Example 1: Append Object to Array Using push()
// program to append an object to an array function insertObject(arr, obj) { // append object arr.push(obj); console.log(arr); } // original array let array = [1, 2, 3]; // object to add let object = {x: 12, y: 8}; // call the function insertObject(array, object); Output
[1, 2, 3, {x: 12, y: 8}] In the above program, the push() method is used to add an object to an array.
The push() method adds an item to the end of an array.
Example 2: Append Object to Array Using splice()
// program to append an object to an array function insertObject(arr, obj) { // find the last index let index = arr.length; // appending object to end of array arr.splice(index, 0, obj); console.log(arr); } // original array let array = [1, 2, 3]; // object to add let object = {x: 12, y: 8}; // call the function insertObject(array, object); Output
[1, 2, 3, {x: 12, y: 8}] In the above program, the splice() method is used to add an object to an array.
The splice() method adds and/or removes an item.
In the splice() method,
- The first argument represents the index where you want to insert an item.
- The second argument represents the number of items to be removed (here, 0).
- The third argument represents the element that you want to add to an array.
Example 3: Append Object Using Spread Operator
// program to append an object to an array function insertObject(arr, obj) { // append object arr = [...arr, obj]; console.log(arr); } // original array let array = [1, 2, 3]; // object to add let object = {x: 12, y: 8}; // call the function insertObject(array, object); Output
[1, 2, 3, {x: 12, y: 8}] In the above program, the spread operator ... is used to add an object to an array.
The spread syntax allows you to copy all the elements to an array. Then, the object is added to the end of the array.
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