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[英]Javascript iterate through nested Object and return transformed and renamed Array of objects
[英]Javascript - nested arrays transformed to array of objects
我有一个像这样的嵌套数组数据结构-
var arrays = [
[
['firstName', 'Joe'], ['lastName', 'Blow'], ['age', 42], ['role', 'clerk']
],
[
['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['role', 'manager']
]
];
我需要将其转换为对象数组-
[
{firstName: 'Joe', lastName: 'Blow', age: 42, role: 'clerk'},
{firstName: 'Mary', lastName: 'Jenkins', age: 36, role: 'manager'}
]..
My code below gives-
function objectArray(arr) {
var obj1 ={};
var empData=[];
for (var i = 0; i < arr.length; i++)
{
if (Array.isArray(arr[i]))
{
arr[i].reduce(function(acc,prd){
// console.log(prd);
console.log(acc.key=prd[0],acc.Value=prd[1]);//--> output shown below
return acc;
},{});
}
}
}
var returnArrayOfObjs = objectArray(arrays);
var empData = [];
empData.push(returnArrayOfObjs);
console.log(empData);
上面的日志语句给了我一个[undefined],如下所示:
firstName Joe
lastName Blow
age 42
role clerk
firstName Mary
lastName Jenkins
age 36
role manager
[undefined]
使用Array#map迭代数组,然后Array#reduce每个子数组成为一个对象。
const arr = [[["firstName","Joe"],["lastName","Blow"],["age",42],["role","clerk"]],[["firstName","Mary"],["lastName","Jenkins"],["age",36],["role","manager"]]]; const result = arr.map((subArr) => subArr.reduce((obj, [key, value]) => { obj[key] = value; return obj; }, {})); console.log(result);
我写了一个forEach()
解决方案,但是map()
/ reduce()
可能更优雅,所以我赞成@OriDrori :)只是为了比较而发表。
var arrays = [[['firstName', 'Joe'], ['lastName', 'Blow'], ['age', 42], ['role', 'clerk']], [['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['role', 'manager']] ]; var rst = []; arrays.forEach(function(item){ var obj = {}; item.forEach(function( subitem, index ){ obj[ subitem[0] ] = subitem[1] }); rst.push(obj); }); console.log( rst );
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