如何在 JavaScript 中打印正负无穷大值？

以下是 JavaScript 中打印正负无穷大值的代码 −

示例

 实时演示

<!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;
   }
   .num {
      font-size: 18px;
      font-weight: 500;
   }
</style>
</head>
<body>
<h1>JavaScript Infinity property</h1>
<div class="num">1.797693134862315E+10308</div>
<div class="num">-1.797693134862315E+10308</div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to add and subtract the above floating numbers by 1 respectively
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let num1 = document.querySelectorAll(".num")[0];
   let num2 = document.querySelectorAll(".num")[1];
   document.querySelector(".Btn").addEventListener("click", () => {
      num1.innerHTML = +num1.innerHTML + 1;
      num2.innerHTML = +num2.innerHTML - 1;
   });
</script>
</body>
</html>

输出

上述代码将产生以下输出 −

单击“单击此处”按钮 −

更新于： 2020-07-15

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