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What is positive infinity in JavaScript ?

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The positive infinity in Javascript is a number that is constant and represents a value that is the highest available. It can be generated using a self-made function or by an arithmetic operation.

Note: JavaScript shows the POSITIVE_INFINITY value as Infinity.

Positive Infinity: It is different from mathematical infinity in the following ways.

  • If we divide any positive number by positive infinity, we will get a positive 0
  • If we divide any negative number by positive infinity, we will get negative 0.
  • 0 multiplied by positive infinity is NaN
  • NaN multiplied by positive infinity is NaN
  • We get negative infinity when we divide positive infinity by any negative number (except negative infinity)
  • We get positive infinity when we divide positive infinity by any positive number (except positive infinity)
  • Positive infinity divided by either positive or negative infinity is NaN

Syntax: 

Number.POSITIVE_INFINITY

Example 1: 

html




<body>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    <h3>
        What is positive infinity in JavaScript?
    </h3>
    <button onclick="geekPositiveInfinity()">
        Generate positive infinite
    </button>
    <p id="geek"></p>
    <script>;
        function geekPositiveInfinity() {
            var n=(Number.MAX_VALUE)*2;
            document.getElementById("geek").innerHTML=
              "Here the number generated is twice of Number.MAX_VALUE"+"<br>"+ 
              " which is greater than upper limit"+"<br><br>"+n;
        }
    </script>
</body>


Output: 

Positive Infinity in JavaScript

 Example 2: 

HTML




<body>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    <h3>
        Positive infinity in JavaScript
    </h3>
    <h4>Operations with positive infinity</h4>
    <ol>
        <li id="divide">
            <b>Divide any number by Positive infinity</b>
            <br>
            561 / Number.POSITIVE_INFINITY =
        </li>
        <br>
        <li id="divideNeg">
            <b>Divide negative number by infinity</b>
            <br> -123 / Number.POSITIVE_INFINITY =
        </li>
        <br>
        <li id="mulzero">
            <b>0 multiply by Positive infinity</b>
            <br>
            0 * Number.POSITIVE_INFINITY =
        </li>
        <br>
        <li id="nanmul">
            <b>NAN multiply by Positive infinity</b>
            <br>
            NAN * Number.POSITIVE_INFINITY =
        </li>
        <br>
        <li id="dividepos">
            <b>Divide Positive infinity by Negative number(except Negative Infinity)</b>
            <br>
            Number.POSITIVE_INFINITY / -123 =
        </li>
        <br>
        <li id="divideposinf">
            <b>Divide Positive infinity by Positive number</b>
            <br>
            0 / Number.POSITIVE_INFINITY =
        </li>
        <br>
        <li id="divideself">
            <b>Divide Positive infinity by Positive Infinity or Negative infinity</b>
            <br>
            Number.POSITIVE_INFINITY / Number.POSITIVE_INFINITY =
        </li>
    </ol>
    <button onclick="calc()">Click Here to calculate</button>
    <script>
        function calc() {
            document.getElementById("divide").innerHTML+=561/Number.POSITIVE_INFINITY;
            document.getElementById("divideNeg").innerHTML+=-123/Number.POSITIVE_INFINITY;
            document.getElementById("mulzero").innerHTML+=0*Number.POSITIVE_INFINITY;
            document.getElementById("nanmul").innerHTML+=NaN*Number.POSITIVE_INFINITY;
            document.getElementById("dividepos").innerHTML+=Number.POSITIVE_INFINITY/-123;
            document.getElementById("divideposinf").innerHTML+=0/Number.POSITIVE_INFINITY;
            document.getElementById("divideself").innerHTML+=Number.POSITIVE_INFINITY/Number.POSITIVE_INFINITY;
        }
    </script>
</body>


Output:

Positive Infinity in JavaScript

Recommended Article: JavaScript Infinity Property



Last Updated : 09 Dec, 2022
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