How to find logarithm in JavaScript

Method for finding logarithms: 1. Use the LN2 attribute and the syntax "Math.LN2" to return the natural logarithm of 2; 2. Use the LN10 attribute and the syntax "Math.LN10"; 3. Use LOG2E Attribute, syntax "Math.LOG2E"; 4. Use log() method, syntax "Math.log(x)".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

JavaScript method of finding logarithms:

1. Use the LN2 attribute of the Math object

## The #LN2 attribute is

, which returns the natural logarithm of 2 (approximately equal to 0.693), and its value is approximately 0.69314718055994528623.

Syntax:

Math.LN2

2. Use the LN10 attribute of the Math object

LN10 attribute is

, Returns the natural logarithm of 10 (approximately 2.302), which is approximately 2.3025850929940459011.

Grammar:

Math.LN10

3. Use the LOG2E attribute of the Math object

The LOG2E attribute is log2e and can be returned The logarithm of e with base 2 (approximately equal to 1.4426950408889634)

Syntax:

Math.LOG2E

4. Use the LOG10E attribute of the Math object

LOG10E attribute is

, which can return the logarithm of e with base 10 (approximately equal to 0.434).

Grammar:

Math.LOG10E

5. Use the log() method of the Math object

log() method can Returns the natural logarithm of a number (based on E).

Syntax:

Math.log(x)

x: required. Any number or expression.​

• If x is a negative number, return NaN.

• If x is 0, return -Infinity.

Example:

Math.log(2);

Outputable:

0.6931471805599453

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