101 lines
3.3 KiB
HTML
101 lines
3.3 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Chat with Websockets</title>
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<link rel="stylesheet" href="./default.css">
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</head>
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<body>
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<div class="content">
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<h1 class="content-title">Chat with websockets</h1>
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<div class="content-body">
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<input autofocus label="Nick" id="nick"></input>
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<textarea hidden disabled id="wfc-output"></textarea>
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<input hidden id="wfc-input"></input>
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</div>
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</div>
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<script>
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let nelt = document.getElementById('nick');
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let ielt = document.getElementById('wfc-input');
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let oelt = document.getElementById('wfc-output');
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let ws = new WebSocket("/ws/chat");
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let nick = '';
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// when user hits any key while typing in nick
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function on_nick(evt) {
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if (evt.key === 'Enter') {
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// don't do default thing
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evt.preventDefault();
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// grab contents
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let contents = nelt.value;
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let trimmed = contents.trim();
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// if contents are nonempty
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let nonempty_contents = trimmed.length > 0;
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if (nonempty_contents) {
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nick = trimmed;
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let msg_obj = ['nick', nick];
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let msg_str = JSON.stringify(msg_obj);
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console.log('message to server:', contents.trim());
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// query backend for result
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ws.send(msg_str);
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// delete element from dom
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nelt.remove();
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oelt.hidden = false;
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ielt.hidden = false;
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ielt.autofocus = true;
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}
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}
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}
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// when user hits any key while typing in ielt
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function on_input_key(evt) {
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if (evt.key === 'Enter') {
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// don't do default thing
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evt.preventDefault();
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// grab contents
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let contents = ielt.value;
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let trimmed = contents.trim();
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// if contents are nonempty
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let nonempty_contents = trimmed.length > 0;
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if (nonempty_contents) {
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let msg_obj = ['chat', trimmed];
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let msg_str = JSON.stringify(msg_obj);
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console.log('message to server:', contents.trim());
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// query backend for result
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ws.send(msg_str);
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// clear input
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ielt.value = '';
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// add to output
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oelt.value += '> ';
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oelt.value += trimmed;
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oelt.value += '\n';
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}
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}
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}
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function main() {
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nelt.addEventListener('keydown', on_nick);
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ielt.addEventListener('keydown', on_input_key);
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ws.onmessage =
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function (msg_evt) {
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console.log('message from server:', msg_evt);
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let msg_str = msg_evt.data;
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let msg_obj = JSON.parse(msg_str);
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oelt.value += msg_obj.nick;
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oelt.value += '> ';
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oelt.value += msg_obj.msg;
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oelt.value += '\n';
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};
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}
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main();
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</script>
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</body>
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</html>
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