web流程图JS插件：dagre-d3

        在Github上找到了一个开源项目:dagre-d3.

        看名字就能猜到它是基于D3库的,D3是一个专门用于前端图形绘制的库,dagre-d3就是实现自动布局并且绘制流程图的这么一个东西：

Dagre is a JavaScript library that makes it easy to lay out directed graphs on the client-side. The dagre-d3 library acts a front-end to dagre, providing actual rendering using D3.

上一个简单的Demo:

// Create a new directed graphvar g = new dagreD3.Digraph(); // Add nodes to the graph. The first argument is the node id. The second is// metadata about the node. In this case we're going to add labels to each of// our nodes.g.addNode("kspacey",    { label: "Kevin Spacey" });g.addNode("swilliams",  { label: "Saul Williams" });g.addNode("bpitt",      { label: "Brad Pitt" });g.addNode("hford",      { label: "Harrison Ford" });g.addNode("lwilson",    { label: "Luke Wilson" });g.addNode("kbacon",     { label: "Kevin Bacon" }); // Add edges to the graph. The first argument is the edge id. Here we use null// to indicate that an arbitrary edge id can be assigned automatically. The// second argument is the source of the edge. The third argument is the target// of the edge. The last argument is the edge metadata.g.addEdge(null, "kspacey",   "swilliams", { label: "K-PAX" });g.addEdge(null, "swilliams", "kbacon",    { label: "These Vagabond Shoes" });g.addEdge(null, "bpitt",     "kbacon",    { label: "Sleepers" });g.addEdge(null, "hford",     "lwilson",   { label: "Anchorman 2" });g.addEdge(null, "lwilson",   "kbacon",    { label: "Telling Lies in America" });

它渲染出来是这样的:

       这样我们只要把数据处理成对应格式,就可以轻松的自动绘制会流程图.比较给力的是它对数据的支持良好,有多个格式可以选择,而且虽然接口不多,但是对于节点以及线条的操作都有,可以很轻松的改变节点以及线条的样式,这个大家可以看官方的demo.

       另外如果要附加交互事件,可以通过jquery实现,也很容易,我使用bootstrap的tooltip很轻松的就加上去了.感觉还是个很给力的库,而且国内这方面资料感觉不多,分享给大家.

      最后Github地址:    https://github.com/cpettitt/dagre-d3

原文地址：通过数据自动生成流程图(前端方向)