<html>
<head>
<title>bgcolor</title>
</head>
<body text=000000 bgcolor=ffffff>
<table border=0 align=center>
<tr><td><form>
<input type=button value="красный" onClick="document.bgColor='ff0000'">
<input type=button value="желтый" onClick="document.bgColor='ffff00'">
<input type=button value="синий" onClick="document.bgColor='0000ff'">
<input type=button value="голубой" onClick="document.bgColor='87ceeb'">
<input type=button value="коралловый" onClick="document.bgColor='ff7f50'">
</form></td>
</table>
</body>
</html>
Документ с изменяющимся фоном.
<html>
<head>
<title>Изменение фона документа</title>
<script>
function bg_Array() {
this.length = bg_Array.arguments.length
for (var i = 0; i< this.length; i++)
this[i] = bg_Array.arguments[i]
}
var bg_Chars = "0123456789ABCDEF";
function Dec2Hex (Dec) {
var a = Dec % 16;
var b = (Dec - a)/16;
hex = "" + bg_Chars.charAt(b) + bg_Chars.charAt(a);
return hex;
}
function bg_Changer (begin, end, steps) {
steps = steps -1 ;
redA = begin.charAt(0) + begin.charAt(1);
red_valA = parseInt(redA,'16');
redB = end.charAt(0) + end.charAt(1);
red_valB = parseInt(redB,'16');
red_int = ((red_valB - red_valA) / steps) * -1;
grnA = begin.charAt(2) + begin.charAt(3);
grn_valA = parseInt(grnA,'16');
grnB = end.charAt(2) + end.charAt(3);
grn_valB = parseInt(grnB,'16');
grn_int = ((grn_valB - grn_valA) / steps) * -1;
bluA = begin.charAt(4) + begin.charAt(5);
blu_valA = parseInt(bluA,'16');
bluB = end.charAt(4) + end.charAt(5);
blu_valB = parseInt(bluB,'16');
blu_int = ((blu_valB - blu_valA) / steps) * -1;
step = 2;
red = red_valA;
grn = grn_valA;
blu = blu_valA;
document.bgColor = begin;
while ( steps >= step ) {
red -= red_int;
red_round = Math.round(red);
red_hex = Dec2Hex(red);
grn -= grn_int;
grn_round = Math.round(grn);
grn_hex = Dec2Hex(grn);
blu -= blu_int;
blu_round = Math.round(blu);
blu_hex = Dec2Hex(blu);
document.bgColor = red_hex + grn_hex + blu_hex;
step++;
}
document.bgColor = end;
}
for (j=0;j<5;j++) {
bg_Changer("ffff00","00ff00",50);
bg_Changer("00ff00","ff0000",50);
bg_Changer("ff0000","0000ff",50);
bg_Changer("0000ff","f0ffff",50);
bg_Changer("f0ffff","7fff00",50);
bg_Changer("7fff00","ff00ff",50);
bg_Changer("ff00ff","00ffff",50);
bg_Changer("00ffff","eee8aa",50);
bg_Changer("eee8aa","ffb6c1",50);
bg_Changer("ffb6c1","98fb98",50);
bg_Changer("98fb98","afeeee",50);
}
</script>
</head>
<body>
</body>
</html>
