使用地图遍历对象数组。在javascript中过滤，减少或Object.keys（）

看到这个，

https://jsfiddle.net/xianshenglu/5wtLffjp/1/

核心代码：

    
      function transData(data) {
 let dataTemp = JSON.parse(JSON.stringify(data));
 function iteratorProperty(dataTemp, propertyArray, level) {
     if (dataTemp != undefined) {
         dataTemp.forEach((obj, index) => {
             Object.keys(obj).forEach((key, val) => {
                 if (propertyArray.indexOf(key) === -1) {
                     delete obj[key];
                 }
             });
             switch (level) {
                 case 0:
                     iteratorProperty(obj.languages, [‘language’, ‘details’], 1);
                     break;
                 case 1:
                     iteratorProperty(obj.details, [‘phase_name’], 2);
                     break;
             }
         });
     }
     return dataTemp;
 }
 iteratorProperty(dataTemp, [‘project_name’, ‘languages’], 0);
 return dataTemp;
}
</code>