目录
- 1.创建水印Js文件
- 2.引入操作
- 2.1 在App.vue中引用或其他页面
- 2.2 在router配置文件中引用
【需求】系统内页面显示水印,登录页面没有水印(退出登录时,登录页面不会显示水印)
1.创建水印Js文件
/* * @Author: 刘小二 * @Date: 2021-07-15 14:43:27 * @LastEditTime: 2021-07-15 15:00:27 * @LastEditors: Please set LastEditors * @Description: 添加水印 * @FilePath: /huashijc_MeetingSys/src/common/warterMark.js */ 'use strict' let watermark = {} let setWatermark = (str) => { let id = '1.23452384164.123412415' if (document.getElementById(id) !== null) { document.body.removeChild(document.getElementById(id)) } let can = document.createElement('canvas') can.width = 250 can.height = 120 let cans = can.getContext('2d') cans.rotate(-15 * Math.PI / 150) cans.font = '20px Vedana' cans.fillStyle = 'rgba(200, 200, 200, 0.20)' cans.textAlign = 'left' cans.textBaseline = 'Middle' cans.fillText(str, can.width / 8, can.height / 2) let div = document.createElement('div') div.id = id div.style.pointerEvents = 'none' div.style.top = '35px' div.style.left = '0px' div.style.position = 'fixed' div.style.zIndex = '100000' 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 } // 该方法只允许调用一次 watermark.set = (str) => { let id = setWatermark(str) setInterval(() => { if (document.getElementById(id) === null) { id = setWatermark(str) } }, 500) window.onresize = () => { setWatermark(str) } } const outWatermark = (id) => { if (document.getElementById(id) !== null) { const div = document.getElementById(id) div.style.display = 'none' } } watermark.out = () => { const str = '1.23452384164.123412415' outWatermark(str) } export default watermark
2.引入操作
2.1 在App.vue中引用或其他页面
// 1.在App.vue文件中,导入该文件 import Watemark from '@/common/watermark'; computed: { userName() { const name = this.$store.state.user.name return (name && name.length > 0) ? name : '未获取到用户名' } }, mounted() { Watermark.set(this.userName) } // 2.在其他页面引用 import Watemark from '@/common/watermark'; created() { Watermark.set('admin') }
2.2 在router配置文件中引用
const outWatermark = (id) => { if (document.getElementById(id) !== null) { const div = document.getElementById(id) div.style.display = 'none' } } router.afterEach((to) => { if(to.path == '/'){ Watermark.out() // 清除水印 }else{ Watermark.set('未获取到用户名') // 设置水印title } });
到此这篇关于Vue之全局水印的实现示例的文章就介绍到这了,更多相关Vue 全局水印内容请搜索NICE源码以前的文章或继续浏览下面的相关文章希望大家以后多多支持NICE源码!