控制盘无法实现echarts shadow' } }, legend: { data: ['Forest配置项内容和展示

这是官方示例中的bar-label-rotation 导入完整的大小为2351kb的echarts.js 在布置到自己的页面的时候会报app is not defined 无法出图 代码中可以看出app与option有相互之间的引用，不能删除 所以添加一个空的app变量后能出图，但是控制盘就不见了 从示例框的检查界面中可以看出使用了一个内嵌的div，但是在翻看了官方教程中并没有相关说明 请教各位前端大佬如何将控制盘实现

      var posList = [
    'left', 'right', 'top', 'bottom',
    'inside',
    'insideTop', 'insideLeft', 'insideRight', 'insideBottom',
    'insideTopLeft', 'insideTopRight', 'insideBottomLeft', 'insideBottomRight'
];
app={};
app.configParameters = {
    rotate: {
        min: -180,
        max: 90
    },
    align: {
        options: {
            left: 'left',
            center: 'center',
            right: 'right'
        }
    },
    verticalAlign: {
        options: {
            top: 'top',
            middle: 'middle',
            bottom: 'bottom'
        }
    },
    position: {
        options: echarts.util.reduce(posList, function(map, pos) {
            map[pos] = pos;
            return map;
        }, {})
    },
    distance: {
        min: 0,
        max: 100
    }
};

app.config = {
    rotate: 90,
    align: 'left',
    verticalAlign: 'middle',
    position: 'insideBottom',
    distance: 15,
    onChange: function() {
        var labelOption = {
            normal: {
                rotate: app.config.rotate,
                align: app.config.align,
                verticalAlign: app.config.verticalAlign,
                position: app.config.position,
                distance: app.config.distance
            }
        };
        myChart.setOption({
            series: [{
                label: labelOption
            }, {
                label: labelOption
            }, {
                label: labelOption
            }, {
                label: labelOption
            }]
        });
    }
};


var labelOption = {
    normal: {
        show: true,
        position: app.config.position,
        distance: app.config.distance,
        align: app.config.align,
        verticalAlign: app.config.verticalAlign,
        rotate: app.config.rotate,
        formatter: '{c}  {name|{a}}',
        fontSize: 16,
        rich: {
            name: {
                textBorderColor: '#fff'
            }
        }
    }
};

option = {
    color: ['#003366', '#006699', '#4cabce', '#e5323e'],
    tooltip: {
        trigger: 'axis',
        axisPointer: {
            type: 'shadow'
        }
    },
    legend: {
        data: ['Forest', 'Steppe', 'Desert', 'Wetland']
    },
    toolbox: {
        show: true,
        orient: 'vertical',
        left: 'right',
        top: 'center',
        feature: {
            mark: {
                show: true
            },
            dataView: {
                show: true,
                readOnly: false
            },
            magicType: {
                show: true,
                type: ['line', 'bar', 'stack', 'tiled']
            },
            restore: {
                show: true
            },
            saveAsImage: {
                show: true
            }
        }
    },
    calculable: true,
    xAxis: [{
        type: 'category',
        axisTick: {
            show: false
        },
        data: ['2012', '2013', '2014', '2015', '2016']
    }],
    yAxis: [{
        type: 'value'
    }],
    series: [{
            name: 'Forest',
            type: 'bar',
            barGap: 0,
            label: labelOption,
            data: [320, 332, 301, 334, 390]
        },
        {
            name: 'Steppe',
            type: 'bar',
            label: labelOption,
            data: [220, 182, 191, 234, 290]
        },
        {
            name: 'Desert',
            type: 'bar',
            label: labelOption,
            data: [150, 232, 201, 154, 190]
        },
        {
            name: 'Wetland',
            type: 'bar',
            label: labelOption,
            data: [98, 77, 101, 99, 40]
        }
    ]
};