sum += arr[i]; Output: Just another kind of loop in Javascript. Here’s how to make use of it to calculate the total value of a given array: let sum = 0; result += e; console. log (result); Output: We’ve walked through several ways to get the sum of all elements of a given array in Javascript.

total += Number(input[i]); // Return the total sum. return total; // Output the sum of the numbers in the array [1, 2, 3] to the console. // Output the sum of the numbers in the array [100, -200, 3] to the console. // Output the sum of the numbers in the array [1, 2, 'a', 3] to the console.

In this tutorial we will create a Auto Calculate Total using JavaScript. This code will automatically the given number when the user enter it in the form field. The code use onkeyup () to call a method that can will calculate immediately the inputted number by calling autoCalculate () function.

Write a JavaScript function to calculate the sum of values in an array. // Define a function named sum that calculates the sum of an array of numbers. // Check if the input is an array, if not, return false. if (toString.call(input) !== "[object Array]") return false; var total = 0; // Iterate through the input array and sum the numeric elements.