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■ 語法主題：動態時鐘

■ 控制碼內容：
將下面複製至 <body> 標籤後

<SCRIPT>
<!-- hide from non JS browsers.

//Define a couple of global variables.

var timerID = null

var timerRunning = false

function stopTimer(){

//stop the clock

if(timerRunning) {

clearTimeout(timerID)

timerRunning = false

}

function startTimer(){

// Stop the clock (in case it's running), then make it go.

stopTimer()

runClock()

}

function runClock(){

document.clock.face.value = timeNow()

//Notice how setTimeout() calls its own calling function, runClock().

timerID = setTimeout("runClock()",1000)

timerRunning = true

}

function timeNow() {

//Grabs the current time and formats it into hh:mm:ss am/pm format.

now = new Date()

hours = now.getHours()

minutes = now.getMinutes()

seconds = now.getSeconds()

timeStr = "" + ((hours > 12) ? hours - 12 : hours)

timeStr  += ((minutes < 10) ? ":0" : ":") + minutes

timeStr  += ((seconds < 10) ? ":0" : ":") + seconds

timeStr  += (hours >= 12) ? " PM" : " AM"

return timeStr
}
// End of custom functions, stop hiding code -->
</SCRIPT>

■ 控制碼內容：
將下面複製至 <body> 標籤內
onLoad="startTimer()" onunload="stopTimer()"