splice()

An Array method that removes, replaces, or inserts items by changing the original array.

What does splice() do in JavaScript?

splice() — An Array method that removes, replaces, or inserts items by changing the original array.

const tasks = ["Plan", "Deploy"];
tasks.splice(1, 0, "Test");

Level: Apprentice · More JavaScript terms at this level

Updated September 27, 2026