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给原生html中添加水印遮罩层的实现示例
ID:16167 / 打印效果图
代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>水印遮罩</title> </head> <style> .watermark_mask { position: fixed; top: 10px; } .hello { width: 500px; height: 2048px; margin: 0 auto; background-color: pink; } </style> <body> <div class="hello"> Hello World <div style="margin-top: 600px;">Hello World 2</div> <div style="margin-top: 1200px;">Hello World 3</div> </div> <div id="watermarkId" class="watermark_mask"></div> <script> const watermarkId = "watermarkId"; // 水印遮罩函数 function watermarkUtils(settings, id) { //默认设置 var defaultSettings={ watermark_txt: "text", watermark_x: 10,//水印起始位置x轴坐标 watermark_y: 20,//水印起始位置Y轴坐标 watermark_rows: 55,//水印行数 watermark_cols: 55,//水印列数 watermark_x_space: 10,//水印x轴间隔 watermark_y_space: 10,//水印y轴间隔 watermark_color: '#000000',//水印字体颜色 watermark_alpha: 0.2,//水印透明度 watermark_fontsize: '15px',//水印字体大小 watermark_font: '微软雅黑',//水印字体 watermark_width: 50,//水印宽度 watermark_height: 20,//水印长度 watermark_angle: 25//水印倾斜度数 }; //采用配置项替换默认值，作用类似jquery.extend if(typeof settings === "object") { var src = settings; for(let 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 oTemp = document.createElement("div"); //获取页面最大宽度 var page_width = Math.max(document.body.scrollWidth,document.body.clientWidth); //获取页面最大长度 var page_height = Math.max(document.body.scrollHeight,document.body.clientHeight); //如果将水印列数设置为0，或水印列数设置过大，超过页面最大宽度，则重新计算水印列数和水印x轴间隔 if (defaultSettings.watermark_cols == 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width *defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) { defaultSettings.watermark_cols = parseInt((page_width-defaultSettings.watermark_x+defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space)); defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1)); } //如果将水印行数设置为0，或水印行数设置过大，超过页面最大长度，则重新计算水印行数和水印y轴间隔 if (defaultSettings.watermark_rows == 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) { defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space)); defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1)); } 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.appendChild(document.createTextNode(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"; //选不中 mask_div.style.left = x + 'px'; mask_div.style.top = y + 'px'; mask_div.style.overflow = "hidden"; mask_div.style.zIndex = "9999"; mask_div.style.pointerEvents = "none"; //mask_div.style.border="solid #eee 1px"; mask_div.style.opacity = defaultSettings.watermark_alpha; mask_div.style.fontSize = defaultSettings.watermark_fontsize; 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); }; }; // document.body.appendChild(oTemp); try { // console.log(document.getElementById(id), "document.getElementById(id)"); document.getElementById(id).appendChild(oTemp); } catch(error) { console.error(error, "遮罩异常"); } }; watermarkUtils({ watermark_txt: "9527", watermark_width: 60, watermark_fontsize: "14px" }, watermarkId); </script> </body> </html> 核心代码
const watermarkId = "watermarkId"; // 水印遮罩函数 function watermarkUtils(settings, id) { //默认设置 var defaultSettings={ watermark_txt: "text", watermark_x: 10,//水印起始位置x轴坐标 watermark_y: 20,//水印起始位置Y轴坐标 watermark_rows: 55,//水印行数 watermark_cols: 55,//水印列数 watermark_x_space: 10,//水印x轴间隔 watermark_y_space: 10,//水印y轴间隔 watermark_color: '#000000',//水印字体颜色 watermark_alpha: 0.2,//水印透明度 watermark_fontsize: '15px',//水印字体大小 watermark_font: '微软雅黑',//水印字体 watermark_width: 50,//水印宽度 watermark_height: 20,//水印长度 watermark_angle: 25//水印倾斜度数 }; //采用配置项替换默认值，作用类似jquery.extend if(typeof settings === "object") { var src = settings; for(let 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 oTemp = document.createElement("div"); //获取页面最大宽度 var page_width = Math.max(document.body.scrollWidth,document.body.clientWidth); //获取页面最大长度 var page_height = Math.max(document.body.scrollHeight,document.body.clientHeight); //如果将水印列数设置为0，或水印列数设置过大，超过页面最大宽度，则重新计算水印列数和水印x轴间隔 if (defaultSettings.watermark_cols == 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width *defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) { defaultSettings.watermark_cols = parseInt((page_width-defaultSettings.watermark_x+defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space)); defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1)); } //如果将水印行数设置为0，或水印行数设置过大，超过页面最大长度，则重新计算水印行数和水印y轴间隔 if (defaultSettings.watermark_rows == 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) { defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space)); defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1)); } 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.appendChild(document.createTextNode(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"; //选不中 mask_div.style.left = x + 'px'; mask_div.style.top = y + 'px'; mask_div.style.overflow = "hidden"; mask_div.style.zIndex = "9999"; mask_div.style.pointerEvents = "none"; //mask_div.style.border="solid #eee 1px"; mask_div.style.opacity = defaultSettings.watermark_alpha; mask_div.style.fontSize = defaultSettings.watermark_fontsize; 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); }; }; // document.body.appendChild(oTemp); try { // console.log(document.getElementById(id), "document.getElementById(id)"); document.getElementById(id).appendChild(oTemp); } catch(error) { console.error(error, "遮罩异常"); } }; // 使用 watermarkUtils({ watermark_txt: "9527", watermark_width: 60, watermark_fontsize: "14px" }, watermarkId); 