**Angular** is a front-end framework used to develop web applications. Angular uses the Javascript language as a development tool and converts the code into a web application. If a button click enables a user to splice an array, we use the `onClick` function of that button and write our code in that function.

# What does splice do?
**`splice`** is a function that splices an array. Splicing an array means that it divides the array into two portions and takes these three types of parameters:
* starting index of an array
* the number of elements to remove
* elements to be added
```Javascript
array.splice(startIndex, numberOfElementsToRemove, numberToBeAdded).
```
> The last parameter is optional 

Keep in mind that we can use `array.splice` to actually add, remove, or replace elements in an array.



# Splicing an array to add elements in that array

The following function is an `onClick` function in Angular that is used to add elements in an array after the third index:

function onClickAdd(array) {
  //starting index 3, 0 elements to remove and add 4 in the array
  array.splice(3, 0, 4);

  return array;
}

var array = [1, 2, 3];
onClickAdd(array);
console.log(array);

# Splicing an array to remove elements in that array

The following function is an `onClick` function in Angular that is used to remove elements in an array after the first index:

function onClickRemove(array) {
  //starting index 1, 2 elements to remove and add nothing in the array
  array.splice(1, 2);
  return array;
}

var array = [1, 2, 3];
onClickRemove(array);
console.log(array);

# Splicing an array to replace elements in that array

The following function is an `onClick` function in Angular that is used to replace elements in an array after the first index:

function onClickReplace(array) {
  //starting index 1, 2 elements to remove and add 11 and 111 in the array
  array.splice(1, 2, 11, 111);
  return array;
}

var array = [1, 2, 3];
onClickReplace(array);
console.log(array);

How to use splice in Angular

To use splice in Angular, implement the `array.splice` function within an onClick function to add, remove, or replace array elements.