如何从此JSON数据中的第二个元素获取第一个值？

问题描述：

我有2个集合FailedCount和SucceededCount的JSON。如何从此JSON数据中的第二个元素获取第一个值？

{ 
"FailedCount": [{ 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:40:09.0", 
    "FailedCount_DATE__CURRENT__CHECK": "10:40:09", 
    "FailedCount_MEAS_VALUE": 0 
    }, { 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:45:09.0", 
    "FailedCount_DATE__CURRENT__CHECK": "10:45:09", 
    "FailedCount_MEAS_VALUE": 0 
    }, { 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:50:09.0", 
    "FailedCount_DATE__CURRENT__CHECK": "10:50:09", 
    "FailedCount_MEAS_VALUE": 1 
    }], 
    "SucceededCount": [{ 
    "SucceededCount_MEAS_VALUE": 555 
    }, { 
    "SucceededCount_MEAS_VALUE": 547 
    }, { 
    "SucceededCount_MEAS_VALUE": 339 
    }] 
}

如何获得第一个值SucceededCount？

我想：

jsonObj.SucceededCount[1];

但结果并不好：[object Object]。

使用jsonObj.SucceededCount [1] .SucceededCount_MEAS_VALUE –

'obj.SucceededCount [0] [ “SucceededCount_MEAS_VALUE”]的属性' – nicovank

**第一个**将会是索引0，而不是1，但是说了'[object Object]'是一个对象如何显示为一个字符串 –

答

试试这个

jsonObj.SucceededCount[0].SucceededCount_MEAS_VALUE;

希望这有助于。

答

以你的对象的属性SucceededCount。你现在有一个数组。借此阵列SucceededCount[0]的拳头对象，然后选择需要SucceededCount[0].SucceededCount_MEAS_VALUE

var obj = { 
 
    "FailedCount": [{ 
 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:40:09.0", 
 
    "FailedCount_DATE__CURRENT__CHECK": "10:40:09", 
 
    "FailedCount_MEAS_VALUE": 0 
 
    }, { 
 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:45:09.0", 
 
    "FailedCount_DATE__CURRENT__CHECK": "10:45:09", 
 
    "FailedCount_MEAS_VALUE": 0 
 
    }, { 
 
    "FailedCount_DATE_CURRENT_CHECK": "2016-11-30 10:50:09.0", 
 
    "FailedCount_DATE__CURRENT__CHECK": "10:50:09", 
 
    "FailedCount_MEAS_VALUE": 1 
 
    }], 
 
    "SucceededCount": [{ 
 
    "SucceededCount_MEAS_VALUE": 555 
 
    }, { 
 
    "SucceededCount_MEAS_VALUE": 547 
 
    }, { 
 
    "SucceededCount_MEAS_VALUE": 339 
 
    }] 
 
}; 
 

 
console.log(obj.SucceededCount[0].SucceededCount_MEAS_VALUE);

@Downvoter，为什么？ – Weedoze

如何从此JSON数据中的第二个元素获取第一个值？

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