如何得到鼠标所在处的颜色值？

你去下载一个ColorSPY.exe就行了，很好用的！

解决方案 »

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<body>
<input id='Info1'><br>
<input id='Info2'><br>
<input id='Info3'><br>
<span id=ColorDiv style='width:200;height:200;'></span><script>var iW = '70';//共有6种颜色，每种颜色的宽为iW。iW*6为色带的宽。
var iH = '400';//iH为色带的高。/*
Dewin 写于 2002-11-22 22:48
*/var H,S,V;function HSV(){
var pX = event.offsetX;
var pY = event.offsetY;
var HalfH = parseInt(iH/2);
H = parseInt(pX*360/(iW*6));
if(event.offsetY < HalfH){
        S = pY/HalfH;
        V = 1;
        }
else{
        S = 1;
        V = (iH-pY)/HalfH;
        }
Info1.value = 'H:'+H+'  S:'+parseInt(S*100)+'%   V:'+parseInt(V*100)+'%';
HSVtoRGB();
RGBtoHTML();
}var R,G,B;function HSVtoRGB(){
var r,g,b;
var k = (H%60)/60;
var c1 = V*(1-S);
var c2 = V*(1-S*k);
var c3 = V*(1-S*(1-k));
switch(parseInt(H/60)){
        case 0 : r=V,g=c3;b=c1; break;
        case 1 : r=c2,g=V;b=c1; break;
        case 2 : r=c1,g=V;b=c3; break;
        case 3 : r=c1,g=c2;b=V; break;
        case 4 : r=c3,g=c1;b=V; break;
        case 5 : r=V,g=c1;b=c2; break;
        }
R = parseInt(r*255);
G = parseInt(g*255);
B = parseInt(b*255);
Info2.value = 'R:'+R+'  G:'+G+'   B:'+B;
}function RGBtoHTML(){
var r=(R>=16)?R.toString(16):('0'+R.toString(16));
var g=(G>=16)?G.toString(16):('0'+G.toString(16));
var b=(B>=16)?B.toString(16):('0'+B.toString(16));
var rgb=r+g+b;
Info3.value='HTML #'+rgb.toUpperCase();
ColorDiv.style.background = '#'+rgb;
}/*
Dewin 写于 2002-08-17 10:37
*/
function window.onload(){
var iHtml = '';
var iL = (document.body.offsetWidth-6*iW)/2;
var iT = (document.body.offsetHeight-iH)/2;
var RainBow = [255,0,0,  255,255,0,  0,255,0,  0,255,255,  0,0,255,  255,0,255,  255,0,0];
for(var i=0;i<6;i++){
        var R1 = RainBow[i*3];
        var G1 = RainBow[i*3+1];
        var B1 = RainBow[i*3+2];
        var R2 = RainBow[(i+1)*3];
        var G2 = RainBow[(i+1)*3+1];
        var B2 = RainBow[(i+1)*3+2];
        iHtml += "<span style='position:absolute;left:"+(i*iW+iL)+";top:"+iT+";width:"+iW+";height:"+iH+";background:rgb("+R1+","+G1+","+B1+");'></span><span style='position:absolute;left:"+(i*iW+iL)+";top:"+iT+";width:"+iW+";height:"+iH+";background:rgb("+R2+","+G2+","+B2+");filter:alpha(opacity=0,finishopacity=100,Style=1);'></span>"
        }
iHtml += "<span style=position:absolute;left:"+iL+";top:"+iT+";width:"+iW*6+";height:"+iH/2+";background:rgb(255,255,255);filter:alpha(opacity=100,finishOpacity=0,style=1,starty=0,finishy=100,startx=0,finishx=0)></span><span style=position:absolute;left:"+iL+";top:"+(iT+iH/2)+";width:"+iW*6+";height:"+iH/2+";background:rgb(0,0,0);filter:alpha(opacity=0,finishOpacity=100,style=1,starty=0,finishy=100,startx=0,finishx=0)></span><span style='position:absolute;left:"+iL+";top:"+iT+";width:"+iW*6+";height:"+iH+";' onmousemove=HSV()></span>"
document.body.innerHTML += iHtml;
}
</script>