mirror of
https://github.com/aljazceru/turso.git
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95 lines
2.4 KiB
HTML
95 lines
2.4 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>Guestbook</title>
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<style>
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body {
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font-family: sans-serif;
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max-width: 600px;
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margin: 2rem auto;
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}
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#comments {
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border: 1px solid #ddd;
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border-radius: 6px;
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padding: 0;
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list-style: none;
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}
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#comments li {
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padding: 8px;
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border-top: 1px solid #eee;
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}
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#comments li:first-child {
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border-top: none;
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}
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.time {
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font-size: 0.8em;
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color: gray;
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}
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</style>
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</head>
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<body>
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<h1>Guestbook</h1>
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<form id="form">
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<input id="comment" placeholder="Write a comment..." style="width:70%; padding:6px;" />
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<button type="submit">Add</button>
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</form>
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<ul id="comments"></ul>
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<script type="module">
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import { connect } from "@tursodatabase/database-wasm/vite";
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let db = await connect("local.db", {
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timeout: 1000 // busy timeout for handling high-concurrency write cases
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});
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// execute multiple SQL statements with exec(...)
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await db.exec(`
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CREATE TABLE IF NOT EXISTS guestbook ( comment TEXT, created_at DEFAULT (unixepoch()) );
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CREATE INDEX IF NOT EXISTS guestbook_idx ON guestbook (created_at);
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`);
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await refresh();
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async function addComment() {
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// use prepared statements and bind args to placeholders later
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const insert = db.prepare(`INSERT INTO guestbook(comment) VALUES (?)`);
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const input = document.getElementById("comment");
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const text = input.value.trim();
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input.value = "";
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// use run(...) method if query only need to be executed till completion
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await insert.run([text]);
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await refresh();
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}
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document.getElementById("form").addEventListener("submit", (e) => {
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e.preventDefault();
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addComment();
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});
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async function refresh() {
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const select = db.prepare(`SELECT comment, created_at FROM guestbook ORDER BY created_at DESC LIMIT ?`);
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// use all(...) or get(...) methods to get all or one row from the query
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const rows = await select.all([5]);
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const ul = document.getElementById("comments");
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ul.innerHTML = "";
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rows.forEach((row) => {
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const li = document.createElement("li");
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li.innerHTML = `
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<div>${row.comment}</div>
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<div class="time">${new Date(row.created_at * 1000).toLocaleString()}</div>
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`;
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ul.appendChild(li);
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});
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}
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</script>
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</body>
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</html> |