首页
壁纸
直播
留言
关于
友链
统计
Search
1
tampermonkey油猴和谷歌访问助手的安装---破解谷歌访问助手
13,303 阅读
2
安装postcss-px-to-viewport,将px单位转换为视口单位的 (vw, vh, vmin, vmax) 的 PostCSS 插件(有更新postcss弃用,附带vite.config.ts文件)
3,022 阅读
3
编译asar文件与electron反编译
2,878 阅读
4
websocket封装带心跳和重连机制(vue3+ts+vite)
2,564 阅读
5
js一些小功能(持续更新)
2,412 阅读
大前端
JavaScript
CSS
HTML
框架
Vue
electron
element-ui/plus
小程序
微信小程序
uni-app
服务端
Node.js
nginx
PHP
MySQL
工具
杂记
登录
Search
标签搜索
Vue3
Vue
Axios
微信小程序
Javascript
Vuex
js
请求
request
前端
tampermonkey
Google
助手
脚本
小程序云开发
Bootstrap
壁纸
鼠标事件
跨域
css
大祥子i
累计撰写
55
篇文章
累计收到
118
条评论
首页
栏目
大前端
JavaScript
CSS
HTML
框架
Vue
electron
element-ui/plus
小程序
微信小程序
uni-app
服务端
Node.js
nginx
PHP
MySQL
工具
杂记
页面
壁纸
直播
留言
关于
友链
统计
搜索到
1
篇与
Presentation'API
的结果
2022-07-08
PresentationAPI使用教程(Vue3&html)
W3C在2020年12月份出台了Presentation API规范,这个api接口允许用户自由控制投放在其他屏幕上,并和投放窗口通信,查看W3C规范。演示地址:投屏演示,详细demo(Vue3/HTML)见文章末尾 (特别注意:需要注意必须为https环境) 1、创建一个PresentationRequest对象,该对象将包含我们要在辅助附加显示器上显示的地址。const presentationRequest = new PresentationRequest('receiver.html'); 2、做控制及监听事件/* * @Author: lzx * @Date: 2022-07-08 15:34:16 * @LastEditors: lzx * @LastEditTime: 2022-07-08 17:14:31 * @Description: Fuck Bug * @FilePath: \test\js\index.js */ // 创建个投屏对象 const presentationRequest = new PresentationRequest(['https://blog.fxnws.com']); // 投屏网址 // const presentationRequest = new PresentationRequest(['test.html']);//投屏页面 // Make this presentation the default one when using the "Cast" browser menu. navigator.presentation.defaultRequest = presentationRequest; let presentationConnection; //监视连接是否可用 presentationRequest.addEventListener('connectionavailable', function (event) { presentationConnection = event.connection; presentationConnection.addEventListener('close', function () { console.log('> Connection closed.'); }); presentationConnection.addEventListener('terminate', function () { console.log('> Connection terminated.'); }); presentationConnection.addEventListener('message', function (event) { console.log('> ' + event.data); }); }); //监视可用的显示器 presentationRequest.getAvailability() .then(availability => { console.log('Available presentation displays: ' + availability.value); availability.addEventListener('change', function () { console.log('> Available presentation displays: ' + availability.value); }); }) .catch(error => { console.log('Presentation availability not supported, ' + error.name + ': ' + error.message); }); // 开启投屏 function startProjectionScreen () { presentationRequest.start() .then(connection => { console.log('Connected to ' + connection.url + ', id: ' + connection.id); }) .catch(error => { console.log(error); }); } //发送消息 function sendMsg () { const message = '发送消息测试'; const lang = document.body.lang || 'en-US'; console.log('Sending "' + message + '"...'); presentationConnection.send(JSON.stringify({ message, lang })); } //关闭连接,关闭连接后无法再控制弹出窗口 function closeLink () { console.log('Closing connection...'); presentationConnection.close(); } //关闭连接后,换可以重新再次连接,这里需要指定id // presentationRequest.reconnect(presentationId); //关闭弹窗,结束连接调用 function endLink () { console.log('Terminating connection...'); presentationConnection.terminate(); } 3、连接端页面消息的展示(搬运的官方)/* * @Author: lzx * @Date: 2022-07-08 15:34:16 * @LastEditors: lzx * @LastEditTime: 2022-07-08 15:34:30 * @Description: Fuck Bug * @FilePath: \test\js\test.js */ let connectionIdx = 0; let messageIdx = 0; //如果有连接建立,则调用该函数 function addConnection (connection) { connection.connectionId = ++connectionIdx; addMessage('New connection #' + connectionIdx); connection.addEventListener('message', function (event) { messageIdx++; const data = JSON.parse(event.data); const logString = 'Message ' + messageIdx + ' from connection #' + connection.connectionId + ': ' + data.message; addMessage(logString, data.lang); maybeSetFruit(data.message); connection.send('Received message ' + messageIdx); }); connection.addEventListener('close', function (event) { addMessage('Connection #' + connection.connectionId + ' closed, reason = ' + event.reason + ', message = ' + event.message); }); }; const fruitEmoji = { 'grapes': '\u{1F347}', 'watermelon': '\u{1F349}', 'melon': '\u{1F348}', 'tangerine': '\u{1F34A}', 'lemon': '\u{1F34B}', 'banana': '\u{1F34C}', 'pineapple': '\u{1F34D}', 'green apple': '\u{1F35F}', 'apple': '\u{1F34E}', 'pear': '\u{1F350}', 'peach': '\u{1F351}', 'cherries': '\u{1F352}', 'strawberry': '\u{1F353}' }; function addMessage (content, language) { const listItem = document.createElement("li"); if (language) { listItem.lang = language; } listItem.textContent = content; document.querySelector("#message-list").appendChild(listItem); }; function maybeSetFruit (message) { const fruit = message.toLowerCase(); if (fruit in fruitEmoji) { document.querySelector('#main').textContent = fruitEmoji[fruit]; } }; //文档载入后,监听连接 document.addEventListener('DOMContentLoaded', function () { if (navigator.presentation.receiver) { navigator.presentation.receiver.connectionList.then(list => { list.connections.map(connection => addConnection(connection)); list.addEventListener('connectionavailable', function (event) { addConnection(event.connection); }); }); } }); 4、接收端页面构<!-- * @Author: lzx * @Date: 2022-07-08 15:34:05 * @LastEditors: lzx * @LastEditTime: 2022-07-08 15:35:13 * @Description: Fuck Bug * @FilePath: \test\test.html --> <!doctype html> <html> <head> <meta charset="utf-8"> <title>Demo Receiver</title> <style type="text/css"> html, body { height: 100%; margin: 0; font-family: sans-serif; background: radial-gradient(ellipse at center, #333333 0%, #000000 100%); color: #fff; } #main { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; font-size: 54px; } </style> <script type="text/javascript" src="引入3的代码块"></script> </head> <body> <div id="main">Hello World!</div> <ul id="message-list"> </ul> </body> </html> 5、vue3页面<template> <div class="container"> <button @click="startProjectionScreen">开启投屏</button> <button @click="sendMsg">发送消息</button> <!-- <button @click="closeLink">关闭连接</button> --> <button @click="endLink">结束调用</button> </div> </template> <script lang="ts"> // @ts-nocheck 不在当前文件中执行类型检查 import { toRefs, reactive, onMounted, watchEffect, onUnmounted } from 'vue' export default { props: {}, components: {}, setup () { const presentationRequest = new PresentationRequest(['https://blog.fxnws.com']); // 投屏网址 // const presentationRequest = new PresentationRequest(['test.html']); // 投屏本地页面 navigator.presentation.defaultRequest = presentationRequest; let presentationConnection; // 传参 const state = reactive({ }) const startProjectionScreen = () => { presentationRequest.start() .then(connection => { console.log('Connected to ' + connection.url + ', id: ' + connection.id); }) .catch(error => { console.log(error); }); } //发送消息 const sendMsg = () => { const message = '发送消息测试'; const lang = document.body.lang || 'en-US'; console.log('Sending "' + message + '"...'); presentationConnection.send(JSON.stringify({ message, lang })); } //关闭连接,关闭连接后无法再控制弹出窗口 const closeLink = () => { console.log('Closing connection...'); presentationConnection.close(); } //关闭连接后,换可以重新再次连接,这里需要指定id // presentationRequest.reconnect(presentationId); //关闭弹窗,结束连接调用 const endLink = () => { console.log('Terminating connection...'); presentationConnection.terminate(); } // 挂载 onMounted(() => { //监视连接是否可用 presentationRequest.addEventListener('connectionavailable', function (event) { presentationConnection = event.connection; presentationConnection.addEventListener('close', function () { console.log('> Connection closed.'); }); presentationConnection.addEventListener('terminate', function () { console.log('> Connection terminated.'); }); presentationConnection.addEventListener('message', function (event) { console.log('> ' + event.data); }); }); //监视可用的显示器 presentationRequest.getAvailability() .then(availability => { console.log('Available presentation displays: ' + availability.value); availability.addEventListener('change', function () { console.log('> Available presentation displays: ' + availability.value); }); }) .catch(error => { console.log('Presentation availability not supported, ' + error.name + ': ' + error.message); }); }) // 监听 watchEffect(() => { console.log('监听') }) // 页面卸载 onUnmounted(() => { console.log('页面卸载') }) return { ...toRefs(state), endLink, closeLink, sendMsg, startProjectionScreen } } } </script> <style scoped> </style> 6、详细demo附件下载隐藏内容,请前往内页查看详情
2022年07月08日
726 阅读
33 评论
0 点赞