本文實例講述了JS實現網頁背景顏色與select框中顏色同時變化的方法。分享給大家供大家參考。具體實現方法如下：
複製代碼代碼如下:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JS實現網頁背景顏色與select框中的顏色同時變化</title>
</head>
<body>
<script language="javascript">
colors = new Array('#FFFFFF','#FFCCFF','#FF99FF','#FF66FF','#FF33FF','#FF00FF','#FFFFCC','#FFCCCC','#FF99CC','#FF66CC','#FF33CC','#FF00CC','#FFFF99','#FFCC99','#FF9999','#FF6699','#FF3399','#FF0099','#FFFF66','#FFCC66','#FF9966','#FF6666','#FF3366','#FF0066','#FFFF33','#FFCC33','#FF9933','#FF6633','#FF3333','#FF0033','#FFFF00','#FFCC00','#FF9900','#FF6600','#FF3300','#FF0000','#CCFFFF','#CCCCFF','#CC99FF','#CC66FF','#CC33FF','#CC00FF','#CCFFCC','#CCCCCC','#CC99CC','#CC66CC','#CC33CC','#CC00CC','#CCFF99','#CCCC99','#CC9999','#CC6699','#CC3399','#CC0099','#CCFF66','#CCCC66','#CC9966','#CC6666','#CC3366','#CC0066','#CCFF33','#CCCC33','#CC9933','#CC6633','#CC3333','#CC0033','#CCFF00','#CCCC00','#CC9900','#CC6600','#CC3300','#CC0000','#99FFFF','#99CCFF','#9999FF','#9966FF','#9933FF','#9900FF','#99FFCC','#99CCCC','#9999CC','#9966CC','#9933CC','#9900CC','#99FF99','#99CC99','#999999','#996699','#993399','#990099','#99FF66','#99CC66','#999966','#996666','#993366','#990066','#99FF33','#99CC33','#999933','#996633','#993333','#990033','#99FF00','#99CC00','#999900','#996600','#993300','#990000','#66FFFF','#66CCFF','#6699FF','#6666FF','#6633FF','#6600FF','#66FFCC','#66CCCC','#6699CC','#6666CC','#6633CC','#6600CC','#66FF99','#66CC99','#669999','#666699','#663399','#660099','#66FF66','#66CC66','#669966','#666666','#663366','#660066','#66FF33','#66CC33','#669933','#666633','#663333','#660033','#66FF00','#66CC00','#669900','#666600','#663300','#660000','#33FFFF','#33CCFF','#3399FF','#3366FF','#3333FF','#3300FF','#33FFCC','#33CCCC','#3399CC','#3366CC','#3333CC','#3300CC','#33FF99','#33CC99','#339999','#336699','#333399','#330099','#33FF66','#33CC66','#339966','#336666','#333366','#330066','#33FF33','#33CC33','#339933','#336633','#333333','#330033','#33FF00','#33CC00','#339900','#336600','#333300','#330000','#00FFFF','#00CCFF','#0099FF','#0066FF','#0033FF','#0000FF','#00FFCC','#00CCCC','#0099CC','#0066CC','#0033CC','#0000CC','#00FF99','#00CC99','#009999','#006699','#003399','#000099','#00FF66','#00CC66','#009966','#006666','#003366','#000066','#00FF33','#00CC33','#009933','#006633','#003333','#000033','#00FF00','#00CC00','#009900','#006600','#003300','#000000');
function show(file){
var url = file.options[file.selectedIndex].value;
if(document.all || document.layers)
location.href = url;
else if(document.getElementById){
if(url != undefined)
location.href = url;
}
}
var streng;
var color1 = colors[Math.round(Math.random() * (colors.length-1))];
var color2 = colors[Math.round(Math.random() * (colors.length-1))];
var color3 = colors[Math.round(Math.random() * (colors.length-1))];
streng = '<style type="text/css">select{width:300; height:118; overflow:hidden; font-family:times new roman; font-size: 14px; color:';
streng += color1;
streng += '; background:';
streng += color2;
streng += ';}body{background: ';
streng += color3;
streng += ';}td{font-family: times new roman; font-size: 14px; color: #000000;}</style>';
document.writeln(streng);
</script>
<table cellspacing="0" cellpadding="0">
<form name="form" target="_blank">
<tr>
<td>
<select name="showoff" id="showoff" size="3" onChange="show(document.form.showoff)">
<option value="http://www.163.com">163網易</option>
<option value="http://www.baidu.com">百度搜索</option>
</select>
</td>
</tr>
</form>
</table>
</body>
</html>
希望本文所述對大家的javascript程序設計有所幫助。