functionwatermark(settings) {//默认设置

var defaultSettings ={

watermark_txt:"text",

watermark_x:20, //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: 20, //水印行数

watermark_cols: 20, //水印列数

watermark_x_space: 100, //水印x轴间隔

watermark_y_space: 50, //水印y轴间隔

watermark_color: '#aaa', //水印字体颜色

watermark_alpha: 0.4, //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: 210, //水印宽度

watermark_height: 80, //水印长度

watermark_angle: 20 //水印倾斜度数

};if (arguments.length === 1 && typeof arguments[0] === "object") {var src = arguments[0] ||{};for (key insrc) {if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) continue;else if (src[key]) defaultSettings[key] =src[key];

}

}var oTemp =document.createDocumentFragment();//获取页面最大宽度

var page_width =Math.max(document.body.scrollWidth, document.body.clientWidth);var cutWidth = page_width * 0.0150;var page_width = page_width -cutWidth;//获取页面最大高度

var page_height = Math.max(document.body.scrollHeight, document.body.clientHeight) + 450;

page_height= Math.max(page_height, window.innerHeight - 30);//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));

}varx;vary;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));//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= "9999";//让水印不遮挡页面的点击事件

mask_div.style.pointerEvents = 'none';

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);

};

};

document.body.appendChild(oTemp);

}functiongetNow() {var d = newDate();var year =d.getFullYear();var month = change(d.getMonth() + 1);var day =change(d.getDate());var hour =change(d.getHours());var minute =change(d.getMinutes());var second =change(d.getSeconds());functionchange(t) {if (t < 10) {return "0" +t;

}else{returnt;

}

}var time = year + '年' + month + '月' + day + '日 ' + hour + '时' + minute + '分' + second + '秒';returntime;

}