將 24 小時制轉換為 12 小時制的 JavaScript 程式

以下是將 24 小時格式轉換為 12 小時格式的 JavaScript 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 {
      font-size: 18px;
      font-weight: 500;
      color: rebeccapurple;
   }
</style>
</head>
<body>
<h1>Convert 24 hours format to 12 hours</h1>
<label>Hours </label><input class="hour" type="number"></br>
<label>Minutes </label><input class="minute" type="number"><br/>
<div class="result"></div><br />
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to convert the above 24 hour format to 12 hour format</h3>
<script>
   let resEle = document.querySelector(".result");
   let BtnEle = document.querySelector(".Btn");
   let hrEle,minEle;
   BtnEle.addEventListener("click", () => {
      hrEle = document.querySelector('.hour').value;
      minEle = document.querySelector('.minute').value;
      if(hrEle>=0 && hrEle<=24 && minEle >=0 && minEle <= 60){
         let AMorPM='AM';
         if(hrEle>12)AMorPM='PM';
         hrEle = (hrEle % 12);
         resEle.innerHTML = 'TIME = '+hrEle+' : '+minEle+' '+AMorPM;
      }
   });
</script>
</body>
</html>