czv/czv-wasm/examples/basic-demo/index.html

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HTML

<!DOCTYPE html>
<html id="html" lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="pico.min.css" />
<title>czv demo</title>
</head>
<body style="padding:1rem">
<div style="display: flex; gap: 2rem; justify-content: space-between;">
<h1>czv playground</h1>
<button class="outline secondary" style="height: fit-content; padding: 0.25rem;" onclick="const html = document.getElementById('html');
if (html.getAttribute('data-theme') === 'light')
html.setAttribute('data-theme', 'dark')
else
html.setAttribute('data-theme', 'light')">Switch
page theme</button>
</div>
<p>Import a CSV file and get statistical data from running <a href="https://github.com/rzmk/czv">czv</a> in your
browser using WASM.</p>
<input type="file" id="upload" accept=".csv" class="hidden" />
<label for="upload" style="display: none;" id="progress">Loading...</label>
<table style="width: 100%;" class="striped">
<thead>
<tr>
<th style="width: 10rem">Output type</th>
<th>Output</th>
</tr>
</thead>
<tbody>
<tr>
<td>Row count</td>
<td id="row-count"></td>
</tr>
<tr>
<td>Column count</td>
<td id="column-count"></td>
</tr>
</tbody>
</table>
<script type="module">
const input = document.getElementById("upload")
const progress = document.getElementById("progress")
import init, * as czv from "../../pkg/czv.js";
// Must run `await init()` or `initSync()` first for web use
await init();
const fileReader = new FileReader()
fileReader.onloadstart = () => {
progress.style.display = "block";
}
fileReader.onloadend = () => {
document.getElementById("column-count").innerText = czv.columnCount(fileReader.result)
document.getElementById("row-count").innerText = czv.rowCount(fileReader.result)
progress.style.display = "none";
}
input.addEventListener("change", () => {
fileReader.readAsText(input.files[0])
})
</script>
</body>
</html>