Javascript Function To Remove Array element by Index

function removeByIndex(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);

 

removeByIndex(test, 2);

 

alert("Array after removing elements: "+test);