What does splice mean in vue?

In Vue.js, the splice method is used to operate arrays in a variable manner. It removes elements from the array and optionally replaces or inserts new elements: Remove elements: start specifies the starting position of deletion, deleteCount specifies the number to delete. Delete multiple elements: When deleteCount is greater than 1, delete the specified number of elements starting from start. Insert elements: Insert new elements at start and specify 0 at deleteCount. Replace element: When deleteCount is 1, replace the existing element at start with the new element.

The meaning of splice in Vue

splice is a built-in method in Vue.js for Operate arrays in a mutable manner. It removes elements from the given array and optionally replaces or inserts new elements.

Usage method

The splice method accepts three parameters:

• start: The index at which to start deleting elements Location.
• deleteCount: The number of elements to be deleted.
• items... (optional): New element inserted at start index.

Return Value

The splice method returns an array containing the elements removed from the original array.

Example

Suppose we have an array called "numbers":

const numbers = [1, 2, 3, 4, 5, 6];

Remove elements

The following code will delete the element with index position 1 from the numbers array:

numbers.splice(1, 1); // [2, 3, 4, 5, 6]

Delete multiple elements

The following code will delete the index position from the numbers array For elements 2 to 4:

numbers.splice(2, 3); // [2, 5, 6]

Insert element

The following code will insert element 7 at index position 2 of the numbers array:

numbers.splice(2, 0, 7); // [2, 7, 5, 6]

Replace elements

The following code will replace the element at index position 1 in the numbers array with element 8:

numbers.splice(1, 1, 8); // [2, 8, 5, 6]

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