A LiquidFillGauge with D3.js v4
use case:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="http://d3js.org/d3.v4.min.js" language="JavaScript"></script>
<script src="./liquidFillGauge.js"></script>
<style>
.liquidFillGaugeText { font-family: Helvetica; font-weight: bold; }
</style>
</head>
<body>
<svg id="fillgauge" width="400" height="250"></svg>
<script language="JavaScript">
const gauge = new LiquidFillGauge("fillgauge", 50)
gauge.render()
setTimeout(() => {
gauge.update(75.5)
}, 1000)
</script>
</body>
</html>