splice() method. The
splice() method modifies the original array by adding or removing elements from it. Here is an example code snippet that replaces an element at index
i in an array
arr with a new element:
arr.splice(i, 1, newElement);30 chars2 lines
In the above code snippet, the first argument to
splice() is the index where the replacement is to be made. The second argument specifies the number of elements to be removed, which in this case is
1. Finally, the third argument is the
newElement that should be inserted at the specified index.
Here is an example usage of this code snippet:
let arr = ["apple", "banana", "orange", "peach"]; let i = 2; // index of orange let newElement = "grapefruit"; arr.splice(i, 1, newElement); // replace orange with grapefruit console.log(arr); // Output: ["apple", "banana", "grapefruit", "peach"]247 chars6 lines
In the above example, we replace the element at index
2 (which is
"orange") with a new element
"grapefruit". The resulting array is
["apple", "banana", "grapefruit", "peach"].