阅读式公告栏 – 筚路蓝缕

&lt;script type="text/javascript"&gt;
 var TextNumber = 0;
 // used to track position in message
 var i = 0;
 // used to cycle thru messages var TextNumber = -1;
 // array of messages
 var TextInput = new Object();
 // used to load manipulate message
 var HelpText = "";
// used to load message
var Text = "";
// length of timeout (smaller is faster)
var Speed=50;
// used to display message number
var message=0;
// used to position text in ver 2.0
var addPadding="/r/n";
// Each element of TextInput represents a single message.
TextInput[0] = "消息1";
TextInput[1] = "消息2";
TextInput[2] = "消息3";
TextInput[3] = "消息4";
TextInput[4] = "消息5";
TextInput[5] = "消息6";
TextInput[6] = "消息7";
TextInput[7] = "消息8";
TotalTextInput = 7;
// (0, 1, 2, 3, 4, 5, 6, 7)
// Positioning and speed vary between versions.
var Version = navigator.appVersion;
if (Version.substring(0, 1)==3) { Speed=200; addPadding="";
 }
 for (var addPause = 0; addPause &lt;= TotalTextInput; addPause++)
 {
 	TextInput[addPause] = addPadding + TextInput[addPause];
 }
 var TimerId
 var TimerSet = false;
 // Called by &gt;&gt;&gt; button (display next message) . 

 function nextMessage()
 {
 	if (!TimerSet)
 	{
 		TimerSet = true;
 		clearTimeout(TimerId);
 		if (TextNumber &gt;= TotalTextInput)
 		{
 			alert("This is the end of the list!");
 			TimerSet = false;
 		}
 		else
 		{
 			TextNumber += 1;
 			message = TextNumber + 1;
 			document.forms[0].elements[2].value = message;
 			Text = TextInput[TextNumber];
 			HelpText = Text;
 		}
 		teletype();
 	}
 }
 // Gets and displays character from rollMessage() .
 // Variable Speed controls length of timeout and thus the speed of typing. 

 function teletype()
 {
 	if (TimerSet)
 	{
 		Text = rollMessage();
 		TimerId = setTimeout("teletype()", Speed);
 		document.forms[0].elements[0].value = Text;
 	}
 }
 // Pulls one character at a time from string and returns (as Text) to function teletype() for displaying. 

 function rollMessage()
 {
 	i++;
 	var CheckSpace = HelpText.substring(i - 1, i);
 	CheckSpace = "" + CheckSpace;
 	if (CheckSpace == "")
 	{
 		i++;
 	}
 	if (i &gt;= HelpText.length + 1)
 	{
 		TimerSet = false;
 		Text = HelpText.substring(0, i);
 		i = 0;
 		return (Text);
 	}
 	Text = HelpText.substring(0, i);
 	return (Text);
 }
 // Initially called by onLoad in BODY tag to load title. 

 function initTeleType()
 {
 	Text = "/r/n Manual Tele - Type Display";
 	document.forms[0].elements[0].value = Text;
 }
 // Called by &lt;&lt;&lt; button (get previous message). 

 function lastMessage()
 {
 	if (!TimerSet &amp;&amp; TextNumber != -1)
 	{
 		TimerSet = true;
 		clearTimeout(TimerId);
 		if (TextNumber &lt;= 0)
 		{
 			alert("This is the beginning of the list!");
 			TimerSet = false;
 		}
 		else
 		{
 			TextNumber -= 1;
 			message = TextNumber + 1;
 			document.forms[0].elements[2].value = message;
 			Text = TextInput[TextNumber];
 			HelpText = Text;
 		}
 		teletype();
 	}
 }
&lt;/script&gt;
&lt;form&gt;
	&lt;table cellspacing="0" cellpadding="0" width="17%"&gt;
	&lt;tr&gt;
		&lt;td width="100%" colspan="3" valign="top"&gt;
			&lt;textarea name="teletype" rows="3" cols="28" wrap="yes"&gt;&lt;/textarea&gt;
		&lt;/td&gt;
	&lt;/tr&gt;
	&lt;tr align="center"&gt;
		&lt;td width="40%" valign="top" bgcolor="#0000A0"&gt;
			&lt;input type="button" value="公告栏" onclick="lastMessage()"&gt;
		&lt;/td&gt;
		&lt;td width="30%" bgcolor="#0000A0" valign="top"&gt;
			&lt;input type="text" value="共8条" size="5" name="1"&gt;
		&lt;/td&gt;
		&lt;td width="30%" bgcolor="#0000A0" valign="top"&gt;
			&lt;input type="button" value="阅' 读" onclick="nextMessage()"&gt;
		&lt;/td&gt;
	&lt;/tr&gt;
	&lt;/table&gt;
&lt;/form&gt;

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var TextNumber = 0;

// used to track position in message

var i = 0;

// used to cycle thru messages var TextNumber = -1;

// array of messages

var TextInput = new Object();

// used to load manipulate message

var HelpText = "";

// used to load message

var Text = "";

// length of timeout (smaller is faster)

var Speed=50;

// used to display message number

var message=0;

// used to position text in ver 2.0

var addPadding="/r/n";

// Each element of TextInput represents a single message.

TextInput[0] = "消息1";

TextInput[1] = "消息2";

TextInput[2] = "消息3";

TextInput[3] = "消息4";

TextInput[4] = "消息5";

TextInput[5] = "消息6";

TextInput[6] = "消息7";

TextInput[7] = "消息8";

TotalTextInput = 7;

// (0, 1, 2, 3, 4, 5, 6, 7)

// Positioning and speed vary between versions.

var Version = navigator.appVersion;

if (Version.substring(0, 1)==3) { Speed=200; addPadding="";

}

for (var addPause = 0; addPause <= TotalTextInput; addPause++)

{

TextInput[addPause] = addPadding + TextInput[addPause];

}

var TimerId

var TimerSet = false;

// Called by >>> button (display next message) .

function nextMessage()

{

if (!TimerSet)

{

TimerSet = true;

clearTimeout(TimerId);

if (TextNumber >= TotalTextInput)

{

alert("This is the end of the list!");

TimerSet = false;

}

else

{

TextNumber += 1;

message = TextNumber + 1;

document.forms[0].elements[2].value = message;

Text = TextInput[TextNumber];

HelpText = Text;

}

teletype();

}

// Gets and displays character from rollMessage() .

// Variable Speed controls length of timeout and thus the speed of typing.

function teletype()

{

if (TimerSet)

{

Text = rollMessage();

TimerId = setTimeout("teletype()", Speed);

document.forms[0].elements[0].value = Text;

}

// Pulls one character at a time from string and returns (as Text) to function teletype() for displaying.

function rollMessage()

{

i++;

var CheckSpace = HelpText.substring(i - 1, i);

CheckSpace = "" + CheckSpace;

if (CheckSpace == "")

{

i++;

}

if (i >= HelpText.length + 1)

{

TimerSet = false;

Text = HelpText.substring(0, i);

i = 0;

return (Text);

}

Text = HelpText.substring(0, i);

return (Text);

}

// Initially called by onLoad in BODY tag to load title.

function initTeleType()

{

Text = "/r/n Manual Tele - Type Display";

document.forms[0].elements[0].value = Text;

}

// Called by <<< button (get previous message).

function lastMessage()

{

if (!TimerSet && TextNumber != -1)

{

TimerSet = true;

clearTimeout(TimerId);

if (TextNumber <= 0)

{

alert("This is the beginning of the list!");

TimerSet = false;

}

else

{

TextNumber -= 1;

message = TextNumber + 1;

document.forms[0].elements[2].value = message;

Text = TextInput[TextNumber];

HelpText = Text;

}

teletype();

}

</script>

<form>

<tr>

</td>

</tr>

</td>

</td>

</td>

</tr>

</table>

</form>

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