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鼠标取色器

稿源：互联网 2022-04-21 08:09:27 点击： 965 撤稿纠错

鼠标取色器，点击后显示颜色代码。

以下讨论的是和取色器相关的鼠标取色器教程文章，内容是本站精心挑选整理的教程，希望对广大的网友给到帮助,下面是详细内容：

脚本代码(For Alixixi.com)如下:

脚本说明:
把如下代码加入<body>区域中
<SCRIPT language=JavaScript>
var SelRGB = '';
var DrRGB = '';
var SelGRAY = '120';

var hexch = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F');

function ToHex(n)
{	var h, l;

n = Math.round(n);
	l = n % 16;
	h = Math.floor((n / 16)) % 16;
	return (hexch[h] + hexch[l]);
}

function DoColor(c, l)
{ var r, g, b;

r = '0x' + c.substring(1, 3);
  g = '0x' + c.substring(3, 5);
  b = '0x' + c.substring(5, 7);

if(l > 120)
  {
    l = l - 120;

r = (r * (120 - l) + 255 * l) / 120;
    g = (g * (120 - l) + 255 * l) / 120;
    b = (b * (120 - l) + 255 * l) / 120;
  }else
  {
    r = (r * l) / 120;
    g = (g * l) / 120;
    b = (b * l) / 120;
  }

return '#' + ToHex(r) + ToHex(g) + ToHex(b);
}

function EndColor()
{ var i;

if(DrRGB != SelRGB)
  {
    DrRGB = SelRGB;
    for(i = 0; i <= 30; i ++)
      GrayTable.rows(i).bgColor = DoColor(SelRGB, 240 - i * 8);
  }

SelColor.value = DoColor(RGB.innerText, GRAY.innerText);
  ShowColor.bgColor = SelColor.value;
}
</SCRIPT>

<SCRIPT event=onclick for=ColorTable language=JavaScript>
  SelRGB = event.srcElement.bgColor;
  EndColor();
</SCRIPT>

<SCRIPT event=onmouseover for=ColorTable language=JavaScript>
  RGB.innerText = event.srcElement.bgColor;
  EndColor();
</SCRIPT>

<SCRIPT event=onmouseout for=ColorTable language=JavaScript>
  RGB.innerText = SelRGB;
  EndColor();
</SCRIPT>

<SCRIPT event=onclick for=GrayTable language=JavaScript>
  SelGRAY = event.srcElement.title;
  EndColor();
</SCRIPT>

<SCRIPT event=onmouseover for=GrayTable language=JavaScript>
  GRAY.innerText = event.srcElement.title;
  EndColor();
</SCRIPT>

<SCRIPT event=onmouseout for=GrayTable language=JavaScript>
  GRAY.innerText = SelGRAY;
  EndColor();
</SCRIPT>

<SCRIPT event=onclick for=Ok language=JavaScript>
  window.returnValue = SelColor.value;
  window.close();
</SCRIPT>
<DIV align=center>
<CENTER>
<TABLE border=0 cellPadding=0 cellSpacing=10>
  <TBODY>
  <TR>
    <TD>
      <TABLE border=0 cellPadding=0 cellSpacing=0 id=ColorTable
      style="CURSOR: hand">
        <SCRIPT language=JavaScript>
function wc(r, g, b, n)
{
	r = ((r * 16 + r) * 3 * (15 - n) + 0x80 * n) / 15;
	g = ((g * 16 + g) * 3 * (15 - n) + 0x80 * n) / 15;
	b = ((b * 16 + b) * 3 * (15 - n) + 0x80 * n) / 15;

document.write('<TD BGCOLOR=#' + ToHex(r) + ToHex(g) + ToHex(b) + ' height=8 width=8></TD>');
}

var cnum = new Array(1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0);

for(i = 0; i < 16; i ++)
  {
     document.write('<TR>');
     for(j = 0; j < 30; j ++)
     {
     	n1 = j % 5;
     	n2 = Math.floor(j / 5) * 3;
     	n3 = n2 + 3;

wc((cnum[n3] * n1 + cnum[n2] * (5 - n1)),
     		(cnum[n3 + 1] * n1 + cnum[n2 + 1] * (5 - n1)),
     		(cnum[n3 + 2] * n1 + cnum[n2 + 2] * (5 - n1)), i);
     }

document.writeln('</TR>');
  }
</SCRIPT>

<TBODY></TBODY></TABLE></TD>
    <TD>
      <TABLE border=0 cellPadding=0 cellSpacing=0 id=GrayTable
      style="CURSOR: hand">
        <SCRIPT language=JavaScript>
  for(i = 255; i >= 0; i -= 8.5)
     document.write('<TR BGCOLOR=#' + ToHex(i) + ToHex(i) + ToHex(i) + '><TD TITLE=' + Math.floor(i * 16 / 17) + ' height=4 width=20></TD></TR>');
</SCRIPT>

<TBODY></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER></DIV>
<DIV align=center>
<CENTER>
<TABLE border=0 cellPadding=0 cellSpacing=10>
  <TBODY>
  <TR>
    <TD align=middle rowSpan=2>选中色彩
      <TABLE border=1 cellPadding=0 cellSpacing=0 height=30 id=ShowColor
      width=40>
        <TBODY>
        <TR>
          <TD></TD></TR></TBODY></TABLE></TD>
    <TD rowSpan=2>基色: <SPAN id=RGB></SPAN><BR>亮度: <SPAN
      id=GRAY>120</SPAN><BR>代码: <INPUT id=SelColor size=7></TD>
    <TD><BUTTON type=reset>重选</BUTTON></TD></TR>
  <TR>
    <TD><BUTTON
onclick=window.close();>关闭</BUTTON>
</TD>
</TR>
</TBODY>
</TABLE>
</CENTER>
</DIV>

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