This is an example of how VisConnect's event sharing can be used to easily create a chat application.
Created
April 20, 2020 18:14
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VisConnect Chat Example
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| <!DOCTYPE html> | |
| <html lang="en-US"> | |
| <head> | |
| <script src="https://unpkg.com/peerjs@1.0.4/dist/peerjs.min.js"></script> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://michaschwab.github.io/VisConnect/visconnect-bundle.js"></script> | |
| <link href="style.css" rel="stylesheet" /> | |
| </head> | |
| <body collaboration="live" custom-events="chat-message" ignore-events="click, mousedown, mouseup, mousemove, selectstart, dragstart"> | |
| <div id="wrapper"> | |
| <h1>Chat</h1> | |
| <div id="chat"></div> | |
| <form> | |
| <input id="chat-nick" size="60" value="Guest" type="text" name="nick" /> | |
| <input id="chat-input" size="60" type="text" name="message" /> | |
| </form> | |
| <script src="js.js"></script> | |
| </div> | |
| </body> | |
| </html> |
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| document.body.addEventListener('keyup', (e) => { | |
| if (e.key === 'Enter') { | |
| const data = { | |
| sender: document.getElementById('chat-nick').value, | |
| text: document.getElementById('chat-input').value, | |
| time: Date.now() | |
| }; | |
| const event = new CustomEvent('chat-message', {detail: data}); | |
| document.body.dispatchEvent(event); | |
| } | |
| }); | |
| const messages = []; | |
| document.body.addEventListener('chat-message', (e) => { | |
| messages.push(e.detail); | |
| rerender(); | |
| }); | |
| function rerender() { | |
| const chat = d3.select('#chat'); | |
| const msgs = chat.selectAll('.msg').data(messages); | |
| msgs.enter().append('div').attr('class', 'msg').html((d) => `<b>${d.sender}</b>: ${d.text}`); | |
| } |
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| #wrapper { | |
| width: 900px; | |
| margin: auto; | |
| } | |
| #chat { | |
| height: 300px; | |
| width: 600px; | |
| overflow-y: auto; | |
| border: 1px solid #ccc; | |
| margin-bottom: 50px; | |
| padding: 5px; | |
| box-sizing: border-box; | |
| } | |
| input { | |
| padding: 7px 15px; | |
| border-radius: 5px; | |
| border: 1px solid #ccc; | |
| outline: none; | |
| box-sizing: border-box; | |
| } | |
| input:focus { | |
| border-color: #666; | |
| } | |
| #chat-nick { | |
| width: 100px; | |
| } | |
| #chat-input { | |
| width: 500px; | |
| } |
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