Echars 宽高自适应

 var worldMapContainer = document.getElementById('tongjituZuanQu');

    //用于使chart自适应高度和宽度,通过窗体高宽计算容器高宽
    var resizeWorldMapContainer = function () {
        worldMapContainer.style.width = (window.innerWidth-20)+'px';
        worldMapContainer.style.height = (window.innerHeight-20)+'px';
    };

========================================
在生成图表的方法中调用：
    var piechart = document.getElementById('tongjituZuanQu');
               // $("#tongjituZuanQu").width($(window).width());
                //$("#tongjituZuanQu").height($(window).height());
                var myChart = echarts.init(piechart);
                myChart.setOption(option);
                window.onresize = function () {
                    //重置容器高宽
                    resizeWorldMapContainer();
                    myChart.resize();
                };