I've got the following…
chrome.extension.sendRequest({
req: "getDocument",
docu: pagedoc,
name: 'name'
}, function(response){
var efjs = response.reply;
});
which calls the following..
case "getBrowserForDocumentAttribute":
alert("ZOMG HERE");
sendResponse({
reply: getBrowserForDocumentAttribute(request.docu,request.name)
});
break;
However, my code never reaches "ZOMG HERE" but rather throws the following error while running chrome.extension.sendRequest
Uncaught TypeError: Converting circular structure to JSON
chromeHidden.JSON.stringify
chrome.Port.postMessage
chrome.initExtension.chrome.extension.sendRequest
suggestQuery
Does anyone have any idea what is causing this?
Best Answer
It means that the object you pass in the request (I guess it is
pagedoc
) has a circular reference, something like:JSON.stringify
cannot convert structures like this.N.B.: This would be the case with DOM nodes, which have circular references, even if they are not attached to the DOM tree. Each node has an
ownerDocument
which refers todocument
in most cases.document
has a reference to the DOM tree at least throughdocument.body
anddocument.body.ownerDocument
refers back todocument
again, which is only one of multiple circular references in the DOM tree.