js调色板

作者：袖梨 2022-07-02

提示：您可以先修改部分代码再运行

<STYLE>.drag {
CURSOR: hand; POSITION: relative
}
</STYLE>
  <script>
var sPosition;
var showPerc=100;
document.onmousedown=dragLayer
document.onmouseup=new Function("dragMe=false")

var Color= new Array();
Color[0] = "00";
Color[1] = "11";
Color[2] = "22";
Color[3] = "33";
Color[4] = "44";
Color[5] = "55";
Color[6] = "66";
Color[7] = "77";
Color[8] = "88";
Color[9] = "99";
Color[10] = "AA";
Color[11] = "BB";
Color[12] = "CC";
Color[13] = "DD";
Color[14] = "EE";
Color[15] = "FF";

var rVal,gVal,bVal, cCol
function chgBg() {
	cCol = document.bgColor; rVal=cCol.substr(1,2); gVal=cCol.substr(3,2); bVal=cCol.substr(5,2);
	ind = Math.round(showPerc/16); if (ind < 0) ind = 0; if (ind > 15) ind=15;

if (kObj.id =="knobImg") document.bgColor="#"+Color[ind]+gVal+bVal;
	if (kObj.id =="knobImg1")  document.bgColor="#"+rVal+Color[ind]+bVal;
	if (kObj.id =="knobImg2")  document.bgColor="#"+rVal+gVal+Color[ind];
}

var dragMe=false, kObj, yPos,direction
function moveLayer() {
if (event.button==1 && dragMe) {
	oldY = kObj.style.pixelTop; kObj.style.pixelTop=temp2+event.clientY-yPos; 
	if (kObj.style.pixelTop > oldY) direction="dn"; else direction="up";
	if (kObj.style.pixelTop < 2 && direction=="up") {kObj.style.pixelTop=2; direction="dn";}
	if (kObj.style.pixelTop > 102 && direction=="dn") {kObj.style.pixelTop=102; direction="up";}
	sPosition=kObj.style.pixelTop; showPerc = (perCent[0].checked) ? sPosition-2 : (sPosition-2)/2*5; 
	chgBg(); 
	return false; }
}
function dragLayer() {
if (!document.all) return;
if (event.srcElement.className=="drag")	{dragMe=true; kObj=event.srcElement; temp2=kObj.style.pixelTop; yPos=event.clientY; document.onmousemove=moveLayer; }
}
</SCRIPT>
  现在本例子只简单的改变了背景的颜色，也可以将这使用方法应用<br>
  到如聊天室等程序上，可以让你的应用增添色彩. </div>
<p></P>
            <DIV id=outerLyr 
            style="BACKGROUND-COLOR: #000000;  LEFT: 233px; POSITION: absolute; TOP: 111px;  Z-INDEX: 1"><IMG 
            class=drag id=knobImg src="https://img.111cn.net../wybj/images/knob.jpg" 
            style=" LEFT: 2px; TOP: 100px;  Z-INDEX: 3">

<DIV id=innerLyr 
            style="BACKGROUND-COLOR: #777777;  LEFT: 2px; POSITION: absolute; TOP: 2px;  Z-INDEX: 2">
            <DIV id=barLyr 
            style="BACKGROUND-COLOR: #000000;  LEFT: 9px; POSITION: absolute; TOP: 5px;  Z-INDEX: 1"></DIV></DIV></DIV>
            <DIV id=outerLyr1 
            style="BACKGROUND-COLOR: #000000;  LEFT: 268px; POSITION: absolute; TOP: 111px;  Z-INDEX: 1"><IMG 
            class=drag id=knobImg1 src="https://img.111cn.net../wybj/images/knob.jpg" 
            style=" LEFT: 2px; TOP: 100px;  Z-INDEX: 3">

<DIV id=innerLyr1 
            style="BACKGROUND-COLOR: #777777;  LEFT: 2px; POSITION: absolute; TOP: 2px;  Z-INDEX: 2">
            <DIV id=barLyr1 
            style="BACKGROUND-COLOR: #000000;  LEFT: 9px; POSITION: absolute; TOP: 5px;  Z-INDEX: 1"></DIV></DIV></DIV>
            <DIV id=outerLyr2 
            style="BACKGROUND-COLOR: #000000;  LEFT: 300px; POSITION: absolute; TOP: 111px;  Z-INDEX: 1"><IMG 
            class=drag id=knobImg2 src="https://img.111cn.net../wybj/images/knob.jpg" 
            style=" LEFT: 2px; TOP: 100px;  Z-INDEX: 3">

<DIV id=innerLyr2 
            style="BACKGROUND-COLOR: #777777;  LEFT: 2px; POSITION: absolute; TOP: 2px;  Z-INDEX: 2">
            <DIV id=barLyr2 
            style="BACKGROUND-COLOR: #000000;  LEFT: 9px; POSITION: absolute; TOP: 5px;  Z-INDEX: 1"></DIV></DIV></DIV>
            <P><INPUT name=perCent type=radio value=false> Prozent <INPUT 
            CHECKED name=perCent type=radio value=true> 255 </P>

提示：您可以先修改部分代码再运行

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