jQuery 添加水印

    <script src="../../../../AJs/jquery.min.js"></script>

    <script type="text/javascript">

        $(document).ready(function () {

            var watermark_txt = "<%=this.CurrenUser.ORGNAME%>";         //水印文字

            watermark({ "watermarl_element": "body_1", "watermark_txt": watermark_txt });       //"body_1"是dom元素上Id属性

        });

        function watermark(settings) {

            //默认设置

            var defaultSettings = {

                watermarl_element: "body",

                watermark_txt: "",

                watermark_x: 10,//水印起始位置x轴坐标

                watermark_y: 10,//水印起始位置Y轴坐标

                watermark_rows: 2000,//水印行数

                watermark_cols: 2000,//水印列数

                watermark_x_space: 50,//水印x轴间隔

                watermark_y_space: 50,//水印y轴间隔

                watermark_color: '#d7d7d7',//水印字体颜色

                watermark_alpha: 0.5,//水印透明度

                watermark_fontsize: '20px',//水印字体大小

                watermark_font: '微软雅黑',//水印字体

                watermark_width: 200,//水印宽度

                watermark_height: 50,//水印长度

                watermark_angle: 15//水印倾斜度数

            };

            //采用配置项替换默认值，作用类似jquery.extend

            if (arguments.length === 1 && typeof arguments[0] === "object") {

                var src = arguments[0] || {};

                for (key in src) {

                    if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) {

                        continue;

                    } else if (src[key]) {

                        defaultSettings[key] = src[key];

                    }

                }

            }

            var oTemp = document.createDocumentFragment();

            var maskElement = document.getElementById(defaultSettings.watermarl_element) || document.body;

            //获取页面最大宽度

            var page_width = Math.max(maskElement.scrollWidth, maskElement.clientWidth);

            //获取页面最大高度

            var page_height = Math.max(maskElement.scrollHeight, maskElement.clientHeight, maskElement.scrollTop);

            //水印数量自适应元素区域尺寸

            defaultSettings.watermark_cols = Math.ceil(page_width / (defaultSettings.watermark_x_space + defaultSettings.watermark_width));

            defaultSettings.watermark_rows = Math.ceil(page_height / (defaultSettings.watermark_y_space + defaultSettings.watermark_height));

            var x;

            var y;

            for (var i = 0; i < defaultSettings.watermark_rows; i++) {

                y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;

                for (var j = 0; j < defaultSettings.watermark_cols; j++) {

                    x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;

                    var mask_div = document.createElement('div');

                    mask_div.id = 'mask_div' + i + j;

                    mask_div.className = 'mask_div';

                    //mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));

                    mask_div.innerHTML = (defaultSettings.watermark_txt);

                    //设置水印div倾斜显示

                    mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";

                    mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";

                    mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";

                    mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";

                    mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";

                    mask_div.style.visibility = "";

                    mask_div.style.position = "absolute";

                    mask_div.style.left = x + 'px';

                    mask_div.style.top = y + 'px';

                    mask_div.style.overflow = "hidden";

                    mask_div.style.zIndex = "1029"; // 9999

                    // pointer-events:none  让水印不遮挡页面的点击事件

                    mask_div.style.pointerEvents = 'none';

                    // 设置边框

                    // mask_div.style.border="solid #eee 1px";

                    // 兼容IE9以下的透明度设置

                    mask_div.style.filter = "alpha(opacity=50)";

                    mask_div.style.opacity = defaultSettings.watermark_alpha;

                    mask_div.style.fontSize = defaultSettings.watermark_fontsize;

                    mask_div.style.fontFamily = defaultSettings.watermark_font;

                    mask_div.style.color = defaultSettings.watermark_color;

                    mask_div.style.textAlign = "center";

                    mask_div.style.width = defaultSettings.watermark_width + 'px';

                    mask_div.style.height = defaultSettings.watermark_height + 'px';

                    mask_div.style.display = "block";

                    oTemp.appendChild(mask_div);

                };

            };

            maskElement.appendChild(oTemp);

        }

    </script>

jQuery 添加水印的相关教程结束。