Math.log( ) In JavaScript

The Math.log() function in JavaScript is used to return the natural logarithm (base e) of a number. The JavaScript Math.log() function is equivalent to ln(x) in mathematics.
If the value of x is negative, then math.log() function return NaN.
log() is a static method of Math, therefore, it is always used as Math.log(), rather than as a method of a Math object created.

Syntax:

Math.log(value)

Parameters: this function accepts a single parameter value which is a number whose natural logarithm you want to find.

Returns: The Math.log() function returns the natural logarithm given number.

Examples:

• When zero is passed as a parameter.
  filter_none

  edit
  close

  play_arrow

  link
  brightness_4
  code

  <script type="text/javascript">    document.write("Output : " + Math.log(0)); </script>

  chevron_right

  filter_none

  Output:

  Output : -Infinity

• When “-1” is passed as a parameter.
  filter_none

  edit
  close

  play_arrow

  link
  brightness_4
  code

  <script type="text/javascript">    document.write("Output : " + Math.log(-1)); </script>

  chevron_right

  filter_none

  Output:

  Output : NaN

• When “10” is passed as a parameter.
  filter_none

  edit
  close

  play_arrow

  link
  brightness_4
  code

  <script type="text/javascript">    document.write("Output : " + Math.log(10)); </script>

  chevron_right

  filter_none

  Output:

  Output : 2.302585092994046

• Calculating Math.log() with a different base.
  For finding the logarithm of 8 with base 2,execute the math.log() function in the following way:
  filter_none

  edit
  close

  play_arrow

  link
  brightness_4
  code

  <script type="text/javascript">    document.write("Output : " + Math.log(8)/Math.log(2)); </script>

  chevron_right

  filter_none

  Output:

  Output : 3

Supported Browsers: The browsers supported by JavaScript Math.log( ) function are listed below:

• Google Chrome
• Internet Explorer
• Firefox
• Opera
• Safari



My Personal Notes arrow_drop_up
Save

Recommended Posts: