本文实例为大家分享了vue实现页面添加水印的具体代码，供大家参考，具体内容如下
js文件
建一个watermark.js文件
let setWatermark = (str1, str2, str3) => {
let id = '1.23452384164.123412415'
if (document.getElementById(id) !== null) {
document.body.removeChild(document.getElementById(id))
}
let can = document.createElement('canvas')
can.width = 270
can.height = 100
let cans = can.getContext('2d')
cans.rotate(-20 * Math.PI / 180)
cans.font = '17px Vedana'
cans.fillStyle = '#666666'
cans.textAlign = 'center'
cans.textBaseline = 'Middle'
cans.fillText(str1, can.width / 2, can.height)
cans.fillText(str2, can.width / 2, can.height + 20)
cans.fillText(str3, can.width / 2, can.height + 40)
let div = document.createElement('div')
div.id = id
div.style.pointerEvents = 'none'
div.style.top = '20px'
div.style.left = '0px'
div.style.opacity = '0.15'
div.style.position = 'fixed'
div.style.width = document.documentElement.clientWidth + 'px'
div.style.height = document.documentElement.clientHeight + 'px'
div.style.background = 'url(' + can.toDataURL('image/png') + ') left top repeat'
document.body.appendChild(div)
return id
}
// 添加水印
export const setWaterMark = (str1, str2, str3) => {
let id = setWatermark(str1, str2, str3)
if (document.getElementById(id) === null) {
id = setWatermark(str1, str2, str3)
}
}
// 移除水印
export const removeWatermark = () => {
let id = '1.23452384164.123412415'
if (document.getElementById(id) !== null) {
document.body.removeChild(document.getElementById(id))
}
}页面引入
html添加
:style="{ backgroundImage: `url(${orgBackground})` }"引入
import { removeWatermark, setWaterMark } from '@/libs/watermark'data添加
orgBackground: '',mounted()添加
setWaterMark(str1, str2, str3);效果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
