關於Echarts圖表根據div大小的改變而改變的問題

 var fhchart = echarts.getInstanceById($("#desk_ygz").attr("_echarts_instance_"));//獲取echarts對象
        if (fhchart) {
            setTimeout("echarts.getInstanceById($('#desk_ygz').attr('_echarts_instance_')).resize()", 100);//如果存在則設置自適應，更新時間爲100ms.
        }