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名称
背景色代码调色板
实例
教程
第一步：拷贝下面的代码到你的html文件的<head>和</head>之间；
<Script Language="JavaScript"> <!-- Hidingvar red=0;var green=0;var blue=0;var value=0;var convert = new Array()var hexbase= new Array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F");for (x=0; x<16; x++){for (y=0; y<16; y++){convert[value]= hexbase[x] + hexbase[y];value++;}}function clear(){document.color.bl.value= blue;document.color.rd.value= red;document.color.gr.value= green;}function display(){redx = convert[red]greenx = convert[green]bluex = convert[blue]var rgb = "#"+redx+greenx+bluex;document.color.rgbdspl.value= rgb;document.bgColor =rgb;}function upred(x){if ((red+x)<=255)red+=xdocument.color.rd.value= red;display()}function downred(x){if ((red-x)>=0)red-=xdocument.color.rd.value= red;display()}function upgreen(x){if ((green+x)<=255)green+=xdocument.color.gr.value= green;display()}function downgreen(x){if ((green-x)>=0)green-=xdocument.color.gr.value= green;display()}function upblue(x){if ((blue+x)<=255)blue+=xdocument.color.bl.value= blue;display()}function downblue(x){if ((blue-x)>=0)blue-=xdocument.color.bl.value= blue;display()}// done hiding --> </Script>
第二步：修改你的<body>语句为；<BODY onLoad="clear();display()" BGCOLOR="#000000">
<CENTER> <FORM Name="color"> <TABLE> <TR Align="Center"><TD><INPUT NAME="red" type="button" VALUE=" +50 " onclick="upred(50)"></TD><TD><INPUT NAME="red" type="button" VALUE=" + + " onclick="upred(10)"></TD><TD><INPUT NAME="red" type="button" VALUE=" + " onclick="upred(1)"> </TD><TD><Font Color="#FF0000" size=+3>RED</font></TD> <TD><INPUT NAME="red-" type="button" VALUE=" - " onclick="downred(1)"></TD><TD><INPUT NAME="red-" type="button" VALUE=" - - " onclick="downred(10)"></TD><TD><INPUT NAME="red-" type="button" VALUE=" -50 " onclick="downred(50)"></TD> <TD><Input type="text" Name="rd" Size=3></TD></TR> <TR Align="Center"><TD><INPUT NAME="green" type="button" VALUE=" +50 " onclick="upgreen(50)"></TD><TD><INPUT NAME="green" type="button" VALUE=" + + " onclick="upgreen(10)"></TD><TD><INPUT NAME="green" type="button" VALUE=" + " onclick="upgreen(1)"></TD> <TD><Font Color="#00FF00" size=+3>GREEN</font></TD> <TD><INPUT NAME="green-" type="button" VALUE=" - " onclick="downgreen(1)"></TD><TD><INPUT NAME="green-" type="button" VALUE=" - - " onclick="downgreen(10)"></TD><TD><INPUT NAME="green-" type="button" VALUE=" -50 " onclick="downgreen(50)"></TD> <TD><Input type="text" Name="gr" Size=3></TD></TR> <TR Align="Center"><TD><INPUT NAME="blue" type="button" VALUE=" +50 " onclick="upblue(50)"></TD><TD><INPUT NAME="blue" type="button" VALUE=" + + " onclick="upblue(10)"></TD><TD><INPUT NAME="blue" type="button" VALUE=" + " onclick="upblue(1)"></TD> <TD><Font Color="#0000FF" size=+3>BLUE</font></TD> <TD><INPUT NAME="blue-" type="button" VALUE=" - " onclick="downblue(1)"></TD><TD><INPUT NAME="blue-" type="button" VALUE=" - - " onclick="downblue(10)"></TD><TD><INPUT NAME="blue-" type="button" VALUE=" -50 " onclick="downblue(50)"></TD> <TD><Input type="text" Name="bl" Size=3></TD></TR> </TABLE> <Input type="text" Name="rgbdspl" Size=7> </FORM> </CENTER>
第三步：拷贝下面的代码到你的html文件的<body>和</body>之间；
说明：