⚠ Solution proposed here depends on two libraries marked as unsupported by their authors.
To get Graphviz DOT files rendered in Javascript, combine the graphlib-dot and dagre-d3 libraries.
The graphlibDot.read() method takes a graph or digraph definition in DOT syntax and produces a graph object. The dagreD3.render() method can then output this graph object to SVG.
You can then use additional D3 methods to add functionality to the graph, retrieving additional node and edge attributes from the graphlib graph object as needed.
A trivial self-contained example is:
window.onload = function() {
// Parse the DOT syntax into a graphlib object.
var g = graphlibDot.read(
'digraph {\n' +
' a -> b;\n' +
' }'
)
// Render the graphlib object using d3.
var render = new dagreD3.render();
render(d3.select("svg g"), g);
// Optional - resize the SVG element based on the contents.
var svg = document.querySelector('#graphContainer');
var bbox = svg.getBBox();
svg.style.width = bbox.width + 40.0 + "px";
svg.style.height = bbox.height + 40.0 + "px";
}svg {
overflow: hidden;
}
.node rect {
stroke: #333;
stroke-width: 1.5px;
fill: #fff;
}
.edgeLabel rect {
fill: #fff;
}
.edgePath {
stroke: #333;
stroke-width: 1.5px;
fill: none;
}<script src="https://d3js.org/d3.v5.min.js"></script>
<script src="https://dagrejs.github.io/project/graphlib-dot/v0.6.4/graphlib-dot.min.js"></script>
<script src="https://dagrejs.github.io/project/dagre-d3/v0.5.0/dagre-d3.min.js"></script>
<html>
<body>
<script type="text/javascript">
</script>
<svg id="graphContainer">
<g/>
</svg>
</body>
</html>