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JavaScript: Check two given integers, whether one is positive and another one is negative

JavaScript Basic: Exercise-20 with Solution

Write a JavaScript program to check from two given integers, whether one is positive and another one is negative.

Pictorial Presentation:

JavaScript: Check two given integers, one is positive and one is negative

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to  check from two given integers, whether one is positive and another one is negative.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function positive_negative(x, y)
{
  if ((x < 0 && y > 0) || x > 0 && y < 0) 
  {
    return true;
  }
  else 
  {
    return false;
  }
}
console.log(positive_negative(2, 2));
console.log(positive_negative(-2, 2));
console.log(positive_negative(2, -2));
console.log(positive_negative(-2, -2));

Sample Output:

false
true
true
false

Flowchart:

Flowchart: JavaScript - Check two given integers, whether one is positive and another one is negative

ES6 Version:

function positive_negative(x, y)
{
  if ((x < 0 && y > 0) || x > 0 && y < 0) 
  {
    return true;
  }
  else 
  {
    return false;
  }
}
console.log(positive_negative(2, 2));
console.log(positive_negative(-2, 2));
console.log(positive_negative(2, -2));
console.log(positive_negative(-2, -2));

Live Demo:

See the Pen JavaScript: positive negative number: basic-ex-20 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript program to create a new string adding "Py" in front of 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