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JavaScript数组应用,可依次读取的公告栏文字

一个JavaScript数组的应用例子,我们将文字存储于数组中,然后用循环依次输出这些文字,像一条一条的公告一样,不过现在都不这么用了,可以学习JS数组,算是一个实例参考。
答案:<title>JavaScript数组文字</title>
<script language="JavaScript">
var i = 0;  
var TextNumber = -1;
var TextInput = new Object();
var HelpText=""; 
var Text = ""; 
var Speed=50;
var message=0;
var addPadding="\r\n";
TextInput[0] = "今天是站长资源库成立5周年的庆祝日!"; 
TextInput[1] = "感谢朋友们多年来的支持……";
TextInput[2] = "我们将一如继往为大家奉献更好的资源!";
TotalTextInput = 2; // (0, 1, 2)
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;
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();
}
}

function teletype() 
{
if (TimerSet)
{
Text=rollMessage();
TimerId = setTimeout("teletype()", Speed);
document.forms[0].elements[0].value=Text;
}
}

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);
}

function initTeleType() 
{
Text="\r\n Manual Tele-Type Display";
document.forms[0].elements[0].value=Text;
}

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>
<table CELLSPACING="0" CELLPADDING="0" WIDTH="420">
<tr>
<td width="100%" colspan="3" valign="top"><div align="center"><textarea NAME="teletype" ROWS="3" COLS="49" wrap="yes"></textarea> </td>
</tr>
<tr align="center">
<td width="30%" bgcolor="#0000A0" valign="top"><input TYPE="text" value="共3条" SIZE="5" name="1"></td>
<td width="30%" bgcolor="#0000A0" valign="top"><input TYPE="button" VALUE="阅 读" onClick="nextMessage()"></td>
</tr>
</table>
</form>

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