上面那些东西都没有用 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> 系统学习javascript </TITLE> <Script> <!-- var pos=10;
var col=new Array(); col[0]="yellow"; col[1]="coral"; col[2]="orange"; col[3]="red"; col[4]="greenyellow"; col[5]="lime"; col[6]="turquoise"; col[7]="brown"; col[8]="blueviolet"; col[9]="violet"; function chgCol() { pos++; if (pos<0||pos>9) { pos=0; } document.bgColor=col[pos]; setTimeout("chgCol()",5000); /* Change above set to every 10 seconds (1000=1 sec) if you wist to speed it up ; lower the number.To slow it down. raise the number.*/ } --> </Script> </HEAD> <BODY bgcolor="#ffffff" onload="chgCol()"> <b><p align="center"><font size="6"><strong><font color="darkred">java script</font> <font color="darkblue">new idea</font><br><font color="blue">改变背景色</strong></font></p><p><hr width="90%" color="darkgreen"></p></b></h2></p> </BODY> </HTML>
<HTML>
<HEAD>
<TITLE> 系统学习javascript </TITLE>
<Script>
<!--
var pos=10;
function initArray() {
this.length = initArray.arguments.length;
for(var i=0; i<this.length; i++) {
this[i]=initArray.arguments[i];
}
}
var col=new initArray("4b","5b","8b","8b");
col[0]="yellow";
col[1]="coral";
col[2]="orange";
col[3]="red";
col[4]="greenyellow";
col[5]="lime";
col[6]="turquoise";
col[7]="brown";
col[8]="blueviolet";
col[9]="violet";
function chgCol() {
pos++;
if (pos<0||pos>9) {
pos=0;
}
document.bgColor=col[pos];
setTimeout("chgCol()",5000);
/* Change above set to every 10 seconds (1000=1 sec) if you wist to speed it up ; lower the number.To slow it down. raise the number.*/
}
chgCol()//加到这里调用
-->
</Script>
</HEAD>
<BODY bgcolor="#ffffff" onload="">
<b><p align="center"><font size="6"><strong><font color="darkred">java script</font> <font color="darkblue">new idea</font><br><font color="blue">改变背景色</strong></font></p><p><hr width="90%" color="darkgreen"></p></b></h2></p>
</BODY>
</HTML>
var col=new initArray( "4b ", "5b ", "8b ", "8b ");
后面的"4b""5b""8b""8b"是什么意思?书上没有说。把值改掉,好像也没有什么效果。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> 系统学习javascript </TITLE>
<Script>
<!--
var pos=10;
var col=new Array();
col[0]="yellow";
col[1]="coral";
col[2]="orange";
col[3]="red";
col[4]="greenyellow";
col[5]="lime";
col[6]="turquoise";
col[7]="brown";
col[8]="blueviolet";
col[9]="violet";
function chgCol() {
pos++;
if (pos<0||pos>9) {
pos=0;
}
document.bgColor=col[pos];
setTimeout("chgCol()",5000);
/* Change above set to every 10 seconds (1000=1 sec) if you wist to speed it up ; lower the number.To slow it down. raise the number.*/
}
-->
</Script>
</HEAD>
<BODY bgcolor="#ffffff" onload="chgCol()">
<b><p align="center"><font size="6"><strong><font color="darkred">java script</font> <font color="darkblue">new idea</font><br><font color="blue">改变背景色</strong></font></p><p><hr width="90%" color="darkgreen"></p></b></h2></p>
</BODY>
</HTML>