JavaScript 数学对象示例

javascriptweb developmentobject oriented programming更新于 2025/12/11 12:28:17

JavaScript 数学对象允许我们对数字执行数学运算。它具有数学常量和函数的属性和方法。

以下是实现 JavaScript 数学对象及其部分属性和方法的代码 −

示例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .sample {
      font-size: 18px;
      font-weight: 500;
      color: red;
   }
</style>
</head>
<body>
<h1>JavaScript Math Object</h1>
<div class="sample"></div>
<div style="font-weight: bold; color: black;" class="result"></div>
<button class="btn">点击此处</button>
<h3>
Click on the above button to see some math Object methods
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   document.querySelector(".Btn").addEventListener("click", () => {
      sampleEle.innerHTML = 'Math.round(7.7) = ' + Math.round(7.7) + '<br>';
      sampleEle.innerHTML += 'Math.sqrt(121) = ' + Math.sqrt(121) + '<br>';
      sampleEle.innerHTML += 'Math.pow(4,4) = ' + Math.pow(4,5) + '<br>';
   });
</script>
</body>
</html>