<meta charset="utf-8" />

<meta name="viewport" content="width=device-width, initial-scale=1" />

<title>ECharts Demo</title>

<script src="https://cdnjs.cloudflare.com/ajax/libs/echarts/5.2.2/echarts.min.js"

integrity="sha512-ivdGNkeO+FTZH5ZoVC4gS4ovGSiWc+6v60/hvHkccaMN2BXchfKdvEZtviy5L4xSpF8NPsfS0EVNSGf+EsUdxA=="

crossorigin="anonymous" referrerpolicy="no-referrer"></script>

<style>

#display-container {

width: 100%;

height: 100%;

}

</style>

<div id="display-container">

</div>

<script type="text/javascript">

let chart = echarts.init(document.getElementById("display-container"));

let option = {"series":[{"type":"graph","data":[{"name":"Node 1","x":300,"y":300},{"name":"Node 2","x":800,"y":300},{"name":"Node 3","x":550,"y":100},{"name":"Node 4","x":550,"y":500}],"symbolSize":50,"links":[{"lineStyle":{"curveness":0.2},"source":"Node 1","target":"Node 2"},{"lineStyle":{"curveness":0.2},"source":"Node 2","target":"Node 1"},{"source":"Node 1","target":"Node 3"},{"source":"Node 2","target":"Node 3"},{"source":"Node 2","target":"Node 4"},{"source":"Node 1","target":"Node 4"}],"edgeSymbol":["circle","arrow"],"label":{"show":true},"lineStyle":{"width":2,"opacity":0.9,"curveness":0}}]}

chart.setOption(option);

</script>