getjson | 易学教程

jQuery.getJSON doesn't trigger callback

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I have a html code: <button>asd</button> <script type = "text/javascript"> $('button').click( function() { $.getJSON('/schedule/test/', function(json) { alert('json: ' + json + ' ...'); }); } ); </script> and corresponding view: def test(request): if request.method == 'GET': json = simplejson.dumps('hello world!') return HttpResponse(json, mimetype = 'application/json') The view is executed (tested using print ), json variable is initialised but no alert appears. What did I do wrong? I've already seen some docs on this ( http://docs.jquery.com/Ajax/jQuery.getJSON#urldatacallback for example)

How to return value from $.getJSON

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问题 I'm having a problem with method using $.getJSON. It's very simple and it looks like that: function lastID(query) { $.getJSON(url+query ,function(json){ var type_id = json.data; }); return type_id // doesn't work } Could you please tell me how to return type_id to some other value for instance like this: var returnedID = lastID(query); // this schould me equal to returned type_id from lastID method. Many thanks for your reply 回答1: You will need to do something like the following, since you

jQuery getJSON - Return value to the caller function

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问题 String.prototype.getLanguage = function() { $.getJSON('http://ajax.googleapis.com/ajax/services/language/detect?v=1.0&q=' + this + '&callback=?', function(json) { return json.responseData.language; }); }; How can I return the value to the caller value? Thanks. EDIT: I've tried this: String.prototype.getLanguage = function() { var returnValue = null; $.getJSON('http://ajax.googleapis.com/ajax/services/language/detect?v=1.0&q=' + this + '&callback=?', function(json) { returnValue = json

JQuery Parsing JSON array

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I have a JSON output like the following: ["City1","City2","City3"] I want to get each of the city names, how can i do this? $.getJSON("url_with_json_here",function(json){ }); EDIT: $.getJSON('url_here', function(data){ $.each(data, function (index, value) { $('#results').append('<p>'+value+'</p>'); console.log(value); }); }); The above doesn't seem to be working, no values are outputted. kapa getJSON() will also parse the JSON for you after fetching, so from then on, you are working with a simple Javascript array ( [] marks an array in JSON). The documentation also has examples on how to

$.getJSON not working

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I search related topic in jQuery. But I didn't saw any method to solve my problem. $(document).ready(function(){ $("#inputForm").submit(function(event){ $(":text").each(function() { var inputText = $(this).val(); var userList = []; var weblink = 'http://test.com'; // problem is from here. $.getJSON(weblink, function(data){ alert(weblink); // this statement doesn't show up $.each(data, function(entryIndex, entry){ userList.push(entry['from_user']); }); }); alert(userList); }); }); }); There are four problems here: Why the first alert('weblink') doesn't show up. Why this code can't get the json

$.getJSON not working in Internet Explorer

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I am using following code to grab data from JSON. $(document).ready(function() { $.getJSON("http://www.example.com/data.php?id=113&out=json", function(data) { $.each(data.issue.page, function(i,item) { imagesJSON[i] = item["@attributes"]; }); alert(imagesJSON.length); }); }); It works in Mozilla, Chrome and other browser but not in IE. (Not in any Version). Spoike $.getJSON has a tendency to cache results in IE . Use $.ajax instead. The related call should be something like this in your case: // Not really sure if you've forgot to var var imagesJSON = []; $.ajax({ url: "www.example.com/data

JQuery's getJSON() not setting Accept header correctly?

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问题 It looks like people have had issues with Accept headers in the past, but I'm not sure my issue is related. Using jQuery 1.4.2, I'm having trouble getting JSON with getJSON() . I can watch the request / response in Firebug and it looks like the source of the problem is that the resource in question returns different results depending on the Accept header. Even though the docs say it should be set, in Firebug it shows up as " / " -- obviously, I want "application/json". Is this a known bug? Am

Max recommended size of external JSON object in JavaScript

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问题 I have a tremendous amount of data to sort and query, and I can't rely on an internet connection. Ideally, I'd like to store my entire data-set as a JSON object (currently around 17MB, but could get much larger) and use something like jLinq or SQLike to query it, as opposed to having to output numerous smaller files. I'm interested in finding what the largest recommended filesize is for an external getJSON call using JavaScript (jQuery, specifically). 1MB, 20MB, 100MB? Information on the

Assign data from jQuery getJSON to array

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问题 How do you assign the data fetched via getJSON() to an array, for later use? The getJSON url below retrieves properly formatted JSON with 10 main elements, each having subelements of id, username, haiku (and other). If you're running it, try saving the JSON elements to a local file, so you won't get the same domain error (i.e., JSON will not load if you're fetching from a different domain). What happens is that the alert will fetch a value within the getJSON callback, but outside, the value

XMLHttpRequest cannot load is not allowed by Access-Control-Allow-Origin

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I'm trying to get access to education.com API data. However, I keep receiving an error the error states: XMLHttpRequest cannot load http://api.education.com/service/service.php?f=schoolSearch&key=mykey&sn=sf&v=4&city=Atlanta&state=ga&Resf=json . Origin is not allowed by Access-Control-Allow-Origin. My code is the following: $(function(){ $.getJSON('http://api.education.com/service/service.php?f=schoolSearch&key=mykey&sn=sf&v=4&city=Atlanta&state=ga&Resf=json', function(data) { console.log(data); }); }); Can someone help me please? SALMAN An article on Cross Domain AJAX issue a while back here: