JavaScript 数字函数

JavaScript Number() 函数将作为参数传递的对象值转换为其相应的数值。

以下是 JavaScript Number() 函数的代码 -

实例

<!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 Number Function</h1>
<div class="sample"></div>
<div style="font-weight: bold; color: black;" class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above to convert some value to their respective numeric value
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   document.querySelector(".Btn").addEventListener("click", () => {
      sampleEle.innerHTML = 'true = ' + Number(true) +'<br>';
      sampleEle.innerHTML += 'false = ' + Number(false) + '<br>';
      sampleEle.innerHTML += '"149" = ' + Number('149') + '<br>';
      sampleEle.innerHTML += 'date = ' + Number(new Date()) + '<br>';
   });
</script>
</body>
</html>