的Javascript水平滾動文本，改變顏色

Question

我是新來的JavaScript，我需要改變文本的顏色在這個腳本：

<script language="javascript"> 
<!-- 
var bannerID=0 
function text(msg,ctrlwidth) { 
msg = " --- "+msg 
newmsg = msg 
while (newmsg.length < ctrlwidth) { 
newmsg += msg 
} 
document.write ('<FORM NAME="Scrolltext">'); 
document.write ('<CENTER><INPUT NAME="text" VALUE= "'+newmsg+'" SIZE= '+ctrlwidth+' ></CENTER>'); 
document.write ('</FORM>'); 
var bannerID = null 
rollmsg() 
} 
function rollmsg() { 
NowMsg = document.Scrolltext.text.value 
NowMsg = NowMsg.substring(1,NowMsg.length)+NowMsg.substring(0,1) 
document.Scrolltext.text.value = NowMsg 
bannerID = setTimeout("rollmsg()",100)//change the number 100 to represent the speed of the scroll. The larger the number the slower it moves 
} 
// --> 
</script> 


<script> 
<!-- 
msg = " TEXT GOES HERE" 
ctrlwidth = "100" //change this number to the length you would like the message box to be 
text(msg,ctrlwidth); 
// --> 
</script> 

當前的文本顏色是黑色的，它應該是白色。

Answer 1

您必須使用style屬性，嘗試下面的代碼：

function rollmsg() { 
    NowMsg = document.Scrolltext.text.value; 
    NowMsg = NowMsg.substring(1,NowMsg.length)+NowMsg.substring(0,1); 
    document.Scrolltext.text.value = NowMsg; 
    document.Scrolltext.text.style.color ="white"; //use the style proprety here 
    bannerID = setTimeout("rollmsg()",100)//change the number 100 to represent the speed of the scroll. The larger the number the slower it moves 
} 

Answer 2

理想情況下，你應該使用CSS。

body{ 
    color: #FFFFFF; 
} 

What is CSS? | W3C

Answer 3

嘗試用下面的代碼

var result = NowMsg.fontcolor("white");