颜色代码生成器
颜色代码生成器

脚本说明：
第一步:把如下代码加入<head>区域中:
<script language=JavaScript1.2>
<!--
var bName=navigator.appName;
var bVer=parseInt(navigator.appVersion);
var NS4=(bName=="Netscape" && bVer >= 4);
var IE4=(bName=="Microsoft Internet Explorer" && bVer >= 4);
var fstr_r;
var fstr_g;
var fstr_b;
var sItem="S";

function display(id, str){
 if(NS4 || IE4){
  if(NS4){
   with (document[id].document){
    open(); write(str); close();
   }
  }else document.all[id].innerHTML=str;
 }else{
  document.fsample2.startcolor.value=document.GradForm.start.value;
  document.fsample2.endcolor.value=document.GradForm.end.value;
 }
}

function makeArray(){
 for(i = 0; i<makeArray.arguments.length; i++)
  this[i] = makeArray.arguments[i];
}

var convert = new makeArray('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');

function returnBase(number,base) {
 eval("var output=parseInt(number)");
 if(isNum(number,base)){
  if(number < base) output = convert[output];
  else{
   var MSD = '' + Math.floor(number / base);
   var LSD = number - MSD*base;
   if(MSD > base) output = returnBase(MSD,base) + convert[LSD];
   else output = convert[MSD] + convert[LSD];
  }
 }else{
  output=0;
 }
 return output;
}

function isNum(no, base){
 var cmp="0123456789";
 var chkStr=no;
 var chkChar;
 var rc=true;
 var nLen;

 if(base == 16){
  cmp+="ABCDEFabcdef";
 }else if(base == 10){
  eval("chkStr=''+parseInt(chkStr)");
 }
 nLen=chkStr.length;

 for(var i=0; i<nLen; i++){
   chkChar=chkStr.substring(i,i+1)
   if(i==0 && chkChar == "#" && base == 16){
   }else if(cmp.indexOf(chkChar)<0){
    rc=false;
   }
   if(rc == false) i=nLen;
 }
 return rc;
}

function chkNum(obj,base){
 var form=document.GradForm;
 var rc=true;

 if(base==10){
  eval("rc=form."+obj+".value <= 255");
 }

 if(rc){
  eval("rc=isNum(form."+obj+".value,"+base+")");
  if(!rc){
   alert("输入的数值不正确！");
   eval("form."+obj+".focus()");
  }
 }else{
  alert("输入的数值大于255！");
  eval("form."+obj+".focus()");
 }
 return rc;
}

function twobyte(no){
 var str=no;

 if(isNum(no,16)){
  str="0"+str;
  str=str.substring((str.length-3)+1);
 }else{
  str="00";
 }
 return str;
}

function CstrLen(cStr){
 var sLen=cStr.length;
 var j=0;
 for(var i=0;i<sLen;i++){
   str=cStr.charAt(i);
   if(NS4 && str.charCodeAt(0)<1){
    i++;
   }
   j++;
 }
 return j;
}

function GradientText(form, color1, color2, color3, gStr, gType){
 var redStep, greenStep, BlueStep;
 var str_r, str_g, str_b, str;

 var gStep=CstrLen(gStr);

 var b1 = color1 % 0x100; if(isNaN(b1)) b1=0;
 var g1 = parseInt(color1 / 0x100) % 0x100; if(isNaN(g1)) g1=0;
 var r1 = parseInt(color1 / 0x10000) % 0x100; if(isNaN(r1)) r1=0;

 var b2 = color2 % 0x100; if(isNaN(b2)) b2=0;
 var g2 = parseInt(color2 / 0x100) % 0x100; if(isNaN(g2)) g2=0;
 var r2 = parseInt(color2 / 0x10000) % 0x100; if(isNaN(r2)) r2=0;

 var cStepAdd = parseInt(256 / gStep);

 if(g1 > g2){
  greenStep = 0;
 }else if(g2 > g1){
  greenStep = 1;
 }else{
  greenStep = 2;
 }

 if(r1 > r2){
  redStep = 0;
 }else if(r2 > r1){
  redStep = 1;
 }else{
  redStep = 2;
 }

 if(b1 > b2){
  BlueStep = 0;
 }else if(b2 > b1){
  BlueStep = 1;
 }else{
  BlueStep = 2;
 }

 var GradStr="";
 if(gType == 'S'){
  GradStr+='<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0><TR><TD ALIGN=CENTER BGCOLOR="'+color3+'"><br>';
 }

 for(var i=0; i<gStr.length; i++){
   str_r=twobyte(returnBase(r1,16));
   str_g=twobyte(returnBase(g1,16));
   str_b=twobyte(returnBase(b1,16));

   str=gStr.charAt(i);
   if(NS4 && str.charCodeAt(0)<1){
    str=str+gStr.charAt(i+1);
    i++;
   }

   GradStr+='<font color="#'+str_r+str_g+str_b+'">'+str+'</font>';

   if(redStep==1){
    r1 = r1 + cStepAdd;
    if(r1 > r2) r1 = r2;
   }else if(redStep==0){
    r1 = r1 - cStepAdd;
    if(r1 < r2) r1 = r2;
   }
    
   if(greenStep==1){
    g1 = g1 + cStepAdd;
    if(g1 > g2) g1 = g2;
   }else if(greenStep==0){
    g1 = g1 - cStepAdd;
    if(g1 < g2) g1 = g2;
   }

   if(BlueStep==1){
    b1 = b1 + cStepAdd;
    if(b1 > b2) b1 = b2;
   }else if(BlueStep==0){
    b1 = b1 - cStepAdd;
    if(b1 < b2) b1 = b2;
   }
 }

 if(gType == 'S'){
  GradStr+='<br> </TD></TR></TABLE>';
 }

 return GradStr;
}

function GenTag(form){
 var ss,ee,bb;

 if(!isNum(form.start.value,16)){
  alert("请检查起始颜色数值");
 }else if(!isNum(form.end.value,16)){
  alert("请检查结束颜色数值");
 }else if(!isNum(form.bg.value,16)){
  alert("请检查背景颜色数值");
 }else{
  eval("ss=0x"+form.start.value.substring(1)+";");
  eval("ee=0x"+form.end.value.substring(1)+";");
  eval("bb=form.bg.value");
  form.code.value=GradientText(form,ss,ee,bb,form.showstr.value,"C");
 }
}

function newRGB(type, field2){
 var form=document.GradForm;
 var chkOK=true;
 var vNo;

 if(field2==""){
  if(sItem=="S"){
   chkOK=chkNum('start',16);
  }else if(sItem=="E"){
   chkOK=chkNum('end',16);
  }else if(sItem=="B"){
   chkOK=chkNum('bg',16);
  }
 }

 if(chkOK){
  if(type==0){
   if(field2 != "") eval("chkOK=isNum(form.rgb_"+field2+".value,10)");
   if(chkOK){
    if(field2 != "") eval("chkOK=chkNum('rgb_"+field2+"',10)");
    if(chkOK){
     fstr_r=twobyte(returnBase(form.rgb_r.value,16));
     fstr_g=twobyte(returnBase(form.rgb_g.value,16));
     fstr_b=twobyte(returnBase(form.rgb_b.value,16));
     if(sItem=="S"){
      form.start.value="#"+fstr_r+fstr_g+fstr_b;
     }else if(sItem=="E"){
      form.end.value="#"+fstr_r+fstr_g+fstr_b;
     }else if(sItem=="B"){
      form.bg.value="#"+fstr_r+fstr_g+fstr_b;
     }
    }
   }else{
    alert("输入的颜色数值不正确。");
    eval("form.rgb_"+field2+"s.focus()");
   }
  }else{
   if(sItem=="S"){
    fstr_r=form.start.value.substring(1,3);
    fstr_g=form.start.value.substring(3,5);
    fstr_b=form.start.value.substring(5,7);
   }else if(sItem=="E"){
    fstr_r=form.end.value.substring(1,3);
    fstr_g=form.end.value.substring(3,5);
    fstr_b=form.end.value.substring(5,7);
   }else if(sItem=="B"){
    fstr_r=form.bg.value.substring(1,3);
    fstr_g=form.bg.value.substring(3,5);
    fstr_b=form.bg.value.substring(5,7);
   }
   form.rgb_r.value=parseInt(fstr_r,16);
   form.rgb_g.value=parseInt(fstr_g,16);
   form.rgb_b.value=parseInt(fstr_b,16);
  }
  if(chkOK) AddText();
 }
}

function AddText(){
 var form=document.GradForm;
 var ss,ee,bb;

 eval("ss=0x"+form.start.value.substring(1)+";");
 eval("ee=0x"+form.end.value.substring(1)+";");
 eval("bb=form.bg.value");

 str=GradientText(form,ss,ee,bb,form.showstr.value,"S");
 display("fsample", str);
}

function setRGB(id,no){
 var form=document.GradForm;
 var nid="rgb_"+id;

 if(id){
  var tmp=eval("parseInt(form."+nid+".value)+parseInt("+no+")");
  if(tmp<0) tmp=255;
  else if(tmp>255) tmp=0;

  eval("form."+nid+".value="+tmp);
 }

 fstr_r=twobyte(returnBase(form.rgb_r.value,16));
 fstr_g=twobyte(returnBase(form.rgb_g.value,16));
 fstr_b=twobyte(returnBase(form.rgb_b.value,16));

 if(sItem=="S"){
  form.start.value="#"+fstr_r+fstr_g+fstr_b;
 }else if(sItem=="E"){
  form.end.value="#"+fstr_r+fstr_g+fstr_b;
 }else if(sItem=="B"){
  form.bg.value="#"+fstr_r+fstr_g+fstr_b;
 }

 AddText();
}

function SetColor(clr){
 if(sItem=="S"){
  document.GradForm.start.value="#"+clr;
 }else if(sItem=="E"){
  document.GradForm.end.value="#"+clr;
 }else if(sItem=="B"){
  document.GradForm.bg.value="#"+clr;
 }

 ResetValue();
 AddText();
}

function set(swtch){
 if(swtch == 1) sItem="S";
 else if (swtch == 2) sItem="E";
 else if (swtch == 0) sItem="B";
 ResetValue();
}

function ResetValue(){
 var form=document.GradForm;
 var str_r, str_g, str_b;

 if(sItem=="S"){
  str_r=form.start.value.substring(1,3);
  str_g=form.start.value.substring(3,5);
  str_b=form.start.value.substring(5,7);
 }else if(sItem=="E"){
  str_r=form.end.value.substring(1,3);
  str_g=form.end.value.substring(3,5);
  str_b=form.end.value.substring(5,7);
 }else if(sItem=="B"){
  str_r=form.bg.value.substring(1,3);
  str_g=form.bg.value.substring(3,5);
  str_b=form.bg.value.substring(5,7);
 }
 form.rgb_r.value=parseInt(str_r,16);
 form.rgb_g.value=parseInt(str_g,16);
 form.rgb_b.value=parseInt(str_b,16);
}

function nomsg(){
 self.status="";
}

function myReset(){
 AddText();
}

//-->
</script>




第二步:把如下代码加入<body>区域中:
<form name=GradForm>
<table border=1><tr><td>
<INPUT type=radio name=setitem value="bg" onClick="set(0)">背景色<input type=text name="bg" size=6 value="#FFFFFF" onChange="newRGB(1,'')">
<INPUT type=radio name=setitem value="start" onClick="set(1)" checked>起始色<input type=text name="start" size=6 value="#FF0000" onChange="newRGB(1,'')">
<INPUT type=radio name=setitem value="end" onClick="set(2)">结束色<input type=text name="end" size=6 value="#0000FF" onChange="newRGB(1,'')">
</td></tr>

<tr><td>
<font color="#FF0000">红</font> <input type="Button" value="+" onClick="setRGB('r',1)"><INPUT type=text name=rgb_r size=3 value=0 onChange="newRGB(0,'r')"><input type="Button" value="-" onClick="setRGB('r',-1)">
<font color="#009900">绿</font> <input type="Button" value="+" onClick="setRGB('g',1)"><INPUT type=text name=rgb_g size=3 value=0 onChange="newRGB(0,'g')"><input type="Button" value="-" onClick="setRGB('g',-1)">
<font color="#0000FF">蓝</font> <input type="Button" value="+" onClick="setRGB('b',1)"><INPUT type=text name=rgb_b size=3 value=255 onChange="newRGB(0,'b')"><input type="Button" value="-" onClick="setRGB('b',-1)">

</td></tr>

<tr><td>
<TABLE BORDER=1 CELLSPACING=-1 CELLPADDING=1>
<TR>
<TD BGCOLOR="#FFFFFF"><a href="#" onClick="SetColor('FFFFFF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFFF00"><a href="#" onClick="SetColor('FFFF00');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFE000"><a href="#" onClick="SetColor('FFE000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFC000"><a href="#" onClick="SetColor('FFC000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFA000"><a href="#" onClick="SetColor('FFA000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF8000"><a href="#" onClick="SetColor('FF8000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF6000"><a href="#" onClick="SetColor('FF6000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF4000"><a href="#" onClick="SetColor('FF4000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF0000"><a href="#" onClick="SetColor('FF0000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#E00000"><a href="#" onClick="SetColor('E00000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#C00000"><a href="#" onClick="SetColor('C00000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFC0FF"><a href="#" onClick="SetColor('FFC0FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FFA0FF"><a href="#" onClick="SetColor('FFA0FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF80FF"><a href="#" onClick="SetColor('FF80FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF60FF"><a href="#" onClick="SetColor('FF60FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#FF00FF"><a href="#" onClick="SetColor('FF00FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#E000FF"><a href="#" onClick="SetColor('E000FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#C000FF"><a href="#" onClick="SetColor('C000FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A000FF"><a href="#" onClick="SetColor('A000FF');return false" onMouseOver="nomsg();return true"> </a></TD>
</tr><tr>
<TD BGCOLOR="#8000FF"><a href="#" onClick="SetColor('8000FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00FFFF"><a href="#" onClick="SetColor('00FFFF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00E0FF"><a href="#" onClick="SetColor('00E0FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00C0FF"><a href="#" onClick="SetColor('00C0FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00A0FF"><a href="#" onClick="SetColor('00A0FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#0080FF"><a href="#" onClick="SetColor('0080FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#0060FF"><a href="#" onClick="SetColor('0060FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#0000FF"><a href="#" onClick="SetColor('0000FF');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#0000E0"><a href="#" onClick="SetColor('0000E0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#0000C0"><a href="#" onClick="SetColor('0000C0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#D0FF00"><a href="#" onClick="SetColor('D0FF00');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A0FF00"><a href="#" onClick="SetColor('A0FF00');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#80FF00"><a href="#" onClick="SetColor('80FF00');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00FF00"><a href="#" onClick="SetColor('00FF00');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00E000"><a href="#" onClick="SetColor('00E000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00C000"><a href="#" onClick="SetColor('00C000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00A000"><a href="#" onClick="SetColor('00A000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#008000"><a href="#" onClick="SetColor('008000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#00A0A0"><a href="#" onClick="SetColor('00A0A0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A0A000"><a href="#" onClick="SetColor('A0A000');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A0A0A0"><a href="#" onClick="SetColor('A0A0A0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A0A0E0"><a href="#" onClick="SetColor('A0A0E0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#E0A0A0"><a href="#" onClick="SetColor('E0A0A0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#A0E0A0"><a href="#" onClick="SetColor('A0E0A0');return false" onMouseOver="nomsg();return true"> </a></TD>
<TD BGCOLOR="#000000"><a href="#" onClick="SetColor('000000');return false" onMouseOver="nomsg();return true"> </a></TD>
</TR>
</TABLE>
</td></tr>

<tr><td>
显示文字：<input type=text name="showstr" value="南京有线电视台" onChange="AddText()">
</td></tr>

<tr><td>
<input type=hidden name="tempVal" value="">
代码如下：<br>
<TEXTAREA wrap=soft name=code COLS=62 ROWS=6"></TEXTAREA>
</td></tr><tr><td>
<INPUT TYPE="button" VALUE="生成代码" onClick='GenTag(this.form)'>
<INPUT TYPE="button" VALUE="预览效果" onClick='AddText()'>
<INPUT TYPE="reset" VALUE="全部清除">
</td></tr></table>
</form>
</CENTER>
<SPAN ID="fsample" STYLE="position: absolute;left:280;top:460; color: black; font-weight: normal; font-size: 9pt">
<form name="fsample2">
起始颜色<input type=text name="startcolor" size=8 onfocus="this.blur()">
结束颜色<input type=text name="endcolor" size=8 onfocus="this.blur()">
</form>
</SPAN>

<SCRIPT LANGUAGE="JavaScript">
<!--
onload = myReset;
//-->
</SCRIPT>