Array.prototype.splice() - JavaScript | MDN

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converted to an integer

Zero-based index at which to start changing the array, converted to an integer.

Remove 0 (zero) elements at index 0, and insert "angel"

splice(0, 0, ...elements) inserts elements at the start of the array like unshift().

Remove 0 (zero) elements at last index, and insert "sturgeon"

splice(array.length, 0, ...elements) inserts elements at the end of the array like push().

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This page was last modified on Jul 10, 2025 by MDN contributors.

[Symbol.iterator]()

[Symbol.unscopables]

[Symbol.hasInstance]()

__defineGetter__()

__defineSetter__()

__lookupGetter__()