javascript - How do I add references to HTML elements in to my JSON? -


the cytoscape.js example shown here has reference in json:

 container: document.getelementbyid('cy'),

eg.

cytoscape({    container: document.getelementbyid('cy'),    elements: [     { // node n1       //... snip     }] });

if manually create json string, , call cytoscape() on it, works fine.

however, i've returning json string servlet, , on client side, need add container value.

i've tried:

function updategraph(json) {     console.log(json);      pjson = json.parse(json);     pjson["container"] =  document.getelementbyid('graph-container');     json = json.stringify(pjson);     console.log(json);      cytoscape(json); }

but show container element as:

"container":{}

what's correct way add html element reference? 

document.getelementbyid('graph-container');

will return html element embedded within <>. javascript object notation(json) cannot hold such elements, cannot parse such elements. can hold arrays, objects of string, boolean, numbers , null.


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