How jquery deletes arrays with splice

This article mainly introduces "jquery how to delete arrays with splice" related knowledge, editor through the actual case to show you the operation process, the method of operation is simple and fast, practical, I hope that this "jquery how to delete arrays with splice" article can help you solve the problem.

In jquery, you can delete the array using the "array .splice (index,howmany)" method; the parameter index is used to specify where to delete the element, and the parameter howmany is used to specify how many elements should be deleted. If this parameter is not set, all elements from the beginning of the index to the end of the array are deleted.

The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.

How to delete an array with splice in jquery

The splice () method is used to add or remove elements from an array.

This method changes the original array.

If you delete an element, an array of elements is returned. If no elements are deleted, an empty array is returned.

The syntax is:

Array.splice (index,howmany,item1,.,itemX)

Index is required. Specifies where to add / remove elements. This parameter is the subscript of the array element that starts to be inserted and / or deleted, and must be a number.

Howmany is optional. Specifies how many elements should be deleted. Must be a number, but can be "0". If this parameter is not specified, all elements from the beginning of index to the end of the original array are deleted.

Item1,..., itemX is optional. New elements to add to the array

Examples are as follows:

123 Click buttons to add and remove elements.