Math.log() is a function in math library of JavaScript that is used to return the value of natural Log i.e. (base e) of the given number. It is also known as ln(x) in mathematical terms.
Math.log()是JavaScript数学库中的函数,用于返回给定数字的自然Log值(即e的底数 )。 它在数学上也称为ln(x) 。
Syntax:
句法:
Math.log(value);
Parameter(s):
参数:
value – It represents the value for which natural log is to be found.
值 –它表示要找到自然对数的值。
Return value:
返回值:
The return type of this method is number, it returns a number value which is loge(value).
此方法的返回类型为number ,它返回一个数字值log e (值) 。
Values accepted: Integer, floating-point, numeric string.
接受的值:整数,浮点数,数字字符串。
Invalid Values: non-numeric string, empty variable, empty array all will return NaN (Not a Number).
无效值:非数字字符串,空变量,空数组都将返回NaN(非数字)。
Browser support: Chrome, Internet asinlorer, Mozilla, Safari, Opera mini.
浏览器支持: Chrome,Internet代理,Mozilla,Safari,Opera mini。
Example 1: Valid values
示例1:有效值
console.log(Math.log(5));
console.log(Math.log(3.14));
console.log(Math.log(0));
console.log(Math.log("0.65"));
Output
输出量
1.6094379124341003
1.144222799920162
-Infinity
-0.4307829160924542
Example 2: Invalid values
示例2:无效值
console.log(Math.log("Javascript"));
console.log(Math.log(-1));
Output
输出量
NaN
NaN
翻译自: https://www.includehelp.com/code-snippets/math-log-method-with-example-in-javascript.aspx