JavaScript deletes the corresponding elements in the array using the element index number.

JavaScript deletes the corresponding elements in the array using the element index number.

This example describes how to delete elements in an array using the element index number in JavaScript. Share it with you for your reference. The specific analysis is as follows:

JavaScript deletes the elements in the array using the index number of the element. to delete the first element, use RemoveValByIndex (2). The JS array starts from 0.

Function RemoveValByIndex (arr, index) {arr. splice (index, 1) ;}test = new Array (); test [0] = 'apple'; test [1] = 'ball '; test [2] = 'cat'; test [3] = 'Dog'; alert ("Array before removing elements:" + test); RemoveValByIndex (test, 2 ); alert ("Array after removing elements:" + test );

I hope this article will help you design javascript programs.