array splice method js code example

Example 1: javascript splice

let arr = ['foo', 'bar', 10, 'qux'];

// arr.splice(<index>, <steps>, [elements ...]);

arr.splice(1, 1);			// Removes 1 item at index 1
// => ['foo', 10, 'qux']

arr.splice(2, 1, 'tmp');	// Replaces 1 item at index 2 with 'tmp'
// => ['foo', 10, 'tmp']

arr.splice(0, 1, 'x', 'y');	// Inserts 'x' and 'y' replacing 1 item at index 0
// => ['x', 'y', 10, 'tmp']

Example 2: splice javascritp

let colors = ['red', 'blue', 'green'];

let index_element_to_be_delete = colors.indexOf('green');

colors.splice(index_element_to_be_delete); 

//Colors now: ['red', 'blue']

Example 3: splice javascript

const numbers = [10, 11, 12, 12, 15];
const startIndex = 3;
const amountToDelete = 1;

numbers.splice(startIndex, amountToDelete, 13, 14);
// the second entry of 12 is removed, and we add 13 and 14 at the same index
console.log(numbers);
// returns [ 10, 11, 12, 13, 14, 15 ]

Example 4: 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);