Importing and exporting JSON information into Cytoscape.js

After coming across this interesting question and answer, I decided to create this JSFiddle to explore further.

My objective is to find an effective way to export and import JSON data into cytoscape.js.

The approach I took involved using JSON.stringify(cy.json()) to retrieve the JSON data from elements. On the other hand, I cleared the cy component and utilized cy.add(text-input) to reintroduce the elements.

For example, you can add a node, copy its generated JSON data, refresh the browser, and then try pasting the JSON data directly into the cy component. However, despite my efforts, I couldn't get it to work. I suspect the issue lies in my usage of the cy.add function, as I keep encountering these two errors:

An element must be of type 'nodes' or 'edges'; you specified 'undefined'

Uncaught TypeError: Cannot read property 'single' of undefined

Any insights or suggestions would be greatly appreciated.

Thank you in advance.

javascriptjsoncytoscape.js

Answer №1

To utilize ele.json() or eles.jsons(), you can either build an array of element JSONs or iterate over the elements. When using cy.json(), keep in mind that it returns the entire graph init options JSON, which cannot be passed to cy.add() or similar methods.

Remember that when adding elements using cy.add(), you must pass the actual objects and not a JSON string.

For example:

cy.add( JSON.parse( jsonString ) )

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