JavaScript Math.log() Method

　JavaScript Math Object

Math.log()The method returns the natural logarithm (base e) of a number.

The JavaScript Math.log() function is mathematically equivalent toln(x).

If the passed parameter is negative, the return value is always NaN.

If the passed parameter is 0, the return value is always-Infinity.

Since log() is a static method of Math, you always use it asMath.log(), rather than as a method of the created Math object.

Syntax:

Math.log(x)

Math.log(-1;　　　//　NaN, out of range
Math.log(0);//　-Infinity
Math.log(1;//　0
Math.log(10;　　　//　2.302585092994046

Browser Compatibility

All browsers fully support the Math.log() method:

Parameter Value

Technical Details

　JavaScript Math Object