how to add values of an array in javascript code example

Example 1: javascript append to array

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

Example 2: add value to array javascript

var fruits = ["222", "vvvv", "eee", "eeee"];

fruits.push("Kiwi");

Example 3: sum all elements in array javascript

arr.reduce((a, b) => a + b)

Example 4: sum of all elements in array javascript

arrSum = function(arr){  return arr.reduce(function(a,b){    return a + b  }, 0);}

Example 5: how to make and add to an array in javascript

var arrayExample = [53,'Hello World!'];
console.log(arrayExample) //Output =>
[53,'Hello World!']

//You can also do this
arrayExample.push(true);

console.log(arrayExample); //Output =>
[53,'Hello World!',true];