In JavaScript, you can use the pow() method to calculate the power of 2. This method is used to calculate the power of a specified number. When the parameter is set to 2, you can calculate the power of 2. The second parameter of this function is used to set the power, and the syntax is "Math.pow(2, power)".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
The pow() method returns the y power of x.
The syntax is:
Math.pow(x,y)
x Required. base. Must be a number.
y Required. Power number. Must be a number.
Return value
Number The result is x raised to the y power.
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2的4次方结果。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
document.getElementById("demo").innerHTML=Math.pow(2,4);
}
</script>
</body>
</html>Output result:
After clicking the button:
Related recommendations: javascript learning tutorial
The above is the detailed content of How to calculate the power of 2 in javascript. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
