JavaScript(JS) JS append an object to an array

In JavaScript, you can append an object to an array using the push() method. Here's an example:

let myArray = [{ name: "John", age: 30 }, { name: "Mary", age: 25 }];
let newObject = { name: "Bob", age: 40 };
myArray.push(newObject);
console.log(myArray); // Output: [{ name: "John", age: 30 }, { name: "Mary", age: 25 }, { name: "Bob", age: 40 }]

In the example above, we create an array myArray with two objects as elements. We then create a new object newObject with a name property of "Bob" and an age property of 40. We append the new object to the myArray array using the push() method. The resulting array is [{ name: "John", age: 30 }, { name: "Mary", age: 25 }, { name: "Bob", age: 40 }].

Note that the push() method modifies the original array by adding the new element to the end of it. If you need to insert the new element at a specific position in the array, you can use the splice() method instead. For example, to insert the new object at the beginning of the array, you could do:

let myArray = [{ name: "John", age: 30 }, { name: "Mary", age: 25 }];
let newObject = { name: "Bob", age: 40 };
myArray.splice(0, 0, newObject);
console.log(myArray); // Output: [{ name: "Bob", age: 40 }, { name: "John", age: 30 }, { name: "Mary", age: 25 }]

In the example above, we use the splice() method to insert the new object at position 0 of the myArray array, which pushes all the existing elements to the right. The resulting array is [{ name: "Bob", age: 40 }, { name: "John", age: 30 }, { name: "Mary", age: 25 }].