代码如下： <!--第一步:把如下代码加入<head>区域中--> <script Language="JavaScript"> <!-- Helpers for JSI page... function goback(){ alert("Good Bye!"); history.go(-1); } function getname(str) { alert("Hi, "+ str+"!"); } function gettheDate() { stopclock(); Todays = new Date(); TheDate = "" + (Todays.getMonth()+ 1) +"-"+ Todays.getDate() + "-" + Todays.getYear() document.clock.face.value = TheDate; } function showit () { var now = new Date(); var hours = now.getHours(); var minutes = now.getMinutes(); var seconds = now.getSeconds(); stopclock(); TotalTime = (minutes > GetTotal)? (minutes-GetTotal):TotalTime; document.clock.face.value = TotalTime + " in minutes "; } var timerID = null; var TotalTime = 0; var GetTotal = 0; var timerRunning = false; function stopclock (){ if(timerRunning) clearTimeout(timerID); timerRunning = false; } function startclock () { var now = new Date(); stopclock(); GetTotal=now.getMinutes(); gettheDate() showtime(); } function showtime () { var now = new Date(); var hours = now.getHours(); var minutes = now.getMinutes(); var seconds = now.getSeconds() var timeValue = "" + ((hours >12) ? hours -12 :hours) timeValue += ((minutes < 10) ? ":0" : ":") + minutes timeValue += ((seconds < 10) ? ":0" : ":") + seconds timeValue += (hours >= 12) ? " P.M." : " A.M." document.clock.face.value = timeValue; timerID = setTimeout("showtime()",1000); timerRunning = true; } function showtimer () { var now = new Date(); var hours = now.getHours(); var minutes = now.getMinutes(); var seconds = now.getSeconds() var timeValue = "" + ((hours >12) ? hours -12 :hours) timeValue += ((minutes < 10) ? ":0" : ":") + minutes timeValue += ((seconds < 10) ? ":0" : ":") + seconds timeValue += (hours >= 12) ? " P.M." : " A.M." document.clock.Tspent.value = timeValue; timerID = setTimeout("showtime()",1000); timerRunning = true; } --> </script> <!--第二步:把如下代码加入<body>区域中--> <form name="clock" onSubmit="0"> <input type=button value="Time" size=12 onClick="showtime()"> <input type=button value="Date" size=12 onClick="gettheDate()"> <input type="text" name="face" size=12 value="" StartTimer()> </form> <!--第三步:把<body>区中内容改为--> <body onLoad="startclock()">
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