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What does log in javascript mean?

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Release： 2021-12-07 11:47:53
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Log in JavaScript means "logarithm" and is a method of the Math object. The syntax is "Math.log(x)"; the log() method can return the natural logarithm of the number "x". If the parameter value is a negative number, the return result is "NaN". If the parameter value is 0, the return result is "-Infinity".

What does log in javascript mean?

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

What is the meaning of log in JavaScript

log in JavaScript means "logarithm", the log() method returns the natural value of a number Logarithm (base E).

The syntax of this method is as follows: 

Math.log(x)
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If the parameter x is a negative number, NaN will be returned. If parameter x is 0, then -Infinity is returned. The result returned is the natural logarithm of x.

The example is as follows: 

<html>
<head>
<meta charset="utf-8">
<title>123</title>
</head>
<body>
<p id="demo">单击按钮显示不同数值的自然对数。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
var a=Math.log(2.7183);
var b=Math.log(2);
var c=Math.log(1);
var d=Math.log(0);
var e=Math.log(-1);
var x=document.getElementById("demo");
x.innerHTML=a + "<br>" + b + "<br>" + c + "<br>" + d + "<br>" + e
}
</script>
</body>
</html>
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Output result:

What does log in javascript mean?

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