JavaScript: Compute the sum of three elements of a given array of integers of length 3
JavaScript Basic: Exercise-69 with Solution
Write a JavaScript program to compute the sum of three elements of a given array of integers of length 3.
Pictorial Presentation:
Sample Solution:
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JavaScript program to compute the sum of three elements of an given integers of length 3.</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function sum_three(nums)
{
return nums[0] + nums[1] + nums[2];
}
console.log(sum_three([10, 32, 20]));
console.log(sum_three([5, 7, 9]));
console.log(sum_three([0, 8, -11]));
Sample Output:
62 21 -3
Flowchart:
ES6 Version:
function sum_three(nums)
{
return nums[0] + nums[1] + nums[2];
}
console.log(sum_three([10, 32, 20]));
console.log(sum_three([5, 7, 9]));
console.log(sum_three([0, 8, -11]));
Live Demo:
See the Pen JavaScript - compute the sum of three elements of a given array of integers of length 3 - basic-ex-69 by w3resource (@w3resource) on CodePen.
Contribute your code and comments through Disqus.
Previous: Write a JavaScript program to create a new string taking the first and last n characters from a given string.
Next: Write a JavaScript program to rotate the elements left of a given array of integers of length 3.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
How to insert an item into an array at a specific index (JavaScript)?
What you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:
var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());
Ref: https://bit.ly/2BXbp04
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework