let Ar=[
{
info:{
name:"Sai",
age:24
},
grade:'A'
},
{
name:"Satish",
grade:'B',
info:{
place:"Hyd",
company:'Company1'
},
info2:{
place2:"Hyderabad",
company2:'Company2'
}
}
]
**Output should be key values pairs only **
[
{
"name": "Sai",
"age": 24,
"grade": "A"
},
{
"name": "Satish",
"grade": "B",
"place": "Hyd",
"company": "Company1",
"place2": "Hyderabad",
"company2": "Company2"
}
]
How we can get only key value pairs form the object and nested object
*Current solution I have like this But do we have more optimized code to get the only key value pairs from an object. I have used Object.keys(obj) and Object.entries(obj) methods to achieve *
let fr=Ar.map((A)=>{
let test=[];
let en= Object.keys(A).map((item) => {
if (typeof A[item] === "object") {
Object.entries(A[item]).map((i)=>{test.push(i)})
} else {
return test.push([item, A[item]]);
}
});
return test;
})
let finalAnswer=fr.map((item)=>{
return Object.fromEntries(item)
})
console.log("Spread Print",finalAnswer)
Is there any better solution than me?
You can use this
let fr=Ar.map((A)=>{
let test={};
Object.keys(A).forEach((item) => {
if (typeof A[item] === "object") {
test={...test,...A[item]};
} else {
test[item]=A[item]
}
}return test });
The below may be one possible solution (using recursion) to achieve the desired objective.
Please note that if there are duplicate keys in nested levels, only the latest/last key-value pair will be retained.
Code Snippet
// recursive method to transform nested objects
const recTxf = parm => {
if (Array.isArray(parm)) { // if key-value pair array
const [k, v] = parm; // either recurse to nested, or return key-value pair
if (typeof v === 'object') return recTxf(v);
else return { [k]: v };
} else return { // otherwise, it is object
...Object.entries(parm) // iterate over key-value pairs
.reduce(
(acc, itm) => ({ // use "reduce" to accumulate/aggregate
...acc,
...recTxf(itm) // aggregate results of the recursive calls
}),
{}
)
};
};
// method to iterate over the array
const myTransform = arr => arr.map(ob => recTxf(ob));
let Ar = [
{
info: {
name: "Sai",
age: 24
},
grade: 'A'
},
{
name: "Satish",
grade: 'B',
info: {
place: "Hyd",
company: 'Company1'
},
info2: {
place2: "Hyderabad",
company2: 'Company2'
}
}
];
console.log(myTransform(Ar));.as-console-wrapper { max-height: 100% !important; top: 0 }Explanation
Inline comments are provided in the snippet above.