INFINITY - Global Object in JavaScript

[RAMANA MURTHY G]

Hello folks,

It’s all about Infinity in JavaScript.

Wait, what is INFINITY?? Ugh??

In JavaScript, INFINITY is a special numeric value that represents Positive Infinity. It is greater than any other number and is a part of the Global Scope (Global Variable). There is also -INFINITY, which represents Negative Infinity.

INFINITY behaves similarly to mathematical Infinity. It is typically the result of a number exceeds the largest representable number in JavaScript or when you divide a non-zero number by Zero.

INFINITY is a property of global object just like NaN or undefined

e.g.:

gs.info(1/0);        // which prints INFINITY

gs.info(-1/0);       // which prints -INFINITY

let's assume another example. I wanted to find a maximum element in an array [3, 4, 5, 2, 7, 1];

var number = [3, 4, 5, 2, 7, 1];

let max = -Infinity;     // negative infinity

for (let i = 0; i < number.length; i++) {
  if (number[i] > max) {
    max = number[i];
  }
}
gs.info("Largest number is:", max);

// Output: Largest number is: 7

Note: We use -INFINITY so that any number in the array will be greater than the initial max.

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Thank you

Ramana Murthy G

ServiceNow Developer.