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JavaScript: Check whether the last digit of the three given positive integers is same

JavaScript Basic: Exercise-36 with Solution

Write a JavaScript program to check whether the last digit of the three given positive integers is same.

Pictorial Presentation:

JavaScript: Check whether the last digit of the three given positive integers is same

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to check whether the last digit of the three given positive integers is same.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function last_digit(x, y, z)
{
  if ((x > 0) && y > 0 && z > 0)
    {
     return (x % 10 == y % 10 && y % 10 == z % 10 && x % 10 == z % 10);
   }
  else
    return false;
}

console.log(last_digit(20, 30, 400));
console.log(last_digit(-20, 30, 400));
console.log(last_digit(20, -30, 400));
console.log(last_digit(20, 30, -400));

Sample Output:

true
false
false
false

Flowchart:

Flowchart: JavaScript - Check whether the last digit of the three given positive integers is same

ES6 Version:

function last_digit(x, y, z)
{
  if ((x > 0) && y > 0 && z > 0)
    {
     return (x % 10 == y % 10 && y % 10 == z % 10 && x % 10 == z % 10);
   }
  else
    return false;
}

console.log(last_digit(20, 30, 400));
console.log(last_digit(-20, 30, 400));
console.log(last_digit(20, -30, 400));
console.log(last_digit(20, 30, -400));

Live Demo:

See the Pen JavaScript: check whether the last digit of the three given positive integers is same - basic-ex-36 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript program to create a new string with first 3 characters are in lower case from a given string.

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JavaScript: Tips of the Day

Parameter's value

function getItems(fruitList, ...args, favoriteFruit) {
  return [...fruitList, ...args, favoriteFruit]
}

getItems(["banana", "apple"], "pear", "orange")

...args is a rest parameter. The rest parameter's value is an array containing all remaining arguments, and can only be the last parameter! In this example, the rest parameter was the second parameter. This is not possible, and will throw a syntax error.

function getItems(fruitList, favoriteFruit, ...args) {
  return [...fruitList, ...args, favoriteFruit];
}


getItems(['banana', 'apple'], 'pear', 'orange');
The above example works. This returns the array [ 'banana', 'apple', 'orange', 'pear' ].

Ref: https://bit.ly/3jFRBje