大佬,我换了个方式,直接在initChart给option里的series赋值,定义了X轴和series值,目前都正常可以显示了,tooltip也正常了,就是Y轴变成了2条折现上限的累加了。 js文件 import * as echarts from '../../ec-canvas/echarts'; const app = getApp(); function initChart(canvas, width, height, dpr) { const chart = echarts.init(canvas, null, { width: width, height: height, devicePixelRatio: dpr // new }); canvas.setChart(chart); //var that = this;//把this对象复制到临时变量that const wxreq = wx.request({ url: 'http://121.60.40.43/data/bar2.php', data:{ //id:"1", //name:'Leanne Graham' }, header: { 'content-type': 'application/json' // 默认值 }, success: function (res){ console.log(res.data) const date2=[]; // const lpjc=[]; const yuegangpan=[]; const yuegangluo=[]; for(var i=0;i
echarts如何调用wx.request返回数据中的某字段数据?js文件(需要把series中的三个data字段替换成我数据库中的三个字段) import * as echarts from '../../ec-canvas/echarts'; const app = getApp(); function initChart(canvas, width, height, dpr) { const chart = echarts.init(canvas, null, { width: width, height: height, devicePixelRatio: dpr // new }); canvas.setChart(chart); var option = { tooltip: { trigger: 'axis', axisPointer: { // 坐标轴指示器,坐标轴触发有效 type: 'shadow' // 默认为直线,可选为:'line' | 'shadow' }, confine: true }, legend: { data: ['热度', '正面', '负面'] }, grid: { left: 20, right: 20, bottom: 15, top: 40, containLabel: true }, xAxis: [ { type: 'value', axisLine: { lineStyle: { color: '#999' } }, axisLabel: { color: '#666' } } ], yAxis: [ { type: 'category', axisTick: { show: false }, data: ['汽车之家', '今日头条', '百度贴吧', '一点资讯', '微信', '微博', '知乎'], axisLine: { lineStyle: { color: '#999' } }, axisLabel: { color: '#666' } } ], series: [ { name: '热度', type: 'bar', label: { normal: { show: true, position: 'inside' } }, data: [300, 270, 340, 344, 300, 320, 310], itemStyle: { // emphasis: { // color: '#37a2da' // } } }, { name: '正面', type: 'bar', stack: '总量', label: { normal: { show: true } }, data: [120, 102, 141, 174, 190, 250, 220], itemStyle: { // emphasis: { // color: '#32c5e9' // } } }, { name: '负面', type: 'bar', stack: '总量', label: { normal: { show: true, position: 'left' } }, data: [-20, -32, -21, -34, -90, -130, -110], itemStyle: { // emphasis: { // color: '#67e0e3' // } } } ] }; chart.setOption(option); return chart; } Page({ onShareAppMessage: function (res) { return { title: 'ECharts 可以在微信小程序中使用啦!', path: '/pages/index/index', success: function () { }, fail: function () { } } }, data: { ec: { onInit: initChart } }, onLoad: function (options) { var that = this;//把this对象复制到临时变量that const wxreq = wx.request({ url: 'http://123.23.5.12/data/xxx.php', data:{ //id:"1", //name:'Leanne Graham' }, header: { 'content-type': 'application/json' // 默认值 }, success: function (res){ console.log(res.data); that.userData = res.data; //无效不能实时的渲染到页面 that.setData({ userData: res.data });//和页面进行绑定可以动态的渲染到页面 }, fail: function (res){ console.log(res.data); this.userData = "数据获取失败"; } }) }, onReady() { } }); 数据库中的字段名为,date2,yuegangluo,yuegangpan,lpjc(需要后面3个) 调试输出结果为: [图片] 但是我不会调用到前面的data中,查了很多资料,新手,越看越迷糊,求点拨迷津,感谢~
2021-11-25