网站页面添加js水印页面添加js水印js水印添加到页面的方法
- 茶余饭后
- 22天前
- 103热度
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/**
* 自定义文字水印
*/
const watermark = function () {
return {
build: function(arg) {
// 获取页面宽度
let maxWidth = Math.max(document.body.scrollWidth, window.screen.width) - 20;
// 获取页面高度
let maxHeight = Math.max(document.body.scrollHeight, document.body.clientHeight) + 100;
if (maxHeight === 0){
console.info("该页面无敏感内容~");
return;
}
const setting = {
text: "广州XX公司授权", // 默认水印内容
beginX: 50, // 默认起始x坐标
endX: 0, // 默认结束x坐标
beginY: 50, // 默认起始y坐标
endY: 0, // 默认结束y坐标
intervalX: 150, // 默认横向间隔宽度
intervalY: 100, // 默认纵向间隔高度
opacity: 0.3, // 字体透明度
angle: 20, // 字体倾斜度
fontsize: '15px', // 字体大小
fontFamily: '微软雅黑', // 字体
width: 100, // 水印(每个)宽度
height: 80, // 水印(每个)高度
innerDate: false, // 是否附带日期
};
// 默认变量与自定义变量结合
if (arguments.length ===1 && typeof arguments[0] === "object"){
const src = arguments[0] || {};
for (const key in src){
if (!src.hasOwnProperty(key) || !src[key]){
continue;
}
for (const def in setting){
if (key === def){
setting[def] = src[key];
}
}
}
}
// 计算列个数
const cols = parseInt((setting.intervalX + maxWidth - setting.beginX - setting.endX) / (setting.width + setting.intervalX) + "");
// 计算行个数
const rows = parseInt((setting.intervalY + maxHeight - setting.beginY - setting.endY) / (setting.height + setting.intervalY) + "");
// 水印内容附加日期
if (setting.innerDate){
const date = new Date();
setting.text = [setting.text, "<br>", date.getFullYear(), "年", date.getMonth() + 1, "月", date.getDate(), "日"].join("");
}
const fragment = document.createDocumentFragment();
let x, y;
for (let i=0; i<rows; i++){
y = setting.beginY + (setting.intervalY + setting.height) * i;
for (let j=0; j<cols; j++){
x = setting.beginX + (setting.width + setting.intervalX) * j;
const element = document.createElement('div');
element.id = 'watermark' + i + j;
// 设置倾斜角
element.style.MozTransform = "rotate(-" + setting.angle + "deg)";
element.style.msTransform = "rotate(-" + setting.angle + "deg)";
element.style.OTransform = "rotate(-" + setting.angle + "deg)";
element.style.transform = "rotate(-" + setting.angle + "deg)";
element.style.position = "absolute";
element.style.left = x + 'px';
element.style.top = y + 'px';
element.style.overflow = "hidden";
element.style.zIndex = "9999";
element.style.pointerEvents = 'none';
element.style.opacity = setting.opacity;
element.style.fontSize = setting.fontsize;
element.style.fontFamily = setting.fontFamily;
element.style.color = '#aaa';
element.style.textAlign = "center";
element.style.width = setting.width + 'px';
element.style.height = setting.height + 'px';
element.style.display = "block";
element.innerHTML = setting.text;
fragment.appendChild(element);
}
}
document.body.appendChild(fragment);
}
}
}();