手动调节背景色

作者：佚名来源：不详发布时间：2006-10-29 0:18:05 发布人：admin

脚本说明:
把如下代码加入<body>区域中
<Script language="JavaScript">
<-- Hiding

var 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+=x
document.color.rd.value= red;
display()
}

function downred(x){
if ((red-x)>=0)
red-=x
document.color.rd.value= red;
display()
}

function upgreen(x){
if ((green+x)<=255)
green+=x
document.color.gr.value= green;
display()
}

function downgreen(x){
if ((green-x)>=0)
green-=x
document.color.gr.value= green;
display()
}

function upblue(x){
if ((blue+x)<=255)
blue+=x
document.color.bl.value= blue;
display()
}

function downblue(x){
if ((blue-x)>=0)
blue-=x
document.color.bl.value= blue;
display()
}

// done hiding -->
</Script>
<form name="color">
                    <table>
                      <tr align="Center"> 
                        <td> 
                          <input name="red" type="button" value=" +50 " onClick="upred(50)">
                        </td>
                        <td> 
                          <input name="red2" type="button" value=" + 10 " onClick="upred(10)">
                        </td>
                        <td> 
                          <input name="red2" type="button" value=" + 1" onClick="upred(1)">
                        </td>
                        <td width="50"><font color="#FF0000" size=+3><b><font color="#FA0000">红</font></b></font></td>
                        <td> 
                          <input name="red-" type="button" value=" - 1" onClick="downred(1)">
                        </td>
                        <td> 
                          <input name="red-" type="button" value=" - 10 " 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=" + 10 " onClick="upgreen(10)">
                        </td>
                        <td> 
                          <input name="green" type="button" value=" + 1" onClick="upgreen(1)">
                        </td>
                        <td width="50"><font color="#00FF00" size=+3><b><font color="#00FA00">绿</font></b></font></td>
                        <td> 
                          <input name="green-" type="button" value=" - 1" onClick="downgreen(1)">
                        </td>
                        <td> 
                          <input name="green-" type="button" value=" - 10 " 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=" + 10 " onClick="upblue(10)">
                        </td>
                        <td> 
                          <input name="blue" type="button" value=" + 1" onClick="upblue(1)">
                        </td>
                        <td width="50"><font color="#0000FF" size=+3><b><font color="#0000FA">蓝</font></b></font></td>
                        <td> 
                          <input name="blue-" type="button" value=" - 1" onClick="downblue(1)">
                        </td>
                        <td> 
                          <input name="blue-" type="button" value=" - 10 " 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>
                      <tr align="Center"> 
                        <td> </td>
                        <td> </td>
                        <td> </td>
                        <td width="50"> 
                          <input type="text" name="rgbdspl" size=7>
                        </td>
                        <td> </td>
                        <td> </td>
                        <td> </td>
                        <td> </td>
                      </tr>
                    </table>
                  </form>

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