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Introduction to the use of POSITIVE_INFINITY value in JavaScript_Basic knowledge

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2016-05-16 15:56:281590browse

This is a special value that represents any value greater than Number.MAX_VALUE. This value is represented as "infinity". This value is similar to infinity in its mathematics. For example, anything multiplied by POSITIVE_INFINITY results in POSITIVE_INFINITY, and anything divided by POSITIVE_INFINITY results in zero.

Because POSITIVE_INFINITY is a constant, it is a read-only property.
Grammar

You can access properties using the following syntax: 

var val = Number.POSITIVE_INFINITY;

Example:

Here is an example illustrating the usage of this attribute: 

<html>
<head>
<script type="text/javascript">
<!--
function showValue()
{
  var bigNumber = Number.MAX_VALUE * 2
  if (bigNumber == Number.POSITIVE_INFINITY) {
   alert("Value of bigNumber : " + bigNumber );
  }
}
//-->
</script>
</head>
<body>
<p>Click the following to see the result:</p>
<form>
<input type="button" value="Click Me" onclick="showValue();" />
</form>
</body>
</html>

This will produce the following results: 

Value of val : Infinity

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