js数组-一维数组、多维数组----取值问题整理

数组-一维数组、多维数组
data:[
  {
    "hour": 0,
    "jNumber": 0,
    "zNumber": 1.1
  },
  {
    "hour": 1,
    "jNumber": 1,
    "zNumber": 1.2
  },
  {
    "hour": 3,
    "jNumber": 2,
    "zNumber": 1.3
  },
  {
    "hour": 4,
    "jNumber": 3,
    "zNumber": 1.4
  }
]
var aa = data.data1
var arrJ = new Array();
var arrZ = new Array();
var arrS = new Array();
$.each(aa, function(k, v) {
  arrJ.push(v.jNumber);
  arrZ.push(v.zNumber);
  arrS.push(v.hour);
});
得到结果：一维数组
arrJ: [0,1,2,3]
arrZ: [1.1,1.2,1.3,1.4]
arrS: [0,1,3,4]
var arr = new Array();
                    $.each(aa, function(k, v) {
                        var obj = {
                            'hour': v.platformName,
                            'jNumber': v.taskMoney,
                            'zNumber': v.serveMoney,
                        };
                        arr.push(obj);
                    });
得到结果：多维数组
arr:  [
  {
    "hour": 0,
    "jNumber": 0,
    "zNumber": 1.1
  },
  {
    "hour": 1,
    "jNumber": 1,
    "zNumber": 1.2
  },
  {
    "hour": 3,
    "jNumber": 2,
    "zNumber": 1.3
  },
  {
    "hour": 4,
    "jNumber": 3,
    "zNumber": 1.4
  }
]
只保留数组某个字段
var newArr = [];
        for (var i = 0; i < this.datumList.length; i++) { // 
          var obj = {
            'id': this.datumList[i].id,
            'content': this.datumList[i].content,
          };
          newArr.push(obj);
        }
        console.log(newArr, '188')