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JavaScript: Compute the sum and product of an array of integers

JavaScript Array: Exercise-12 with Solution

Write a JavaScript program to compute the sum and product of an array of integers.

Pictorial Presentation:

JavaScript: Compute the sum and product of an array of integers

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Compute the sum and product of an array of integers</title>
</head>
<body>
</body>
</html>

JavaScript Code:

var array = [1, 2, 3, 4, 5, 6],
    s = 0,
    p = 1,
    i;
for (i = 0; i < array.length; i += 1) 
   {
    s += array[i];
    p *= array[i];
    }
console.log('Sum : '+s + ' Product :  ' +p); 

Sample Output:

Sum : 21 Product :  720

Flowchart:

Flowchart: JavaScript: Display the colors entered in an array by a specific format

ES6 Version:

const array = [1, 2, 3, 4, 5, 6];
let s = 0;
let p = 1;
let i;
for (i = 0; i < array.length; i += 1) 
   {
    s += array[i];
    p *= array[i];
    }
console.log(`Sum : ${s} Product :  ${p}`); 

Live Demo:

See the Pen avaScript - sum and product of an array of integers- array-ex- 12 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Converts a string to title case

Example:

const toTitleCase = str =>
  str
    .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
    .map(x => x.charAt(0).toUpperCase() + x.slice(1))
    .join(' ');
console.log(toTitleCase('some_database_field_name')); // 'Some Database Field Name'
console.log(toTitleCase('Some label that needs to be title-cased')); // 'Some Label That Needs To Be Title Cased'
console.log(toTitleCase('some-package-name')); // 'Some Package Name'
console.log(toTitleCase('some-mixed_string with spaces_underscores-and-hyphens')); // 'Some Mixed String With Spaces Underscores And Hyphens' 

Output:

"Some Database Field Name"
"Some Label That Needs To Be Title Cased"
"Some Package Name"
"Some Mixed String With Spaces Underscores And Hyphens"