In a scenario where there are two different arrays
let first = [
{ name: 'abc', num: 123, isPresent: true },
{ name: 'xyz', num: 456, isPresent: false }]
let second = []
What would be the best way to loop through the first array and extract only the name and isPresent values to create a new array like this?
second = [{ name: 'abc', isPresent: true }, {name: 'xyz', isPresent: false }]
If you want to generate a new array filled with the outcomes of running a specific function on each item in an existing array, consider utilizing Array.prototype.map() along with the concept of Destructuring assignment:
let first = [
{ name: 'abc', num: 123, isPresent: true },
{ name: 'xyz', num: 456, isPresent: false }]
let second = first.map(({name, isPresent}) => ({name, isPresent}));
console.log(second);If you want to extract specific fields from an array, you can utilize the map function in JavaScript.
let originalArray = [
{ fruit: "apple", quantity: 5, organic: true },
{ fruit: "banana", quantity: 10, organic: false },
];
let extractedArray = originalArray.map(({ fruit, organic }) => ({ fruit, organic }));
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