Javascript Object.fromEntries() Method – Convert Array of Key-Value pair into an Object
Javascript Object.fromentries() method converts the iterable array to key, value pairs. This method does the opposite of Object.entries() method.
Syntax
Object.fromentries(object);
To convert a multi-dimensional array to an object the array must have another array and it must have two items first one will be its key and another will become its value.
var person = [
["name" , "Sam"],
["age" , 13],
];
var person_object = Object.fromEntries(person);
console.log("Person : ",person);
console.log("Person object created using fromEntries() method : ",person_object);
//Console Output
Person : (2) [Array(2), Array(2)]
Person object created using fromEntries() method : {name: "Sam", age: 13}
Using Javascript Object.fromEntries() method
We have a multi-dimensional array person which has all its items as an array. The first item is key and the second is its value.
Examples
var fruit = {"name" : "John", "age" : 10 };
var arr = Object.entries(fruit);
var reversed_arr = Object.fromEntries(arr);
console.log("Fruit object ",fruit);
console.log("Fruit object after applying entries() : ",arr);
console.log("Fruit object after applying Fromentries() : ",reversed_arr);
//Console Output
Fruit object {name: "John", age: 10}
Fruit object after applying entries() : (2) [Array(2), Array(2)]
Fruit object after applying Fromentries() : {name: "John", age: 10}
Creating object from array using Object.fromEntries() method
There is another method Object.entries() which converts object to array in form of key, value pair and Object.fromEntries() method is reverse of Object.entries() method. It returns an object from an array key, value pair.
Conclusion
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