標籤：ack charset date() 暫停 function 一個 val button round
在javascript中利用 setInterval clearInterval定時 方法去控制顯示時間的增加
1 <!DOCTYPE html> 2 <html> 3 4 <head> 5 <meta charset="UTF-8"> 6 <title>頁面時鐘</title> 7 <script type="text/javascript" src="js/jquery-3.2.1.js"></script> 8 </head> 9 10 <body>11 <!--<input type="button" id="button1"value="OK" />12 <img src="img/00000.jpg" />-->13 <!--添加一個文字框顯示時間，兩個按鈕去控制時間的開始和暫停-->14 <input type="text" size="30" id="one" /><br />15 <input type="button" id="two" value="開始" onclick="fun1()" />16 <input type="button" id="three" value="結束" onclick="fun2()" />17 18 </body>19 20 </html>21 <script type="text/javascript">22 //控制文字框中的內容23 // document.getElementById("one").value="123";24 var id;25 26 function fun1() {27 //確保只開啟一個定時器28 setTime();29 30 if(!id) {31 32 id = window.setInterval(setTime, 1000);33 }34 }35 36 function setTime() {37 var date = new Date();38 document.getElementById("one").value = date.toLocaleString();39 }40 //停止時鐘41 function fun2() {42 43 clearInterval(id);44 id = undefined;45 }46 </script>
利用setInterval製作網頁計時器
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