getting this error “ $.toJSON is not a function ”

Question

I\'m trying to use jQuery and Ajax and I use this method. but I get the error $.toJSON is not a function in my firebug . where is the problem? I use jquery 1.3.2 . thanks

Answer 1

That's correct.

There is no $.toJSON() function: http://api.jquery.com/jQuery.toJSON. Perhaps you want to use JSON.stringify() instead.

Answer 2

I'm learning jquery and I have the same problem. My mistake - in this line of code which interrupted me:

var params = $.toJSON(request);

After replacing it with this code:

var params = JSON.stringify(request);

I did not get any error.

But please help me know how you want your method readen :

url: "viewMessages.aspx/readen"

Answer 3

You are already included jquery, there is no reason to use any other library, just use $.parseJSON(a_json_string) :

var error_json_string = '{"error":{"message":"message blablabla","type":"","code":""}}';
var error_json_obj = $.parseJSON(error_json_string);

alert(error_json_obj.error.message);

Source : http://api.jquery.com/jquery.parsejson/

Answer 4

You need to include the jquery-json library from http://code.google.com/p/jquery-json/ on your page.

Answer 5

Just use

data: params,

OR

var params = {key:ID},