echart markline data怎么取传进来的值

Posted 2023-04-08

参考技术A 你把你的数组返回值中间用个符号分割，比如分号["a1","b1"];["a2"',"b2"]，然后用split";"进行分割就可以分开使用了。
var t = "['a1','b1'];['a2'','b2']";
var ts = t.split(";");
alert(ts[0]);
alert(ts[1]);

下面这个写法写错了
function initialize(cc)
var html;
$.post("some1.php",value:cc,function(data)var html=data;,"json");
alert(html);

不应该在function(data)里面申明var html，否则html会变成这个方法的体局部变量。你应该改成。
function initialize(cc)
var html;
$.post("some1.php",value:cc,function(data)html=data;,"json");
alert(html);

但是即便这样改了，alert(html)仍然是空。
你还没有搞清楚ajax的逻辑。ajax是异步的。function(data)里的内容是延迟执行，在你最后alert(html)的时候，function(data)还没有执行，所以alert(html)永远是空。

Echarts自定义图表显隐开关

1. 插入折线

   // 插入折线
   function appendLineToChart(name, data, zeroData) {
       var line = {
           name: name,
           type: ‘line‘,
           xAxisIndex: 0,
           smooth: false,
           connectNulls: true,
           data: data,
           markLine: {
               lineStyle: {
                   type: ‘dashed‘
               },
               data: zeroData
           }
       }
       option.series.push(line);
       chart.setOption(option);
   }

    

2. 清除折线

   function removeLineFromChart(name) {
       var index = -1;
       for (var i = 0; i < option.series.length; i++) {
           if (option.series[i].name == name) {
               index = i;
               break;
           }
       }
   
       if (index > -1) {
           option.series.splice(index, 1);
           chart.setOption(option, true);  // 设置option不合并（覆盖）
       }
   }

    

3. 对于其中的交互和传值可以动态的去创建对象

   function parseSkData(skData, dataInfo) {
   
       var skTime = dataInfo.time;
       var skAgingType = dataInfo.skAgingType;
       var fileName = getSKFileName(skTime, skAgingType);
   
       data = skData["stationDataList"];
   
       var Station = {};
   
       Station[fileName + ‘:tmp‘] = new Array();
       Station[fileName + ‘:dp‘] = new Array();
       Station[fileName + ‘:tmp_zero‘] = null;
   
   
       if (!(data == null || data == undefined || data == ‘‘)) {
           /*获取折线折点*/
   
           for (var i = 0; i < data.length; i++) {
               var line = data[i];
               var _dew = line.dew;
               var _height = line.height;
               var _hpa = line.hpa;
               var _tmp = line.tmp;
               var _winDir = line.winDir;
               var _winSpeed = line.winSpeed;
   
               _dew = _dew == 9999 ? ‘-‘ : _dew;
               _height = _height == 9999 ? ‘-‘ : _height;
               _hpa = _hpa == 9999 ? ‘-‘ : _hpa;
               _tmp = _tmp == 9999 ? ‘-‘ : _tmp;
               _winDir = _winDir == 9999 ? ‘-‘ : _winDir;
               _winSpeed = _winSpeed == 9999 ? ‘-‘ : _winSpeed;
   
               Station[fileName + ‘:tmp‘][i] = new Array(_tmp, _hpa);
               Station[fileName + ‘:dp‘][i] = new Array(_dew, _hpa);
           }
   
           Station[fileName + ‘:tmp_area_data‘] = [];
           Station[fileName + ‘:tmp_zero‘] = calcZero(data, ‘tmp‘, Station[fileName + ‘:tmp_area_data‘]);
   
           /*计算冷暖层强度*/
           if (Station[fileName + ‘:tmp_zero‘].length > 1) {
               Station[fileName + ‘:tmp_areas‘] = [];
               Station[fileName + ‘:tmp_areas‘] = calAreas(Station[fileName + ‘:tmp_area_data‘]);
           }
       }
       return Station;
   }