JS实现的一个颜色选择框
<!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 http-equiv="Content-Type" content="text/html; charset=gb2312"><title>颜色对话框</title><script type="text/javascript" language="javascript"><!--var ColorHex=new Array('00','33','66','99','CC','FF')var SpColorHex=new Array('FF0000','00FF00','0000FF','FFFF00','00FFFF','FF00FF')var current=nullfunction intocolor(){var colorTable=''for (i=0;i<2;i++){for (j=0;j<6;j++){colorTable=colorTable+'<tr height=12>'colorTable=colorTable+'<td width=11 style="background-color:#000000">'if (i==0){colorTable=colorTable+'<td width=11 style="background-color:#'+ColorHex+ColorHex+ColorHex+'">'} else{colorTable=colorTable+'<td width=11 style="background-color:#'+SpColorHex+'">'} colorTable=colorTable+'<td width=11 style="background-color:#000000">'for (k=0;k<3;k++){for (l=0;l<6;l++){colorTable=colorTable+'<td width=11 style="background-color:#'+ColorHex+ColorHex+ColorHex+'">'}}}}colorTable='<br/><br/><br/><br/><br/><br/><br/><br/><br/><table width=253 border="0" cellspacing="0" cellpadding="0" style="border:1px #000000 solid;border-bottom:none;border-collapse: collapse" bordercolor="000000">'+'<tr height=30><td colspan=21 bgcolor=#cccccc>'+'<table cellpadding="0" cellspacing="1" border="0" style="border-collapse: collapse">'+'<tr><td width="3"><input type="text" name="DisColor" size="6" disabled style="border:solid 1px #000000;background-color:#ffff00"></td>'+'<td width="3"><td><input type="text" name="HexColor" size="7" style="border:inset 1px;font-family:Arial;" value="#000000"></td></tr></table></td></table>'+'<table border="1" cellspacing="0" cellpadding="0" style="border-collapse: collapse" bordercolor="000000"onmouseout="doOut()"style="cursor:hand;">'+colorTable+'</table>'; colorpanel.innerHTML=colorTable}//将颜色值字母大写function doOver() {if ((event.srcElement.tagName=="TD") && (current!=event.srcElement)) {if (current!=null){current.style.backgroundColor = current._background} event.srcElement._background = event.srcElement.style.backgroundColorDisColor.style.backgroundColor = event.srcElement.style.backgroundColorHexColor.value = event.srcElement.style.backgroundColor.toUpperCase();event.srcElement.style.backgroundColor = "white"current = event.srcElement}}//将颜色值字母大写function doOut() {if (current!=null) current.style.backgroundColor = current._background.toUpperCase();}function doclick(){if (event.srcElement.tagName == "TD"){var clr = event.srcElement._background;clr = clr.toUpperCase(); //将颜色值大写if (targetElement){//给目标无件设置颜色值targetElement.value = clr;}DisplayClrDlg(false);return clr;}}--></script></head><body><div id="colorpanel" style="position:absolute;display:none;width:253px;height:177px;"></div>请点击文本框：<input type="text" size="8" alt="clrDlg" readonly><script type="text/javascript" language="javascript"><!--//应用颜色对话框必须注意两点：//颜色对话框id : colorpanel 不能变//触发颜色对话框显示的文本框（或其它）必须有alt 属性，且值为clrDlg（不能忽略大小写）var targetElement = null; //接收颜色对话框返回值的元素//当点下鼠标时，确定显示还是隐藏颜色对话框//点击颜色对话框以外其它区域时，让对话框隐藏//点击颜色对话框色区时，由doclick 函数来隐藏对话框function OnDocumentClick(){var srcElement = event.srcElement;if (srcElement.alt == "clrDlg"){//显示颜色对话框targetElement = event.srcElement;DisplayClrDlg(true);}else{//是否是在颜色对话框上点击的while (srcElement && srcElement.id!="colorpanel"){srcElement = srcElement.parentElement;}if (!srcElement){//不是在颜色对话框上点击的DisplayClrDlg(false);}}}//显示颜色对话框//display 决定显示还是隐藏//自动确定显示位置function DisplayClrDlg(display){var clrPanel = document.getElementById("colorpanel");if (display){var left = document.body.scrollLeft + event.clientX;var top = document.body.scrollTop + event.clientY;if (event.clientX+clrPanel.style.pixelWidth > document.body.clientWidth){//对话框显示在鼠标右方时，会出现遮挡，将其显示在鼠标左方left -= clrPanel.style.pixelWidth;}if (event.clientY+clrPanel.style.pixelHeight > document.body.clientHeight){//对话框显示在鼠标下方时，会出现遮挡，将其显示在鼠标上方top -= clrPanel.style.pixelHeight;}clrPanel.style.pixelLeft = left;clrPanel.style.pixelTop = top;clrPanel.style.display = "block";}else{clrPanel.style.display = "none";}}document.body.onclick = OnDocumentClick;document.body.onload = intocolor;//--></script></body></html>
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