如何从json数组创建一个数组

Question

我有一个这样的 json 响应，

"meteo_inverter_analysis":{  
    "Id93922.1":{  
        "inverter_id":"Id93922.1", "total_electricity_generated":1567.7910000000002
    },
    "Id93922.2":{  
        "inverter_id":"Id93922.2", "total_electricity_generated":1468.4869999999999
    },
    "Id93922.3":{  
        "inverter_id":"Id93922.3","total_electricity_generated":498.7319999999999
    },
    "Id93922.4":{  
        "inverter_id":"Id93922.4","total_electricity_generated":461.8369999999999
    }

}

从该响应中，我想从 total_electricity_generated 创建一个 js 数组。该数组将是： var 数组 = [1567.7910000000002, 1468.4869999999999, 498.7319999999999, 461.8369999999999]

谁能帮我怎么做？ TIA

Answer 1

我认为下面的例子会对你有所帮助：

 <script>
  var car =new Array();
  var myObj, i;
  myObj = {
 "name":"John",
 "age":30,
 "cars":[ "Ford", "BMW", "Fiat" ]
 };

 for (i = 0; i < myObj.cars.length; i++) {
 car[i]= myObj.cars[i] + "<br>";
 }

</script>

Answer 2

您可以获取meteo_inverter_analysis 的键，然后循环到该键以获取Id93922.* 的属性值

var data = {"meteo_inverter_analysis":{  
    "Id93922.1":{  
        "inverter_id":"Id93922.1",     
         "total_electricity_generated":1567.7910000000002
    },
    "Id93922.2":{  
        "inverter_id":"Id93922.2",
        "total_electricity_generated":1468.4869999999999
    },
    "Id93922.3":{  
        "inverter_id":"Id93922.3",
        "total_electricity_generated":498.7319999999999
    },
    "Id93922.4":{  
        "inverter_id":"Id93922.4",
        "total_electricity_generated":461.8369999999999
    }
}
};

var keys = Object.keys(data.meteo_inverter_analysis);
var arr = keys.map(key => data.meteo_inverter_analysis[key].total_electricity_generated
);

console.log(arr);