UI+Echarts封装的组件实例(2)

在使用上述组件过程中，发现当转置和表格切换之后里面全部都有变化，虽然可以做到单个panel组件自己实现转置和切换，但是发现如果数据太多会导致页面卡死，为了性能优化所以后来考虑采用多vue对象的形式（虽然我的思路是如果改变数据之后，vue将重新渲染html，导致页面卡死，但是后来仔细查资料之后，发现vue当数据改变之后会复用原来相同的html。但是由于时间的原因，也没试。大家可以考虑一下）

采用多vue对象的形式之后的页面

html

<div></div>

js,panel组件

var panelsVueArr = []; var responseData; function createHtml(respData){ var indicatorResult = respData.indicatorResult; var indicators = []; for(var j=0;j<indicatorResult.indicatorNames.length;j++){ var indicator = {}; indicator["indicatorName"]=indicatorResult.indicatorNames[j]; indicator["indicatorUnit"]=indicatorResult.indicatorUnits[j]; indicator["rowKeys"]=indicatorResult.rowKeys; indicator["colKeys"]=indicatorResult.colKeys; indicator["indicatorData"]=indicatorResult[indicatorResult.indicatorNames[j]]; indicators.push(indicator); } for(var i =0;i<indicators.length;i++){ var el = $("<div></div>"); $(".resultDiv").append(el[0]); var vueObj = new Vue({ el : el[0], template : '<div><el-collapse><el-collapse-item>'+ '<template slot="title"><span>{{item.indicatorName}}({{item.indicatorUnit}}) <a href="#" :class="item.indicatorName" download="somedata.xls" @click="exportExcel" data-command="show" title="保存为表"></a>'+ '<a href="#" aria-hidden="true" @click="convert" data-command="show" title="图表切换"></a><a href="#" aria-hidden="true" @click="transpose" data-command="show" title="行列转置"></a>'+ '</span></template><template><div v-show="!tableAndMap" :id="item.indicatorName"></div></template><template v-if="tableAndMap"><el-table :data="item.tableData" max-height="300" stripe border fix fit>'+ '<el-table-column v-for="(column,index) in item.columns" :prop="column" :fixed="index==0" :label="column" :min-width="column.length<8?118:column.length>16?250:column.length*15"></el-table-column></el-table></template></el-collapse-item></el-collapse></div>', props : ['item','mapOption'], data : { indicator : indicators[i], rowOrColumn : false, // 行列转换 tableOrMap : true, // 表和图切换 tableAndMap : true, // 表和图同时显示 indexid : i, mapInitOption : { title : { text : '', show : false }, tooltip : { trigger : 'item', formatter: '' }, legend : { data : [], right : 90, // 不要遮住右边的按钮 left : 85, padding : 10 }, toolbox : { show : true, feature : { mark : { show : true }, magicType : { show : true, type : ['line', 'bar'] }, restore : { show : true }, saveAsImage : { show : true } } }, grid : { y : '', y2 : '', containLabel : true }, calculable : true, xAxis : [{ type : 'category', boundaryGap : false, axisLabel : { interval : 0 // rotate : 45 } } ], yAxis : [{ type : 'value', axisLabel : { formatter : yAxisFormatter } } ] } // echarts 初始化参数 }, methods : { transpose : function (ev) { if (this.rowOrColumn) { this.item = this.listToRowObject(this.indicator); this.mapOption = this.listToRowMap(this.indicator); this.rowOrColumn = false; } else { this.item = this.listToColumnObject(this.indicator); this.mapOption = this.listToColumnMap(this.indicator); this.rowOrColumn = true; } var indicatorName = this.mapOption.title.text; var myChart = echarts.init(document.getElementById([indicatorName]),rmp_theme); var grid = computerGrid(this.mapOption); myChart.resize({ width : grid.chartWidth+"px", height : grid.chartHeight+"px" }); myChart.setOption(this.mapOption); ev.stopPropagation(); }, listToColumnObject : function (ListAndList) { var x_y = column.text+"\\"+row.text; var itemTable ={}; var columnR = []; var tableData=[]; for (var yIndex in ListAndList.indicatorData) { var obj = {}; obj[x_y] = ListAndList.colKeys[yIndex]; for (var xIndex in ListAndList.indicatorData[yIndex]) { obj[ListAndList.rowKeys[xIndex]] =cellsDeal(ListAndList.indicatorData[yIndex][xIndex],ListAndList.indicatorUnit); } tableData.push(obj); } columnR.push(x_y); columnR = columnR.concat(ListAndList.rowKeys); itemTable["indicatorName"]=ListAndList.indicatorName; itemTable["tableData"] = tableData; itemTable["columns"]=columnR; itemTable["indicatorUnit"]=ListAndList.indicatorUnit; return itemTable; }, listToRowObject : function (ListAndList) { var itemTable ={}; var indicatorMap = {}; var indicatorData=[]; var y_x = row.text+"\\"+column.text; var columnR = []; var tableData = []; columnR.push(y_x); columnR = columnR.concat(ListAndList.colKeys); indicatorData.push(ListAndList.rowKeys); indicatorData = indicatorData.concat(ListAndList.indicatorData); for (var k = 0; k < indicatorData[0].length; k++) { var aRow = {}; for (var j = 0; j < indicatorData.length; j++) { if(j==0){ aRow[columnR[j]] = indicatorData[j][k]; }else{ aRow[columnR[j]] = cellsDeal(indicatorData[j][k],ListAndList.indicatorUnit); } } tableData.push(aRow); } itemTable["indicatorName"]=ListAndList.indicatorName; itemTable["tableData"] = tableData; itemTable["columns"]=columnR; itemTable["indicatorUnit"]=ListAndList.indicatorUnit; return itemTable; }, listToColumnMap : function (ListAndList) { // var echartOption = echarts.getInstanceByDom(document.getElementById(ListAndList.indicatorName)).getOption(); // var mapType = echarts.getInstanceByDom(document.getElementById(ListAndList.indicatorName)).getOption().series[0].type; var options = []; var sigleOption = {}; sigleOption = this.mapInitOption; // 实现深复制 var rowKeys = JSON.parse(JSON.stringify(ListAndList.rowKeys)); rowKeys.pop(); sigleOption.xAxis[0]["data"] = rowKeys; var indicatorName = ListAndList.indicatorName; sigleOption["title"]["text"] = indicatorName; var series = []; for (var k = 0; k < ListAndList.indicatorData.length - 1; k++) { var sigleSerie = { type : 'line', barMaxWidth : 40, barMinHeight : 15 }; sigleSerie["name"] = ListAndList.colKeys[k]; var rows = JSON.parse(JSON.stringify(ListAndList.indicatorData[k])) rows.pop(); sigleSerie["data"] = rows; series.push(sigleSerie); } sigleOption["series"] = series; var legendData = JSON.parse(JSON.stringify(ListAndList.colKeys)); legendData.pop(); sigleOption.legend.data = legendData; var unitHandle=ListAndList.indicatorUnit; sigleOption.tooltip.formatter=function (params,ticket,callback) { var myUnit =unitHandle; var html = '<span'+ '>行:'+params.seriesName +'</span><br>'; html+='<span>列:'+params.name +'</span><br>'; var showValue = params.value; if (typeof (showValue) == "undefined") { showValue = "NoData"; } else { // 图悬浮框 千分位+万 +单位 if (!isNaN(showValue)) { if (showValue > 10000) { showValue = toThousands((showValue / 10000).toFixed(1)) + $.i18n.get('chart.wan')+ myUnit; }else{ if(unitHandle=='%'){ showValue=parseFloat(showValue)*100; showValue = showValue.toFixed(1) + myUnit; }else{ showValue = showValue.toFixed(1) + myUnit; } } } } html+='<span>值:'+showValue +'</span>'; return html; }; return sigleOption; }, listToRowMap : function (ListAndList) { /* var mapType; if(typeof(this.mapOptions)=='undefined'){ mapType='line'; }else{ mapType = echarts.getInstanceByDom(document.getElementById(ListAndList.indicatorNames[0])).getOption().series[0].type; }*/ var options = []; var sigleOption = {}; sigleOption = this.mapInitOption; // 实现深复制 var colKeys = JSON.parse(JSON.stringify(ListAndList.colKeys)); colKeys.pop(); sigleOption.xAxis[0]["data"] = colKeys; var indicatorName = ListAndList.indicatorName; sigleOption["title"]["text"] = indicatorName; var series = []; for (var k = 0; k < ListAndList.rowKeys.length - 1; k++) { // 图TTL指标去掉 var sigleSerie = { type : 'line', barMaxWidth : 40, barMinHeight : 15 }; var x = []; for (var z = 0; z < ListAndList.colKeys.length - 1; z++) { x.push(ListAndList.indicatorData[z][k]); } sigleSerie["name"] = ListAndList.rowKeys[k]; sigleSerie["data"] = x; series.push(sigleSerie); } sigleOption["series"] = series; var legendData = JSON.parse(JSON.stringify(ListAndList.rowKeys)); legendData.pop(); sigleOption.legend.data = legendData; var unitHandle=ListAndList.indicatorUnit; sigleOption.tooltip.formatter=function (params,ticket,callback) { var myUnit =unitHandle; var color = params.color; var html = '<span' + '">行:'+params.seriesName +'</span><br>'; html+='<span' + '">列:'+params.name +'</span><br>'; var showValue = params.value; if (typeof (showValue) == "undefined") { showValue = "NoData"; } else { // 图悬浮框 千分位+万 +单位 if (!isNaN(showValue)) { if (showValue > 10000) { showValue = toThousands((showValue / 10000).toFixed(1)) + $.i18n.get('chart.wan')+myUnit; }else{ if(unitHandle=='%'){ showValue=parseFloat(showValue)*100; showValue = showValue.toFixed(1) + myUnit; }else{ showValue = showValue.toFixed(1) + myUnit; } } } } html+='<span' + '">值:'+showValue +'</span>'; return html; }; return sigleOption; }, convert : function (ev) { if (this.tableAndMap) { this.tableAndMap = false; } else { this.tableAndMap = true; } var indicatorName = this.mapOption.title.text; var myChart = echarts.init(document.getElementById([indicatorName]),rmp_theme); var grid = computerGrid(this.mapOption); myChart.resize({ width : grid.chartWidth+"px", height : grid.chartHeight+"px" }); myChart.setOption(this.mapOption); ev.stopPropagation(); }, exportExcel : function (ev) { var listAndList = JSON.parse(JSON.stringify(this.indicator)); var rowTd = listAndList.rowKeys; var excellData = []; rowTd.splice(0, 0, listAndList.indicatorName+'('+listAndList.indicatorUnit+')'); excellData.push(rowTd); for (var i = 0; i < listAndList.indicatorData.length; i++) { for(var j=0;j<listAndList.indicatorData[i].length;j++){ listAndList.indicatorData[i][j]=cellsDeal(listAndList.indicatorData[i][j],listAndList.indicatorUnit); } var rowTr = listAndList.indicatorData[i]; rowTr.splice(0, 0, listAndList.colKeys[i]); excellData.push(rowTr); } ExcellentExport.excelByData($("." + listAndList.indicatorName)[0], excellData, 'Sheet', 'download' + new Date().getTime() + '.xls'); return ev.stopPropagation(); } }, watch : { indicator : function (newValue) { } }, mounted : function () { // this.item= this.listToRowObject(this.indicator); }, beforeMount : function(){ this.item= this.listToRowObject(this.indicator); this.mapOption = this.listToRowMap(this.indicator); } }) panelsVueArr.push(vueObj); } } //格式化Y轴数字显示 var yAxisFormatter = function(value, index) { var text = value; if (!isNaN(value)) { if (value > 10000) { // 千分位 + 万 text = toThousands((value / 10000).toFixed(1)) + $.i18n.get('chart.wan'); } } if (value.formatter) { text = value.formatter.replace("{value}", text); } return text; } //格式化tooltip var tooltipFormatter = function (params,ticket,callback) { console.log(params); var color = params.color; var html = '<span>行:'+params.seriesName +'</span>'; html+='<span>列:'+params.name +'</span>'; var showValue = params.value; if (typeof (showValue) == "undefined") { showValue = "NoData"; } else { // 图悬浮框 千分位+万 +单位 if (!isNaN(showValue)) { if (showValue > 10000||showValue<-10000) { showValue = toThousands((showValue / 10000).toFixed(1)) + $.i18n.get('chart.wan'); }else{ showValue=parseFloat(showValue)*100; showValue = showValue.toFixed(1) + unitHandle(); } } } html+='<span>值:'+showValue +'</span>'; console.log(html); return html; } // 数字格式处理 1,000,000 function toThousands(num) { if (typeof (num) == 'undefined') { num = "" } num = num + '', result = ''; if (num.indexOf('%') > -1) { return num; } var s = ""; if (num.indexOf('.') > -1) { s = num.substring(num.indexOf('.'), num.length); num = num.substring(0, num.indexOf('.')); } var n = false; if (num.indexOf('-') > -1) { num = num.substring(1); n = true; } while (num.length > 3) { result = ',' + num.slice(-3) + result; num = num.slice(0, num.length - 3); } if (num != undefined) { result = num + result; } if (n) { result = "-" + result; } if(s=='.0'){ return result; } return result + s; } // 千分位与单位处理 function cellsDeal(num,unit) { if (typeof (num) == 'undefined') { num = ""; } if(num===''){ return num; } num = num + '', result = ''; if (unit=='%') { num=parseFloat(num)*100; num = num.toFixed(1) + ''; if(num.indexOf(".")!=-1){ return num.substring(0,num.indexOf(".")+2)+"%"; }else{ return num+"%"; } } var s = ""; if (num.indexOf('.') > -1) { num=parseFloat(num).toFixed(1); s = num.substring(num.indexOf('.'), num.length); //小数位 num = num.substring(0, num.indexOf('.')); //整数位 } var n = false; if (num.indexOf('-') > -1) { num = num.substring(1); n = true; } while (num.length > 3) { result = ',' + num.slice(-3) + result; num = num.slice(0, num.length - 3); } if (num != undefined) { result = num + result; } if (n) { result = "-" + result; } if(unit.indexOf("https://www.jb51.net/")!=-1){ s=s.substring(0,2); }else{ s=""; } return result + s; } /*动态计算echarts的grid属性 */ function computerGrid(options){ // 图宽度 默认 var chartWidth = 810; // 图例占宽度比 var legendWidth = chartWidth * 0.8; // 图高度默认 var chartHeight = 250; // 图中grid离容器下边距高度默认 var bottomHeight = 25; // 图中grid离容器上边距高度默认 var topHeight = 40; // 根据x轴刻度数量 算宽度，如果超过默认 则使用计算值 if (options.xAxis[0].data.length * 30 - chartWidth > 0) { chartWidth = options.xAxis[0].data.length * 30; } // x轴刻度 最长的长度值 var maxLength = 0; var legendCount = 8; if (options.xAxis[0].data.length > legendCount) { options.xAxis[0].data.forEach(function(val) { if (maxLength < val.length) { maxLength = val.length; if (/[^\u0000-\u00FF]/.test(val)) { // 计算图中grid离容器下边距高度 bottomHeight = maxLength * 14; } else { // 计算图中grid离容器下边距高度 bottomHeight = maxLength * 13.5; } } }); } var tmpWidth = 0; options.legend.data.forEach(function(val) { if (/[^\u0000-\u00FF]/.test(val)) { tmpWidth += val.length * 22 + 30; } else { tmpWidth += val.length * 11 + 30; } }); var rowNum = tmpWidth / legendWidth; // 根据图例算 图中grid离容器上边距高度 if (rowNum > 1) { topHeight += (rowNum - 1) * 23; } chartHeight += bottomHeight + topHeight; options.legend['width'] = legendWidth; options.grid.y2 = bottomHeight; options.grid.y = topHeight; if(chartWidth!='810'){ options.grid["x"]=40; } var columnAndRow = ['startProvince','startArea']; //始发省份和地区默认X轴旋转45度 if(options.xAxis[0].data[0].match('^(\\d+)\\+(\\d+)')!=null||columnAndRow.indexOf(column.code)!=-1||columnAndRow.indexOf(row.code)!=-1){ options.xAxis[0].axisLabel['rotate']=45; }else{ options.xAxis[0].axisLabel['rotate']=0; } return {chartHeight:chartHeight,chartWidth:chartWidth}; }

上述代码实现了 echart图数据的格式化，和对数据的自适应。修改为上述方式之后发现性能提高了不止一个数量级。

以上这篇VUE2.0+Element-UI+Echarts封装的组件实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。

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