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="rn";
// Each element of TextInput rePResents a single message. TextInput[0] = "今天注意了有新的任務布置"; TextInput[1] = "歡迎你的光臨！本站為你提供大量Javascript下載"; TextInput[2] = "重點介紹Javascript"; TextInput[3] = "與制作網頁特效密切相關的技術"; TextInput[4] = "本站同時有影音空間等欄目"; TextInput[5] = "還有新聞及健康方面的資料"; TextInput[6] = "還有寬帶網方面的大量技術文章"; TextInput[7] = "本站網址：http://www.njcatv.net";
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="rn 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(); } }
