JAVASCRIPT

JavaScript Array splice()

// The splice() method can be used to add new items to an array:
const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.splice(2, 0, "Lemon", "Kiwi");
 // >> ["Banana", "Orange", "Lemon", "Kiwi", "Apple", "Mango"]

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array.splice javascript

const months = ['Jan', 'March', 'April', 'June'];
months.splice(1, 0, 'Feb');
// inserts at index 1
console.log(months);
// expected output: Array ["Jan", "Feb", "March", "April", "June"]

months.splice(4, 1, 'May');
// replaces 1 element at index 4
console.log(months);
// expected output: Array ["Jan", "Feb", "March", "April", "May"]

months.splice(0, 1);
// removes 1 element at index 0
console.log(months);
// expected output: Array ["Feb", "March", "April", "May"]

array.splice

let arr = [1,2,3]

// delete elements:
arr.splice(/*starting index*/, /*number of elements to delete*/)

// delete and replace elements:
arr.splice(/*starting index*/, /*number of elements to delete*/, /* value(s) to replace what was deleted */)

Array#splice

let arrDeletedItems = array.splice(start[, deleteCount[, item1[, item2[, ...]]]])

array splice

var arrayElements = [1,2,3,4,2];

console.log(arrayElements);

//[1, 2, 3, 4, 2] 

arrayElements.forEach((element,index)=>{
   if(element==2) arrayElements.splice(index,1);
});

console.log(arrayElements);

//[1, 3, 4]