JS取色器

<!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>颜色选择器</title>
</head>
<body>
    <p>
        <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 = null
            function initcolor(id) {
                var colorTable = ''
                for (i = 0; i < 2; i++) {
                    for (j = 0; j < 6; j++) {
                        colorTable = colorTable + '<tr height=15>'
                        colorTable = colorTable + '<td width=15 style="background-color:#000000">'
                        if (i == 0) {
                            colorTable = colorTable + '<td width=15 style="cursor:pointer;background-color:#' + ColorHex[j] + ColorHex[j] + ColorHex[j] + '" onclick="doclick(this.style.backgroundColor,' + id + ')">'
                        }
                        else {
                            colorTable = colorTable + '<td width=15 style="cursor:pointer;background-color:#' + SpColorHex[j] + '" onclick="doclick(this.style.backgroundColor,' + id + ')">'
                        }
                        colorTable = colorTable + '<td width=15 style="background-color:#000000">'
                        for (k = 0; k < 3; k++) {
                            for (l = 0; l < 6; l++) {
                                colorTable = colorTable + '<td width=15 style="cursor:pointer;background-color:#' + ColorHex[k + i * 3] + ColorHex[l] + ColorHex[j] + '" onclick="doclick(this.style.backgroundColor,' + id + ')">'
                            }
                        }
                    }
                }
                colorTable = '<table border="0" cellspacing="0" cellpadding="0" style="border:1px #000000 solid;border-bottom:none;border-collapse: collapse;337px;" bordercolor="000000">'
+ '<tr height=20><td colspan=21 bgcolor=#ffffff style="font:12px tahoma;padding-left:2px;">'
         + '<span style="float:right;padding-right:3px;cursor:pointer;" onclick="colorclose()">×关闭</span>'
+ '</td></table>'
+ '<table border="1" cellspacing="0" cellpadding="0" style="border-collapse: collapse" bordercolor="000000" style="cursor:pointer;">'
+ colorTable + '</table>';
                var tid = '';
                if (id == '1') {
                    tid = "txtvalue";
                }
                else if (id == '2') {
                    tid = "txt2";
                }
                document.getElementById("colorpane").innerHTML = colorTable;
                var current_x = document.getElementById(tid).offsetLeft + 2;
                var current_y = document.getElementById(tid).offsetTop + 20;
                document.getElementById("colorpane").style.left = current_x + "px";
                document.getElementById("colorpane").style.top = current_y + "px";
            }
            function doclick(obj, id) {
                if (id == '1') {
                    document.getElementById("txtvalue").value = obj;
                    document.getElementById("txtvalue").style.backgroundColor = obj;
                }
                else if (id == '2') {
                    document.getElementById("txt2").value = obj;
                    document.getElementById("txt2").style.backgroundColor = obj;
                }
            }
            function colorclose() {
                document.getElementById("colorpane").style.display = "none";
            }
            function coloropen(id) {
                initcolor(id);
                document.getElementById("colorpane").style.display = "";
            }
        </script>
    </p>
    <input id="txtvalue" type="text" onclick="coloropen(1)"   />
    <br />    <br />
    <input id="txt2" type="text" onclick="coloropen(2)" />
    <div id="colorpane" style="position: absolute; z-index: 999; display: none;">
    </div>
</body>
</html>

运行效果：

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原文地址：https://www.cnblogs.com/Cynosure/p/4168878.html