Array.sum Javascript Code Example

Example 1: array sum javascript

const arr = [1, 2, 3, 4]; const sum = arr.reduce((a, b) => a + b, 0); // sum = 10

Example 2: js sum of array

[1, 2, 3, 4].reduce((a, b) => a + b, 0)  // Output: 10

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: sum of all numbers in an array javascript

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

Example 6: javascript sum array values

function getArraySum(a){     var total=0;     for(var i in a) {          total += a[i];     }     return total; }  var payChecks = [123,155,134, 205, 105];  var weeklyPay= getArraySum(payChecks); //sums up to 722