Search results
Learn how to use the splice() method to add and/or remove array elements. See syntax, parameters, examples and browser support for this ECMAScript1 feature.
- Try It Yourself
The W3Schools online code editor allows you to edit code and...
- Tryit Editor V3.6
The W3Schools online code editor allows you to edit code and...
- Try It Yourself
- Overview
- Syntax
- Description
- Examples
- Browser compatibility
- See also
The splice() method of Array instances changes the contents of an array by removing or replacing existing elements and/or adding new elements in place.
To create a new array with a segment removed and/or replaced without mutating the original array, use toSpliced(). To access part of an array without modifying it, see slice().
Parameters
start Zero-based index at which to start changing the array, converted to an integer. •Negative index counts back from the end of the array — if -array.length <= start < 0, start + array.length is used. •If start < -array.length, 0 is used. •If start >= array.length, no element will be deleted, but the method will behave as an adding function, adding as many elements as provided. •If start is omitted (and splice() is called with no arguments), nothing is deleted. This is different from passing undefined, which is converted to 0.
Return value
An array containing the deleted elements. If only one element is removed, an array of one element is returned. If no elements are removed, an empty array is returned.
The splice() method is a mutating method. It may change the content of this. If the specified number of elements to insert differs from the number of elements being removed, the array's length will be changed as well. At the same time, it uses @@species to create a new array instance to be returned.
If the deleted portion is sparse, the array returned by splice() is sparse as well, with those corresponding indices being empty slots.
Remove 0 (zero) elements before index 2, and insert "drum"Remove 0 (zero) elements before index 2, and insert "drum" and "guitar"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().BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.
•Indexed collections guide
•Array
•Array.prototype.concat()
•Array.prototype.push()
•Array.prototype.pop()
•Array.prototype.shift()
Learn how to use the splice() method to manipulate arrays in JavaScript. See examples of deleting, inserting, and replacing elements in an array with the splice() method.
Apr 23, 2021 · Learn how to use the splice() method to remove, add, or replace elements of an array in JavaScript. See examples, syntax, and tips for using this built-in array method.
Jun 26, 2024 · Learn how to use the splice () method to modify an array by removing, replacing or adding elements. See syntax, examples and return value of this inbuilt method.
Jun 21, 2019 · Learn how to use the Array#splice() function to modify an array in-place by adding and removing elements. See examples of removing and inserting elements with splice() and compare it with filter() and unshift().
Learn how to use the splice() method to modify an array by adding, removing or replacing elements. See syntax, parameters, return value and examples of splice() in JavaScript.
