Programming language: JavaScript
License: MIT License

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Simple flow library.

Drawflow allows you to create data flows easily and quickly.

Installing only a javascript library and with four lines of code.



Table of contents


  • Drag Nodes
  • Multiple Inputs / Outputs
  • Multiple connections
  • Delete Nodes and Connections
  • Add/Delete inputs/outputs
  • Reroute connections
  • Data sync on Nodes
  • Zoom in / out
  • Clear data module
  • Support modules
  • Editor mode edit, fixed or view
  • Import / Export data
  • Events
  • Mobile support
  • Vanilla javascript (No dependencies)
  • NPM
  • Vue Support component nodes && Nuxt


Download or clone repository and copy the dist folder, CDN option Or npm.


git clone https://github.com/jerosoler/Drawflow.git


# Last
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/jerosoler/Drawflow/dist/drawflow.min.css">
<script src="https://cdn.jsdelivr.net/gh/jerosoler/Drawflow/dist/drawflow.min.js"></script>
# or version view releases https://github.com/jerosoler/Drawflow/releases
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/drawflow.min.css" />
<script src="https://unpkg.com/[email protected]/dist/drawflow.min.js"></script>


npm i drawflow


External package. More info #119

npm install -D @types/drawflow


import Drawflow from 'drawflow'
import styleDrawflow from 'drawflow/dist/drawflow.min.css'


var Drawflow = require('drawflow')
var styleDrawflow = require('drawflow/dist/drawflow.min.css')

Create the parent element of drawflow.

<div id="drawflow"></div>


Start drawflow.

var id = document.getElementById("drawflow");
const editor = new Drawflow(id);
Parameter Type Description
id Object Name of module
render Object It's for Vue.
parent Object It's for Vue. The parent Instance

For vue 2 example.

import Vue from 'vue'

// Pass render Vue
this.editor = new Drawflow(id, Vue, this);

For vue 3 example.

import { h, getCurrentInstance, render } from 'vue'
const Vue = { version: 3, h, render };

this.editor = new Drawflow(id, Vue);
// Pass render Vue 3 Instance
const internalInstance = getCurrentInstance()
editor.value = new Drawflow(id, Vue, internalInstance.appContext.app._context);


Add to nuxt.config.js file

build: {
    transpile: ['drawflow'],

Mouse and Keys

  • del key to remove element.
  • Right click to show remove options (Mobile long press).
  • Left click press to move editor or node selected.
  • Ctrl + Mouse Wheel Zoom in/out (Mobile pinch).


You can change the editor to fixed type to block. Only editor can be moved. You can put it before start.

editor.editor_mode = 'edit'; // Default
editor.editor_mode = 'fixed'; // Only scroll

You can also adjust the zoom values.

editor.zoom_max = 1.6;
editor.zoom_min = 0.5;
editor.zoom_value = 0.1;

Editor options

Parameter Type Default Description
reroute Boolean false Active reroute
reroute_fix_curvature Boolean false Fix adding points
curvature Number 0.5 Curvature
reroute_curvature_start_end Number 0.5 Curvature reroute first point and las point
reroute_curvature Number 0.5 Curvature reroute
reroute_width Number 6 Width of reroute
line_path Number 5 Width of line
force_first_input Boolean false Force the first input to drop the connection on top of the node
editor_mode Text edit edit for edit, fixed for nodes fixed but their input fields available, view for view only
zoom Number 1 Default zoom
zoom_max Number 1.6 Default zoom max
zoom_min Number 0.5 Default zoom min
zoom_value Number 0.1 Default zoom value update
zoom_last_value Number 1 Default zoom last value
draggable_inputs Boolean true Drag nodes on click inputs
useuuid Boolean false Use UUID as node ID instead of integer index. Only affect newly created nodes, do not affect imported nodes


Active reroute connections. Use before start or import.

editor.reroute = true;

Create point with double click on line connection. Double click on point for remove.


Separate your flows in different editors.

// Default Module is Home

RemovedModule if it is in the same module redirects to the Home module


Adding a node is simple.

editor.addNode(name, inputs, outputs, posx, posy, class, data, html);
Parameter Type Description
name text Name of module
inputs number Number of de inputs
outputs number Number of de outputs
pos_x number Position on start node left
pos_y number Position on start node top
class text Added classname to de node. Multiple classnames separated by space
data json Data passed to node
html text HTML drawn on node or name of register node.
typenode boolean & text Default false, true for Object HTML, vue for vue

You can use the attribute df-* in inputs, textarea or select to synchronize with the node data and contenteditable.

Atrributs multiples parents support df-*-*...

Node example

var html = `
<div><input type="text" df-name></div>
var data = { "name": '' };

editor.addNode('github', 0, 1, 150, 300, 'github', data, html);

Register Node

it's possible register nodes for reuse.

var html = document.createElement("div");
html.innerHTML =  "Hello Drawflow!!";
editor.registerNode('test', html);
// Use
editor.addNode('github', 0, 1, 150, 300, 'github', data, 'test', true);

// For vue
import component from '~/components/testcomponent.vue'
editor.registerNode('name', component, props, options);
// Use for vue
editor.addNode('github', 0, 1, 150, 300, 'github', data, 'name', 'vue');
Parameter Type Description
name text Name of module registered.
html text HTML to drawn or vue component.
props json Only for vue. Props of component. Not Required
options json Only for vue. Options of component. Not Required


Other available functions.

Mehtod Description
zoom_in() Increment zoom +0.1
zoom_out() Decrement zoom -0.1
getNodeFromId(id) Get Info of node. Ex: id: 5
getNodesFromName(name) Return Array of nodes id. Ex: name: telegram
removeNodeId(id) Remove node. Ex id: node-x
updateNodeDataFromId Update data element. Ex: 5, { name: 'Drawflow' }
addNodeInput(id) Add input to node. Ex id: 5
addNodeOutput(id) Add output to node. Ex id: 5
removeNodeInput(id, input_class) Remove input to node. Ex id: 5, input_2
removeNodeOutput(id, output_class) Remove output to node. Ex id: 5, output_2
addConnection(id_output, id_input, output_class, input_class) Add connection. Ex: 15,16,'output_1','input_1'
removeSingleConnection(id_output, id_input, output_class, input_class) Remove connection. Ex: 15,16,'output_1','input_1'
updateConnectionNodes(id) Update connections position from Node Ex id: node-x
removeConnectionNodeId(id) Remove node connections. Ex id: node-x
getModuleFromNodeId(id) Get name of module where is the id. Ex id: 5
clearModuleSelected() Clear data of module selected
clear() Clear all data of all modules and modules remove.

Methods example



You can detect events that are happening.

List of available events:

Event Return Description
nodeCreated id id of Node
nodeRemoved id id of Node
nodeDataChanged id id of Node df-* attributes changed.
nodeSelected id id of Node
nodeUnselected true Unselect node
nodeMoved id id of Node
connectionStart { output_id, output_class } id of nodes and output selected
connectionCancel true Connection Cancel
connectionCreated { output_id, input_id, output_class, input_class } id's of nodes and output/input selected
connectionRemoved { output_id, input_id, output_class, input_class } id's of nodes and output/input selected
connectionSelected { output_id, input_id, output_class, input_class } id's of nodes and output/input selected
connectionUnselected true Unselect connection
addReroute id id of Node output
removeReroute id id of Node output
rerouteMoved id id of Node output
moduleCreated name name of Module
moduleChanged name name of Module
moduleRemoved name name of Module
click event Click event
clickEnd event Once the click changes have been made
contextmenu event Click second button mouse event
mouseMove { x, y } Position
mouseUp event MouseUp Event
keydown event Keydown event
zoom zoom_level Level of zoom
translate { x, y } Position translate editor
import import Finish import
export data Data export

Events example

editor.on('nodeCreated', function(id) {
  console.log("Node created " + id);

Export / Import

You can export and import your data.

var exportdata = editor.export();

Export example

Example of exported data:

    "drawflow": {
        "Home": {
            "data": {}
        "Other": {
            "data": {
                "16": {
                    "id": 16,
                    "name": "facebook",
                    "data": {},
                    "class": "facebook",
                    "html": "\n        
 Facebook Message
\n        ",
                    "inputs": {},
                    "outputs": {
                        "output_1": {
                            "connections": [
                                    "node": "17",
                                    "output": "input_1"
                    "pos_x": 226,
                    "pos_y": 138
                "17": {
                    "id": 17,
                    "name": "log",
                    "data": {},
                    "class": "log",
                    "html": "\n            
 Save log file
\n            ",
                    "inputs": {
                        "input_1": {
                            "connections": [
                                    "node": "16",
                                    "input": "output_1"
                    "outputs": {},
                    "pos_x": 690,
                    "pos_y": 129


View the complete example in folder docs.
There is also an [example](docs/drawflow-element.html) how to use Drawflow in a custom element. (based on LitElement).


MIT License

*Note that all licence references and agreements mentioned in the Drawflow README section above are relevant to that project's source code only.