js splice to replace code example

Example 1: remove or replacing element array in javascript

let myFish = ['angel', 'clown', 'mandarin', 'sturgeon']
let removed = myFish.splice(2, 0, 'drum')

// myFish is ["angel", "clown", "drum", "mandarin", "sturgeon"] 

let words: string[] = [
  'What',
  'I',
  'do',
  'create,',
  'I',
  'cannot',
  'not',
  'understand.',
];

let newWords = words.splice(2, 1, 'cannot');
let newWords2 = words.splice(5, 2, 'do not');
//console.log(newWords);
console.log(words.join(' '));

//What I cannot create, I do not understand.

Example 2: splice typescript array

var arr = ["orange", "mango", "banana", "sugar", "tea"];  
var removed = arr.splice(2, 0, "water");  
console.log("After adding 1: " + arr );  
console.log("removed is: " + removed); 
          
removed = arr.splice(3, 1);  
console.log("After removing 1: " + arr );  
console.log("removed is: " + removed);