Upon entry, there is an array with various objects. A function is needed to convert this incoming array of objects into a single object. The goal is to bring it to the desired form using the function provided.
var array = [
{ k1:v1 },
{ k2:v2 },
{ k3:v3 }
];
function arrayToObject(array) { return object }
var object = {
v1: k1,
v2: k2,
v3: k3,
}
If you want to reverse and combine objects in JavaScript, you can use a combination of Object.assign and spreading the reversed objects.
var array = [ { k1: 'v1' }, { k2: 'v2' }, { k3: 'v3' }],
object = Object.assign(...array.map(o => Object
.entries(o)
.reduce((r, [k, v]) => Object.assign(r, { [v] : k }), {})));
console.log(object);Utilize a forEach loop for iterating through the array.
var data = [
{ key1:'value1' },
{ key2:'value2' },
{ key3:'value3' }
]
function processArray()
{
var result={};
data.forEach((element)=>result[element[Object.keys(element)[0]]]=Object.keys(e)[0])
console.log(result)
}
processArray();To achieve the desired result, you can utilize a combination of the Object.entries() and .reduce() methods as shown below:
const data = [
{ key1:'value1' },
{ key2:'value2' },
{ key3:'value3' }
];
const output = Object.entries(
data.reduce((acc, curr) => Object.assign(acc, curr), {})
).reduce((acc, [key, val]) => (acc[val] = key, acc), {});
console.log(output);Array.reduce can be utilized along with Object.keys to iterate over each element in an array.
var array = [
{ name: 'John' },
{ age: 30 },
{ city: 'New York' }
]
var obj = array.reduce((obj, item) => {
Object.keys(item).forEach(key => obj[item[key]] = key)
return obj
}, {})
console.log(obj)Here's something different:
let data = {};
for(const [[item, info]] of list.map(Object.entries))
data[info] = item;
Why do some answers try so hard to be clever? I prefer simplicity.
This code is easier for me to understand. Instead of using reduce, I chose to use a forEach loop because it makes more sense to me.
const array = [
{ k1:'v1' },
{ k2:'v2' },
{ k3:'v3' }
];
let newObj={};
array.forEach((obj) => {
let key = Object.keys(obj)[0];
newObj[obj[key]]=key;
})
console.log(newObj)Here is your response:
var array = [
{ k1: v1 },
{ k2: v2 },
{ k3: v3 }
];
function convertArrayToObject(array) {
obj = {};
for (i = 0; i < array.length; i++) {
o = array[i];
key = Object.keys(o)[0];
obj.key = o.key;
}
return obj;
}
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