multiple',
demo