javascript insert to array code example

Example 1: javascript append to array

var colors=["red","white"];
colors.push("blue");//append 'blue' to colors

Example 2: insert into array js

// for me lol... pls don't delete!
// use splice to insert element
// arr.splice(index, numItemsToDelete, item); 
var list = ["hello", "world"]; 
list.splice( 1, 0, "bye"); 
//result
["hello", "bye", "world"]

Example 3: push array javascript

let array = ["A", "B"];
let variable = "what you want to add";

//Add the variable to the end of the array
array.push(variable);

//===========================
console.log(array);
//output =>
//["A", "B", "what you want to add"]

Example 4: how to insert a value into an array javascript

var list = ["foo", "bar"];


list.push("baz");


["foo", "bar", "baz"] // result