[英]JS Mapping object picking nested array key-values to make them higher level key-values
[英]How to move all key-values of nested JSON object to parent in Node.js
我在第一個級別具有3個嵌套對象的JSON對象。
data{"key1":"value1", "key2":"value2",
"section1":"{"key1_1":"value1_1", "key1_2":"value1_2"}",
"section2":"{"key2_1":"value2_1", "key2_2":"value2_2", "key2_3":"value2_3"}",
"section3":"{"key3_1":"value3_1"}"
}
現在,使用NODE.JS,我需要將所有鍵值從嵌套移動到父對象,並且所有鍵值都位於根級別,如下所示:
data{
"key1":"value1", "key2":"value2","key1_1":"value1_1", "key1_2":"value1_2", "key2_1":"value2_1", "key2_2":"value2_2", "key2_3":"value2_3", "key3_1":"value3_1"
}
使用適當的對象,您可以迭代鍵,如果找到了對象,請使用找到的對象的內容再次調用該函數。
function flat(source, target) { Object.keys(source).forEach(function (k) { if (source[k]!== null && typeof source[k] === 'object') { flat(source[k], target); return; } target[k] = source[k]; }); } var data = { "key1": "value1", "key2": "value2", "section1": { "key1_1": "value1_1", "key1_2": "value1_2" }, "section2": { "key2_1": "value2_1", "key2_2": "value2_2", "key2_3": "value2_3" }, "section3": { "key3_1": "value3_1" } }, flatObject = {}; flat(data, flatObject); console.log(flatObject);
版本以JSON字符串作為值,並使用try ... catch
語句測試該值是否為JSON。
function flat(source, target) { Object.keys(source).forEach(function (k) { var o; try { o = JSON.parse(source[k]); if (o && typeof o === 'object') { flat(o, target); } else { target[k] = o; } } catch (e) { target[k] = source[k]; } }); } var data = { "key1": "value1", "key2": "value2", "section1": "{\\"key1_1\\":\\"value1_1\\", \\"key1_2\\":\\"value1_2\\"}", "section2": "{\\"key2_1\\":\\"value2_1\\", \\"key2_2\\":\\"value2_2\\", \\"key2_3\\":\\"value2_3\\"}", "section3": "{\\"key3_1\\":\\"value3_1\\"}" }, flatObject = {}; flat(data, flatObject); console.log(flatObject);
您可以遞歸遍歷數據並將其添加到空地圖:
var data = { "key1":"value1", "key2":"value2", "section1":{"key1_1":"value1_1", "key1_2":"value1_2"}, "section2":{"key2_1":"value2_1", "key2_2":"value2_2", "key2_3":"value2_3"}, "section3":{"key3_1":"value3_1"} } var fill = function(carry, obj) { for (var key in obj) { if (!obj.hasOwnProperty(key)) { continue; } if (obj[key] instanceof Object) { fill(carry, obj[key]); } else { carry[key] = obj[key]; } } return carry; } var output = {} fill(output, data); console.log(output);
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