什麼是 JavaScript 型別強制轉換？

型別強制轉換是指將一種資料型別自動或隱式轉換為另一種資料型別的操作。

以下是 JavaScript 型別強制轉換的程式碼 −

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;
   }
   .result,.sample {
      font-size: 20px;
      font-weight: 500;
   }
</style>
</head>
<body>
<h1>JavaScript type coercion</h1>
<div class="sample">22</div>
<div style="color: green;" class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to add the above number with 5.</h3>
<script>
   let sampleEle = document.querySelector('.sample');
   let resEle = document.querySelector(".result");
   document.querySelector(".Btn").addEventListener("click", () => {
      resEle.innerHTML = ' "22" + 5 = ' + sampleEle.innerHTML+5;
   });
</script>
</body>
</html>