案例：利用JS動態的顯示當前時間
阿新 • • 發佈：2019-01-23
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>無標題文件</title> </head> <body> <input type="text" id="showTime"/> <input type="button" onclick="clock()" value="getNowTime"/> <script type="text/javascript"> function clock(){ //分別獲取時分秒 var date = new Date(); var hours = date.getHours(); var minu = date.getMinutes(); var sed = date.getSeconds(); //檢查時間為個位數時，前面加0，如9---09 hours = check(hours); minu = check(minu); sed = check(sed); var strDate = hours + ":" + minu + ":" + sed; var textTime = document.getElementById("showTime"); //進行清空 textTime.value = ""; textTime.value = strDate; //計時器，每500ms重新整理一次 window.setTimeout("clock()","500"); } function check(date){ if (0<=date && date <=9){ date = "0" + date; return date; } else{ return date; } } </script> </body> </html>