Description:
This method returns the natural logarithm (base E) of a number. If the value of number is negative, the return value is always NaN.
Syntax:
Math.log( x ) ; |
- x : A numbers.
Return Value:
Returns the natural logarithm (base E) of a number.Example:
<html>
<head>
<title>JavaScript Math log() Method</title>
</head>
<body>
<script type="text/javascript">
var value = Math.log(10);
document.write("First Test Value : " + value );
var value = Math.log(0);
document.write("<br />Second Test Value : " + value );
var value = Math.log(-1);
document.write("<br />Third Test Value : " + value );
var value = Math.log(100);
document.write("<br />Fourth Test Value : " + value );
</script>
</body>
</html>
|
First Test Value : 2.302585092994046 Second Test Value : -Infinity Third Test Value : NaN Fourth Test Value : 4.605170185988092
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