v-charts修改點擊圖例事件，legendselectchanged

html:

<!--折線圖-->
<ve-line :extend="item.chartExtend"
         :data-zoom="dataZoom"
         :height="chartHeight"
         :legend="item.legend"
         :data="item"
         :events="chartEvents"
         :settings="isRateTypeData(item.id)?successRateSettings:chartSettings"></ve-line>


須要在v-charts圖表添加legend屬性

chartDataColumns.map(item => {
    console.log('chartDataColumns66',chartDataColumns)
    if(item !== 'TIME'){
        selectedObj[item] = true
    }
})
chartItem['legend'] = selectedObj

this.chartEvents = {    legendselectchanged: (item) => {        let currSelectName = item.name        let currChartItem = self.chartData[self.deleteIndex]        let selectedObj = item.selected        let selectedNum = 0        for(let key in selectedObj){            if(selectedObj[key]){ // selected對象內值爲true                selectedNum++            }            selectedObj[key] = false        }        if(selectedNum > 1){ // selectedNum > 1說明當前所有選中，此時點擊，只有當前的設爲選中            for(let key in selectedObj){                selectedObj[key] = false            }            selectedObj[currSelectName] = true        }else{ // 當前只有一個選中，點擊後，所有重置爲選中            for(let key in selectedObj){                selectedObj[key] = true            }        }        self.$set(currChartItem['legend'], 'selected', selectedObj)    }}