agar array ke beech me se kuch delete karna hai ya add karna hai to splice ka use karte hain isme start,delete,insert hota hai.
/ start , delete , insert
const myArray = ['item1', 'item2', 'item3'];
// delete
// const deletedItem = myArray.splice(1, 2);
// console.log("delted item", deletedItem);
// insert
// myArray.splice(1, 0,'inserted item');
// insert and delete
const deletedItem = myArray.splice(1, 2, "inserted item1", "inserted item2")
console.log("delted item", deletedItem);
console.log(myArray);