js 获取echarts点击点的X轴和Y轴值

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      function (ec) {                var line = ec.init(document.getElementById('lineChart'));                 var option = {                    tooltip: {                        show: true                    },                    legend: {                        data:['销量']                    },                    xAxis : [                        {                            type : 'category',                            data : ["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"]                        }                    ],                    yAxis : [                        {                            type : 'value'                        }                    ],                    series : [                        {                            "name":"苹果销售量",                            "type":"line",                            "data":[8956, 2025, 3640, 5610, 8910, 5720, 3467, 9023, 8367, 5342, 6754, 8753]                        }                    ]                };                line.setOption(option);             }      点击事件：        function queryXY(param){                //seriesIndex：系列序号，dataIndex：数值序列，seriesName：legend名称，name：X轴值，data和value都代表Y轴值                var seriesIndex = param.seriesIndex;                var dataIndex = param.dataIndex;                var seriesName = param.seriesName;                var name = param.name;                var data = param.data;                var value = param.value;                console.dir(param);                var str = "seriesIndex:"+seriesIndex+"****"+"dataIndex:"+dataIndex+"****"+"seriesName:"+seriesName+"****"+                         "name:"+name+"****"+"data:"+data+"****"+"value:"+value;                alert(str);         }         line.on(config.EVENT.CLICK,queryXY);
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