JavaScript 数字示例

javascriptweb developmentobject oriented programming更新于 2025/12/13 9:48:17

以下是 JavaScript 中数字的示例 −

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 Numbers</h1>
<div class="sample"></div>
<button class="btn">点击此处</button>
<h3>
Click on the above button to see numbers in JavaScript
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let a =22;
   let b = 1.523;
   let c = 99;
   document.querySelector(".Btn").addEventListener("click", () => {
      sampleEle.innerHTML = 'a = ' + a + '<br>';
      sampleEle.innerHTML += 'b =' + b + '<br>';
      sampleEle.innerHTML += 'c = ' + c + '<br>';
      sampleEle.innerHTML += 'a + c = ' + (a+c) + '<br>';
   });
</script>
</body>
</html>