TypeError: Cannot create property 'vx' on string "Bob" in React

[jaydenlin]

I encountered this issue, does anyone has idea ? I ran all the d3 stuffs under componentDidMount.

* React@15.6.1

• d3@4.9.1

React Component

componentDidMount() {

       let dataset = {
            "nodes": [
                {
                    "id": "Alice"
                }, {
                    "id": "Bob"
                }, {
                    "id": "Carol"
                }
            ],
            "links": [
                {
                    "source": "Alice",
                    "target": "Bob"
                }, {
                    "source": "Bob",
                    "target": "Carol"
                }
            ]
        };
        let currentNode = ReactDOM.findDOMNode(this);
        let svg = d3
                .select(currentNode)
                .append("svg")
                .classed(s.svg, true),
            width = +svg.attr("width"),
            height = +svg.attr("height");

        var simulation = d3
            .forceSimulation()
            .force("link", d3.forceLink().distance(60).id(id => {}))
            .force("charge", d3.forceManyBody())
            .force("center", d3.forceCenter(width / 2, height / 2));

        let link = svg
            .append("g")
            .attr("class", "links")
            .selectAll("line")
            .data(dataset.links)
            .enter()
            .append("line")
            .attr("stroke-width", function (d) {
                return 3;
            });

        let node = svg
            .append("g")
            .selectAll("circle")
            .data(dataset.nodes)
            .enter()
            .append("circle")
            .attr("r", 5)
            .attr("fill", function (d) {
                return "#000";
            });
        simulation
            .nodes(dataset.nodes)
            .on("tick", () => {
                link
                    .attr("x1", function (d) {
                        return d.source.x;
                    })
                    .attr("y1", function (d) {
                        return d.source.y;
                    })
                    .attr("x2", function (d) {
                        return d.target.x;
                    })
                    .attr("y2", function (d) {
                        return d.target.y;
                    });

                node.attr("cx", function (d) {
                    return d.x;
                })
                    .attr("cy", function (d) {
                        return d.y;
                    });
            });

        simulation
            .force("link")
            .links(dataset.links);

    }

[curran]

The problem is that your code is not setting .id() properly. This is what you have: .id(id => {}).

In general, issues here are reserved for problems with the actual D3 library. For help with getting your code to work, please post to StackOverflow or the D3 Google Group.

[mbostock]

Please use Stack Overflow tag d3.js to ask for help. Although I make an effort to assist everyone that asks, I am not always available to provide help promptly or directly. Stack Overflow provides a better collaborative forum for self-help: tens of thousands of D3-related questions have already been asked there, and some answered questions may be relevant to you.

When asking for help, please include a link to a live example that demonstrates the issue, preferably on bl.ocks.org. It is often impossible to debug from code snippets alone. Isolate the issue and reduce your code as much as possible before asking for help. The less code you post, the easier it is for someone to debug, and the more likely you are to get a helpful response.

If you have a question about D3’s behavior and want to discuss it with other users, also consider the d3-js Google Group or joining the d3-js Slack.

Thank you! 🤗

[Bwing4]

Use Integer rather than string as id . The source and target should also use integer

[Jimflip]

So what was the actual solution here?