javascript add numbers to array code example

Example 1: adding numbers in an array javascript

console.log(
  [].reduce((a, b) => a + b)
)

Example 2: javascript pushing to an array

some_array = ["John", "Sally"];
some_array.push("Mike");

console.log(some_array); //output will be =>
["John", "Sally", "Mike"]

Example 3: javascript sum of array

const sum = arr => arr.reduce((a, b) => a + b, 0);

Example 4: add all elements in array javascript

console.log(
  [1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
  [].reduce((a, b) => a + b, 0)
)

Example 5: add numbers from array nodejs

//these are the values//
var values = [
	'1',
  	'2'
]
//makes a variable named total, adding together the values
var total = values[0] + values[1]

//prints out the variable named total
console.log(total);

Example 6: javascript append to array

arr = [1, 2, 3, 4]
arr.push(5) // adds element to end

arr.unshift(0) // adds element to beginning