[英]get value from object javascript es6
let parameters = {
"lifespanCount": 3,
"parameters": {
"fields": {
"date.original": {
"stringValue": "tomorrow",
"kind": "stringValue"
},
"duration.original": {
"stringValue": "3 days",
"kind": "stringValue"
},
"date": {
"structValue": {
"fields": {
"sys.date.recent.original": {
"stringValue": "tomorrow",
"kind": "stringValue"
},
"sys.date.original": {
"stringValue": "tomorrow",
"kind": "stringValue"
},
"sys.date": {
"stringValue": "2018-12-11T12:00:00-05:00",
"kind": "stringValue"
},
"sys.date.recent": {
"stringValue": "2018-12-11T12:00:00-05:00",
"kind": "stringValue"
},
"sys.date.partial": {
"stringValue": "2018-12-11T12:00:00-05:00",
"kind": "stringValue"
},
"sys.date.partial.original": {
"stringValue": "tomorrow",
"kind": "stringValue"
}
}
},
"kind": "structValue"
},
"yes.original": {
"stringValue": "",
"kind": "stringValue"
},
"duration": {
"structValue": {
"fields": {
"sys.duration.object": {
"structValue": {
"fields": {}
},
"kind": "structValue"
},
"sys.duration": {
"structValue": {
"fields": {
"unit": {
"stringValue": "day",
"kind": "stringValue"
},
"amount": {
"numberValue": 3,
"kind": "numberValue"
}
}
},
"kind": "structValue"
},
"sys.duration.original": {
"stringValue": "3 days",
"kind": "stringValue"
}
}
},
"kind": "structValue"
},
"location.original": {
"stringValue": "china",
"kind": "stringValue"
},
"location": {
"structValue": {
"fields": {
"sys.geo-country.original": {
"stringValue": "china",
"kind": "stringValue"
},
"sys.geo-country.object": {
"structValue": {
"fields": {}
},
"kind": "structValue"
},
"sys.geo-country": {
"stringValue": "China",
"kind": "stringValue"
}
}
},
"kind": "structValue"
}
}
}
}
From above object what is the best way to get values like, 从上面的对象中获取值的最佳方法是什么,
let date = parameters.fields['date'].structValue.fields['sys.date'].stringValue;
let country = parameters.fields['location'].structValue.fields['sys.geo-country'].stringValue
what can be a common function so, anyone can access value directly if pass object and key i have tried object.values()
, object.keys()
have also read MDN docs but not getting much more regarding this. 什么可以是常见功能,所以任何人都可以直接访问值,如果我尝试传递object和key的object.values()
, object.keys()
也阅读了MDN文档,但对此没有更多了解。 what my aim is to get the value from object when i pass any key with object. 我的目标是当我将任何键与对象一起传递时从对象获取值。
Based purely on your two examples, the easiest way seems to be: 纯粹基于您的两个示例,最简单的方法似乎是:
function getString(paramField, structField) {
if (parameters.fields[paramField] && parameters.fields[paramField].structValue.fields[structField]) {
return parameters.fields[paramField].structValue.fields[structField].stringValue;
}
return '';
}
Maybe some additional checks are in order, depending on the likelihood of other variance to the structure. 也许要进行一些其他检查,具体取决于结构其他变化的可能性。
Then the calling code can just be: 然后,调用代码可以是:
let date = getString('date', 'sys.date');
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