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lazy_db.html
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lazy_db.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="shortcut icon" type="image/x-icon" href="../favicon.ico">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/water.css">
<title>Lazy DB - Ring</title>
</head>
<body>
<h1><img src="../favicon.ico"> Lazy DB</h1>
<h2>Pet</h2>
<button value="3">Previous</button>
<button value="1">Next</button>
<p></p>
<script type="module">
import ring from "../index.js"
const DB = [
'1.Dog',
'2.Cat',
'3.Horse',
'4.Bird'
]
ring({
init: {},
register: (update, dispatch) => ({
init: () => {
document.body.querySelectorAll('button').forEach(btn => {
btn.addEventListener('click', ev => {
dispatch('load', ev.target.value)
})
})
dispatch('load')
},
load: delta => {
var i
update(({index}) => {
i = delta != null ? index + parseInt(delta) : 0
return {
index: i,
text: 'Loading...'
}
})
setTimeout(() => update(({index, text}) => ({
index: i == index ? i : index,
text: i == index ? DB[i % DB.length] : text
})), 1000)
}
}),
view: ({text}) => {
document.body.querySelector('p').textContent = text
}
})
</script>
</body>
</html>