from: 颜色选择器 colorpicker
http://jscolor.com/
http://dematte.at/colorPicker/
http://www.free-color-picker.com/color-picker-samples.php
http://www.nogray.com/color_picker.php
http://www.mattkruse.com/javascript/colorpicker/

ColorPicker2.js代码
复制代码 代码如下:
// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download.
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

/* SOURCE FILE: AnchorPosition.js */
function getAnchorPosition(anchorname){var useWindow=false;var coordinates=new Object();var x=0,y=0;var use_gebi=false, use_css=false, use_layers=false;if(document.getElementById){use_gebi=true;}else if(document.all){use_css=true;}else if(document.layers){use_layers=true;}if(use_gebi && document.all){x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);}else if(use_gebi){var o=document.getElementById(anchorname);x=AnchorPosition_getPageOffsetLeft(o);y=AnchorPosition_getPageOffsetTop(o);}else if(use_css){x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);}else if(use_layers){var found=0;for(var i=0;i<document.anchors.length;i++){if(document.anchors[i].name==anchorname){found=1;break;}}if(found==0){coordinates.x=0;coordinates.y=0;return coordinates;}x=document.anchors[i].x;y=document.anchors[i].y;}else{coordinates.x=0;coordinates.y=0;return coordinates;}coordinates.x=x;coordinates.y=y;return coordinates;}
function getAnchorWindowPosition(anchorname){var coordinates=getAnchorPosition(anchorname);var x=0;var y=0;if(document.getElementById){if(isNaN(window.screenX)){x=coordinates.x-document.body.scrollLeft+window.screenLeft;y=coordinates.y-document.body.scrollTop+window.screenTop;}else{x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;}}else if(document.all){x=coordinates.x-document.body.scrollLeft+window.screenLeft;y=coordinates.y-document.body.scrollTop+window.screenTop;}else if(document.layers){x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;}coordinates.x=x;coordinates.y=y;return coordinates;}
function AnchorPosition_getPageOffsetLeft(el){var ol=el.offsetLeft;while((el=el.offsetParent) != null){ol += el.offsetLeft;}return ol;}
function AnchorPosition_getWindowOffsetLeft(el){return AnchorPosition_getPageOffsetLeft(el)-document.body.scrollLeft;}
function AnchorPosition_getPageOffsetTop(el){var ot=el.offsetTop;while((el=el.offsetParent) != null){ot += el.offsetTop;}return ot;}
function AnchorPosition_getWindowOffsetTop(el){return AnchorPosition_getPageOffsetTop(el)-document.body.scrollTop;}

/* SOURCE FILE: PopupWindow.js */
function PopupWindow_getXYPosition(anchorname){var coordinates;if(this.type == "WINDOW"){coordinates = getAnchorWindowPosition(anchorname);}else{coordinates = getAnchorPosition(anchorname);}this.x = coordinates.x;this.y = coordinates.y;}
function PopupWindow_setSize(width,height){this.width = width;this.height = height;}
function PopupWindow_populate(contents){this.contents = contents;this.populated = false;}
function PopupWindow_setUrl(url){this.url = url;}
function PopupWindow_setWindowProperties(props){this.windowProperties = props;}
function PopupWindow_refresh(){if(this.divName != null){if(this.use_gebi){document.getElementById(this.divName).innerHTML = this.contents;}else if(this.use_css){document.all[this.divName].innerHTML = this.contents;}else if(this.use_layers){var d = document.layers[this.divName];d.document.open();d.document.writeln(this.contents);d.document.close();}}else{if(this.popupWindow != null && !this.popupWindow.closed){if(this.url!=""){this.popupWindow.location.href=this.url;}else{this.popupWindow.document.open();this.popupWindow.document.writeln(this.contents);this.popupWindow.document.close();}this.popupWindow.focus();}}}
function PopupWindow_showPopup(anchorname){this.getXYPosition(anchorname);this.x += this.offsetX;this.y += this.offsetY;if(!this.populated &&(this.contents != "")){this.populated = true;this.refresh();}if(this.divName != null){if(this.use_gebi){document.getElementById(this.divName).style.left = this.x + "px";document.getElementById(this.divName).style.top = this.y;document.getElementById(this.divName).style.visibility = "visible";}else if(this.use_css){document.all[this.divName].style.left = this.x;document.all[this.divName].style.top = this.y;document.all[this.divName].style.visibility = "visible";}else if(this.use_layers){document.layers[this.divName].left = this.x;document.layers[this.divName].top = this.y;document.layers[this.divName].visibility = "visible";}}else{if(this.popupWindow == null || this.popupWindow.closed){if(this.x<0){this.x=0;}if(this.y<0){this.y=0;}if(screen && screen.availHeight){if((this.y + this.height) > screen.availHeight){this.y = screen.availHeight - this.height;}}if(screen && screen.availWidth){if((this.x + this.width) > screen.availWidth){this.x = screen.availWidth - this.width;}}var avoidAboutBlank = window.opera ||( document.layers && !navigator.mimeTypes['*']) || navigator.vendor == 'KDE' ||( document.childNodes && !document.all && !navigator.taintEnabled);this.popupWindow = window.open(avoidAboutBlank?"":"about:blank","window_"+anchorname,this.windowProperties+",width="+this.width+",height="+this.height+",screenX="+this.x+",left="+this.x+",screenY="+this.y+",top="+this.y+"");}this.refresh();}}
function PopupWindow_hidePopup(){if(this.divName != null){if(this.use_gebi){document.getElementById(this.divName).style.visibility = "hidden";}else if(this.use_css){document.all[this.divName].style.visibility = "hidden";}else if(this.use_layers){document.layers[this.divName].visibility = "hidden";}}else{if(this.popupWindow && !this.popupWindow.closed){this.popupWindow.close();this.popupWindow = null;}}}
function PopupWindow_isClicked(e){if(this.divName != null){if(this.use_layers){var clickX = e.pageX;var clickY = e.pageY;var t = document.layers[this.divName];if((clickX > t.left) &&(clickX < t.left+t.clip.width) &&(clickY > t.top) &&(clickY < t.top+t.clip.height)){return true;}else{return false;}}else if(document.all){var t = window.event.srcElement;while(t.parentElement != null){if(t.id==this.divName){return true;}t = t.parentElement;}return false;}else if(this.use_gebi && e){var t = e.originalTarget;while(t.parentNode != null){if(t.id==this.divName){return true;}t = t.parentNode;}return false;}return false;}return false;}
function PopupWindow_hideIfNotClicked(e){if(this.autoHideEnabled && !this.isClicked(e)){this.hidePopup();}}
function PopupWindow_autoHide(){this.autoHideEnabled = true;}
function PopupWindow_hidePopupWindows(e){for(var i=0;i<popupWindowObjects.length;i++){if(popupWindowObjects[i] != null){var p = popupWindowObjects[i];p.hideIfNotClicked(e);}}}
function PopupWindow_attachListener(){if(document.layers){document.captureEvents(Event.MOUSEUP);}window.popupWindowOldEventListener = document.onmouseup;if(window.popupWindowOldEventListener != null){document.onmouseup = new Function("window.popupWindowOldEventListener();PopupWindow_hidePopupWindows();");}else{document.onmouseup = PopupWindow_hidePopupWindows;}}
function PopupWindow(){if(!window.popupWindowIndex){window.popupWindowIndex = 0;}if(!window.popupWindowObjects){window.popupWindowObjects = new Array();}if(!window.listenerAttached){window.listenerAttached = true;PopupWindow_attachListener();}this.index = popupWindowIndex++;popupWindowObjects[this.index] = this;this.divName = null;this.popupWindow = null;this.width=0;this.height=0;this.populated = false;this.visible = false;this.autoHideEnabled = false;this.contents = "";this.url="";this.windowProperties="toolbar=no,location=no,status=no,menubar=no,scrollbars=auto,resizable,alwaysRaised,dependent,titlebar=no";if(arguments.length>0){this.type="DIV";this.divName = arguments[0];}else{this.type="WINDOW";}this.use_gebi = false;this.use_css = false;this.use_layers = false;if(document.getElementById){this.use_gebi = true;}else if(document.all){this.use_css = true;}else if(document.layers){this.use_layers = true;}else{this.type = "WINDOW";}this.offsetX = 0;this.offsetY = 0;this.getXYPosition = PopupWindow_getXYPosition;this.populate = PopupWindow_populate;this.setUrl = PopupWindow_setUrl;this.setWindowProperties = PopupWindow_setWindowProperties;this.refresh = PopupWindow_refresh;this.showPopup = PopupWindow_showPopup;this.hidePopup = PopupWindow_hidePopup;this.setSize = PopupWindow_setSize;this.isClicked = PopupWindow_isClicked;this.autoHide = PopupWindow_autoHide;this.hideIfNotClicked = PopupWindow_hideIfNotClicked;}


/* SOURCE FILE: ColorPicker2.js */

ColorPicker_targetInput = null;
function ColorPicker_writeDiv(){document.writeln("<DIV ID=\"colorPickerDiv\" STYLE=\"position:absolute;visibility:hidden;\"> </DIV>");}
function ColorPicker_show(anchorname){this.showPopup(anchorname);}
function ColorPicker_pickColor(color,obj){obj.hidePopup();pickColor(color);}
function pickColor(color){if(ColorPicker_targetInput==null){alert("Target Input is null, which means you either didn't use the 'select' function or you have no defined your own 'pickColor' function to handle the picked color!");return;}ColorPicker_targetInput.value = color;}
function ColorPicker_select(inputobj,linkname){if(inputobj.type!="text" && inputobj.type!="hidden" && inputobj.type!="textarea"){alert("colorpicker.select: Input object passed is not a valid form input object");window.ColorPicker_targetInput=null;return;}window.ColorPicker_targetInput = inputobj;this.show(linkname);}
function ColorPicker_highlightColor(c){var thedoc =(arguments.length>1)?arguments[1]:window.document;var d = thedoc.getElementById("colorPickerSelectedColor");d.style.backgroundColor = c;d = thedoc.getElementById("colorPickerSelectedColorValue");d.innerHTML = c;}
function ColorPicker(){var windowMode = false;if(arguments.length==0){var divname = "colorPickerDiv";}else if(arguments[0] == "window"){var divname = '';windowMode = true;}else{var divname = arguments[0];}if(divname != ""){var cp = new PopupWindow(divname);}else{var cp = new PopupWindow();cp.setSize(225,250);}cp.currentValue = "#FFFFFF";cp.writeDiv = ColorPicker_writeDiv;cp.highlightColor = ColorPicker_highlightColor;cp.show = ColorPicker_show;cp.select = ColorPicker_select;var colors = new Array("#000000","#000033","#000066","#000099","#0000CC","#0000FF","#330000","#330033","#330066","#330099","#3300CC",
"#3300FF","#660000","#660033","#660066","#660099","#6600CC","#6600FF","#990000","#990033","#990066","#990099",
"#9900CC","#9900FF","#CC0000","#CC0033","#CC0066","#CC0099","#CC00CC","#CC00FF","#FF0000","#FF0033","#FF0066",
"#FF0099","#FF00CC","#FF00FF","#003300","#003333","#003366","#003399","#0033CC","#0033FF","#333300","#333333",
"#333366","#333399","#3333CC","#3333FF","#663300","#663333","#663366","#663399","#6633CC","#6633FF","#993300",
"#993333","#993366","#993399","#9933CC","#9933FF","#CC3300","#CC3333","#CC3366","#CC3399","#CC33CC","#CC33FF",
"#FF3300","#FF3333","#FF3366","#FF3399","#FF33CC","#FF33FF","#006600","#006633","#006666","#006699","#0066CC",
"#0066FF","#336600","#336633","#336666","#336699","#3366CC","#3366FF","#666600","#666633","#666666","#666699",
"#6666CC","#6666FF","#996600","#996633","#996666","#996699","#9966CC","#9966FF","#CC6600","#CC6633","#CC6666",
"#CC6699","#CC66CC","#CC66FF","#FF6600","#FF6633","#FF6666","#FF6699","#FF66CC","#FF66FF","#009900","#009933",
"#009966","#009999","#0099CC","#0099FF","#339900","#339933","#339966","#339999","#3399CC","#3399FF","#669900",
"#669933","#669966","#669999","#6699CC","#6699FF","#999900","#999933","#999966","#999999","#9999CC","#9999FF",
"#CC9900","#CC9933","#CC9966","#CC9999","#CC99CC","#CC99FF","#FF9900","#FF9933","#FF9966","#FF9999","#FF99CC",
"#FF99FF","#00CC00","#00CC33","#00CC66","#00CC99","#00CCCC","#00CCFF","#33CC00","#33CC33","#33CC66","#33CC99",
"#33CCCC","#33CCFF","#66CC00","#66CC33","#66CC66","#66CC99","#66CCCC","#66CCFF","#99CC00","#99CC33","#99CC66",
"#99CC99","#99CCCC","#99CCFF","#CCCC00","#CCCC33","#CCCC66","#CCCC99","#CCCCCC","#CCCCFF","#FFCC00","#FFCC33",
"#FFCC66","#FFCC99","#FFCCCC","#FFCCFF","#00FF00","#00FF33","#00FF66","#00FF99","#00FFCC","#00FFFF","#33FF00",
"#33FF33","#33FF66","#33FF99","#33FFCC","#33FFFF","#66FF00","#66FF33","#66FF66","#66FF99","#66FFCC","#66FFFF",
"#99FF00","#99FF33","#99FF66","#99FF99","#99FFCC","#99FFFF","#CCFF00","#CCFF33","#CCFF66","#CCFF99","#CCFFCC",
"#CCFFFF","#FFFF00","#FFFF33","#FFFF66","#FFFF99","#FFFFCC","#FFFFFF");var total = colors.length;var width = 18;var cp_contents = "";var windowRef =(windowMode)?"window.opener.":"";if(windowMode){cp_contents += "<HTML><HEAD><TITLE>Select Color</TITLE></HEAD>";cp_contents += "<BODY MARGINWIDTH=0 MARGINHEIGHT=0 LEFTMARGIN=0 TOPMARGIN=0><CENTER>";}cp_contents += "<TABLE BORDER=1 CELLSPACING=1 CELLPADDING=0>";var use_highlight =(document.getElementById || document.all)?true:false;for(var i=0;i<total;i++){if((i % width) == 0){cp_contents += "<TR>";}if(use_highlight){var mo = 'onMouseOver="'+windowRef+'ColorPicker_highlightColor(\''+colors[i]+'\',window.document)"';}else{mo = "";}cp_contents += '<TD BGCOLOR="'+colors[i]+'"><FONT SIZE="-3"><A HREF="#" onClick="'+windowRef+'ColorPicker_pickColor(\''+colors[i]+'\','+windowRef+'window.popupWindowObjects['+cp.index+']);return false;" '+mo+' STYLE="text-decoration:none;">&nbsp;&nbsp;&nbsp;</A></FONT></TD>';if( ((i+1)>=total) ||(((i+1) % width) == 0)){cp_contents += "</TR>";}}if(document.getElementById){var width1 = Math.floor(width/2);var width2 = width = width1;cp_contents += "<TR><TD COLSPAN='"+width1+"' BGCOLOR='#ffffff' ID='colorPickerSelectedColor'>&nbsp;</TD><TD COLSPAN='"+width2+"' ALIGN='CENTER' ID='colorPickerSelectedColorValue'>#FFFFFF</TD></TR>";}cp_contents += "</TABLE>";if(windowMode){cp_contents += "</CENTER></BODY></HTML>";}cp.populate(cp_contents+"\n");cp.offsetY = 25;cp.autoHide();return cp;}

复制代码 代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<title>颜色选择器 Color Picker,Internet Explorer,Firefox,Opera,Safar,Ace Explorer,Avant Browser,Flock,Google Chrome,Konqueror,Netscape,SeaMonkey </title>
<meta name="Author" content="Geovin Du 塗聚文"/>
<meta name="Keywords" content="Geovin Du 塗聚文"/>
<meta name="Description" content="Geovin Du 塗聚文"/>
<script type="text/javascript" language="javascript" src="/UploadFiles/2021-04-02/ColorPicker2.js"><script type="text/javascript" language="javascript">
var cp = new ColorPicker('window'); // Popup window
var cp2 = new ColorPicker(); // DIV style
</script>
</head>
<body>
<form>
<table border="1">
<tr>
<td>
This popup uses a "window" popup. Use this<br/>
For browsers that don't support DHTML.<br/>
Color: <input type="text" name="color" size="20" value=""/> <a href="#" onclick="cp.select(document.forms[0].color,'pick');return false;" name="pick" id="pick">Pick</a>
</td>
</tr>
</table>
<br/>
<table border="1">
<tr>
<td>
This popup uses a DHTML "layer". It looks<br/>
nicer, but won't work in older browsers and<br/>
The color popup won't display over some form<br/>
elements in some browsers!<br/>
Color: <input type="text" name="color2" size="20" value=""/> <a href="#" onclick="cp2.select(document.forms[0].color2,'pick2');return false;" name="pick2" id="pick2">Pick</a>
</td>
</tr>
</table>
</form>
<script type="text/javascript" language="javascript">cp.writeDiv()</script>
</body>
</html>