JQuery :: Using Ajax Function To Fetch JSON Into Variable
Oct 9, 2011
I'm trying to fetch JSON contents via ajax() from a file using this code:
// grab pages via AJAX request
sm.pages = (function() {
var json = null;
$.ajax({
async: false,
global: false,
url: 'pages.json',
dataType: 'json',
success: function(data){
json = data;
console.log(data);
}});
return json;
})();
One problem though. The success function doesn't seem to be firing at all even though I can see the request was successfully in Firebug.
I did the following coding, i m loading all json data and then filtering itsuccessfully, I instead want my ajax request should be for target record fetch only.
How might I go about getting the parsed JSON object in the complete function? The json param shown below seems to just receive the http status text message.
My 2nd question would be how should I knwo if the first place what params I can receive to a callback function like this?
What I'm trying to do is fetching Selectable option from my "subcat.php" by get method. It works in Firefox 5.0 and Google Chrome but it doesn't work in IE 7. As far as I know onreadystatechange=function() seems to be not working in IE 7.
I am attempting to use the return value from a nested ajax function as the value for a variable in its parent. However, despite being able to successfully assign the variable within the nested function, it reverts back to its original value after the child function has terminated. Below is the code:
I have been trying to figure this out for a few days now and have finally come to the point where I think I got it but may just need a little push to get what I want.
Heres the situation:
I have this function that uses ajax to access a database and returns the results in the responseText. That part is working fine, I have confirmed that the responseText contains the information that I need
**************code***************************************** //new ajax already created and assigned to the variable xmlhttp// var response_recieved = "some data"; function get_answer(Table_Name, Field_Name, Data_Type) {
[Code]....
As evidence by my posting, this is not working correctly. The variable response_recieved is coming up undefined outside of the callback function assigned to the onreadystatechangeproperty.
Based on the information that I have gathered online from various forums, I believe this issue has to deal with a problem with closure in the callback function assigned to onreadystatechange property. I don't think it has any. Based on the fact that there is no anonymous function in that function. But my problem is that the call back function is anonymous itself... I think???
get the variable response_recieved to survive outside of this function.
Theres nothgin wrong with my ajax, it works and is sending other variables but whe i want to send "pood" from function farmers(pood, happy) i twill not work. now when i call the function it goes like this code...
now it will not send PISSLET, what do i do? its making me angry this is the querystring the other variables are sending to my ajaz page and i echo them out, but thie pood variable will not work . i even tried redefining it code...
why I cannot access json data by using a variable as a node name. I'm trying to grab a random quote from a .json file and display it in a div. When I access a node in the object by node name I can access the node data. However, when I try to use a variable in place of the node name (because I want to grab a random node) I get an object undefined error.
I have variables coming in from JSON files via AJAX calls. Each file will have 3 variables for different background colours. Depending on which button is clicked the background will change colour to the value specified in the JSON file.
How can I get the json that this url generates?[URL]... It returns a json object as a file to download, I've tried getting the data as jsonp, but it needs a callback in the feed, but I can't generate it cause the server which generates the code is external.
[Code]...
Couldnt make it work using the get method. And using other data type just would make the incoming data as null (even including ?callback=? in the url).
And for more specific view the following pic is the JSON tab in firebug windows when I select G3 in Master ddl:I change my success method of script with this new one for test:
function SuccessHandler2(data) { $('select#Slaveddl').empty(); $.each(data, function (i, slaveValue) {
[code]....
So I think there is a problem with manipulate of return value (data).Also I try this one and just the first alert appear, apparently the (data.d) is null or unknown object:
function SuccessHandler4(data) { var selection = $('select#Slaveddl'); $(selection).children().remove();
Ok, so I've built a member search using ajax to change the results each time a filter is changed. It works great, except one minor issue that I'm struggling with...I just can't specify dynamically in the parent file that linkclass$id opens linkclasscontent$id as I don't know of any way to pass that $id variable back over to the parent.
I have troubles with a simple jQuery.ajax-request which looks like this: jQuery.ajax({ type: "GET", url: "[URL]", //url: "[URL]", data: "", success: function(data, status) { $('body').html(data); }, dataType: "json" });
I test this with two different url's: [URL] [URL] The first url works and I get json-data in the data-object. The second url gives a "parseerror", and I can't figure out why. As far as I can see (and using a json-validator) the second url returns valid json, so what's wrong?
I got a problem with a json response from an ajax request.
I have the following code :
Code:
And the called page (ajax_sous_famille.php) is giving me this result :
Code:
The info in the resulting string is correct, but here you can see the [ ] at the start and end of the line. It seems not to be a correct Json string and then it crashes my script !
I have another request like this which gives me the good format of resulting data (without the [ ]) and which works perfectly when i decode the Json string to display it.
The difference between the 2 requests is that the one which works returns only 1 array of values like
Code:
And the second one which doesn't work returns something like
Code:
Actually, all the records are coming from a database and in the case it doesn't work, i wanna get several results from this database.
I have a web service that accepts application/json but returns HTML to place in a DIV. I am not having any luck configuring the .ajax call so that it both POSTs in a format accepted by the web service and does not attempt to validate the HTML response as JSON.
[Code]...
It would seem that I cannot have anything other than 'json' in the dataType, even though from the docs it appears that this only affects the interpretation of the response, changing it's value to 'html' causes the web service to reject the call. I've also tried a converter but perhaps I'm not using it properly. Is it possible to use jquery to post JSON and get back HTML? What configurations am I missing?
The code works fine. When I call the post, I get the categoryid as a result.Now, I should modify the code above, so I can do:post the ajax call sending the category id. this is done get subcategories for this category, and build the array * json_encode the array and echo * get results back in jQuery ajax call, decode and build the < select > field *The array should be built with each element having a sub-array with id and name, right?
Problem is, I can't access dataValues at the server side once I assign this same URL to the iframe.Is there any other way to POST JSON value through form submission without ajax? or any other way out, I am trying to download file that is based on some parameters and isn't a direct download link.
I am using a framework, which returns invalid JSON Strings like:
/* { "myobject" : "test"} */
The error is the comments before and after the json string. This has been invented for security reasons. As the www says returning JSON directly is somehow discouraged because it can be exploited. I am not a security expert at all but would like to go conform with this recommendation. However, now I get this string above with header type "application/json" Can I somehow hook into jQuery and tell it to remove /* */ from the json string by default before parsing the json and breaking it into objects?
I am slowly working through learning/writing a JS project.here is the core issue.:
var pt =<? echo json_encode($prt);?> alert(pt) // for diagnostic purposes
json is flattening the PHP array to be used in the script.However, the alert shows me that I only get {[ ,which is just before the first set of double quotes.JS quits at the double quotes, leaving me with an undefined array.How do I fix this?
