add element in array at particular index in javascrit code example
Example 1: javascript push in specific index
arr.splice(index, 0, item);
//explanation:
inserts "item" at the specified "index",
deleting 0 other items before it
Example 2: add an object to index 0 array js
//Add an object to start of array
splice(index,noOfItemstoDelete,item);
ex - arr.splice(0,0,item);