JavaScript method to delete corresponding elements in an array through element index number

This article describes the JavaScript method of deleting corresponding elements in an array through element index numbers. Share it for your reference. The specific analysis is as follows:

JavaScript deletes elements in the array through the index number of the element. If you want to delete the third element, use RemoveValByIndex(2) and 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);

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