Parsing JSON from XmlHttpRequest.responseJSON

user_118872 0
Viewed 311932

I'm trying to parse a bit.ly JSON response in javascript.

I get the JSON via XmlHttpRequest.

var req = new XMLHttpRequest;  
req.overrideMimeType("application/json");  
req.open('GET', BITLY_CREATE_API + encodeURIComponent(url)
          + BITLY_API_LOGIN, true);  
var target = this;  
req.onload  = function() {target.parseJSON(req, url)};  
req.send(null);

parseJSON: function(req, url) {  
if (req.status == 200) {  
    var jsonResponse = req.responseJSON;  
    var bitlyUrl = jsonResponse.results[url].shortUrl;  
}

I do this in a firefox addon. When I run I get the error "jsonResponse is undefined" for the line var bitlyUrl = jsonResponse.results[url].shortUrl;. Am I doing anything wrong in parsing JSON here? Or what is wrong with this code?

bit.ly firefox-addon json javascript
5 Answers

I think you have to include jQuery to use responseJSON.

Without jQuery, you could try with responseText and try like eval("("+req.responseText+")");

UPDATE:Please read the comment regarding eval, you can test with eval, but don't use it in working extension.

OR

use json_parse : it does not use eval

user_2134640
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