read a local json file in my extension

[jack]

hi,

how can i read a local json file in my extension?

I tried:

$.getJSON("file.json", function(json_data) {

                    // json_data

                });

however, i cannot access json_data outside the callback function. 

to make a deep copy of json_data in a global variable that can be accessed outside callback function, i tried $.extend(true,target, json_data) and JSON.parse(JSON.stringify(json_data)) but with no success.

Can you, please, tell me what's wrong?

Thanks  a lot in advance.

[Antony Sargent]

Are you sure you're getting the JSON content? E.g. something like this should work:

var xhr = new XMLHttpRequest;

xhr.open("GET", chrome.runtime.getURL("manifest.json"));

xhr.onreadystatechange = function() {

  if (this.readyState == 4) {

    console.log("request finished, now parsing");

    window.json_text = xhr.responseText;

    window.parsed_json = JSON.parse(xhr.responseText);

    console.log("parse results:");

    console.dir(window.parsed_json);

  }

};

xhr.send();

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[Wolf War]

another solution would be:

chrome.runtime.getPackageDirectoryEntry(function(root) {

root.getFile("MY_FILE.json", {}, function(fileEntry) {

fileEntry.file(function(file) {

var reader = new FileReader();

reader.onloadend = function(e) {

var myFile = JSON.parse(this.result);

/*do here whatever with your JS object(s)*/

};

reader.readAsText(file);

});

});

});