Negative and Positive Infinity in JavaScript

Positive Infinity

In Javascript, positive infinity is a number that is constant and represents the maximum possible value. It can be created with a custom function or by performing an arithmetic operation.

JavaScript shows the POSITIVE_INFINITY value as Infinity.

Syntax:

Number.POSITIVE_INFINITY

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Properties of Positive Infinity

Following are the properties of Positive Infinity:

• Negative infinity is the product of positive and negative infinity.
• We get positive 0 when we divide any positive number by positive infinity.
• When we divide any negative number by positive infinity, we get negative 0 0. When we multiply that by positive infinity, we get NaN.
• Positive infinity multiplied by NaN equals NaN.
• When we divide positive infinity by any negative number, we obtain negative infinity (except negative infinity)
• When we divide positive infinity by any positive number, we get positive infinity (except positive infinity)
• NaN is the result of dividing positive infinity by either positive or negative infinity.

Code
 

function checkNumber(bigNumber) {
    if (bigNumber === Number.POSITIVE_INFINITY) {
      return 'Process number as Infinity';
    }
    return bigNumber;
  }
 
  console.log(checkNumber(Number.MAX_VALUE));
  // expected output: 1.7976931348623157e+308
  console.log(checkNumber(Number.MAX_VALUE * 2));
  // expected output: Process number as Infinity

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Output

Check out this problem - First Missing Positive 

Frequently Asked Questions

1. What is positive infinity?
   The positive infinity property represents the highest available value.
    
2. What is the meaning of -Infinity?
   -Infinity is a numeric value that represents negative infinity. Infinity is displayed when the number exceeds the upper limit of floating-point numbers, equal to 1,779693134862315E + 308.
    
3. What is the value of Nan Multiplied by negative infinity?
   If we multiply negative infinity with NaN, we will get NaN as a result.
    
4. Why is JavaScript called a scripting language?
   JavaScript is not a programming language in a strict sense. Instead, it is a scripting language because it uses the browser to do the dirty work. If you command an image to be replaced by another one, JavaScript tells the browser to do it.

Conclusion

In this article, we have extensively discussed Negative and Positive Infinity in Javascript.

• In this blog, we have learned about positive and negative infinity.
• We have seen the properties of negative and positive infinity.
• We have seen an example code of both of them.

We hope that this blog has helped you enhance your knowledge regarding Negative and Positive Infinity. If you want to learn more, check out our Javascript Numbers and Javascript Numbers articles. Do upvote our blog to help other ninjas grow.

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