Could you tell me some questions about my code? ajax + php (CodeIgniter)

Ask the question in my code: ajax + php (CodeIgniter) I use ajax to pass the page value to the background, but it cannot be obtained. how can I write this? This is troublesome. My page code is: & lt; script & nbsp; type = "text/javascript" & g ask questions in my code ajax + php (CodeIgniter)
I used ajax to pass the page value to the background, but it was not available. could you tell me how to write this? This is troublesome.

My page code is:

$ (Function (){
$ ("Form [name = 'estime']"). submit (function (e ){
E. preventDefault ();
Var btn = $ ("form [name = 'estime']"). find ("input [type = 'submit ']"),
Price = $ (this). find (". price ");
Btn. button ('loading ');
Price.html ("");
$. Ajax ({
Type: "POST ",
Url :' Index. php? Module = testprice & view = getprice ',
Data: $ (this). serializeArray (),
Success: function (data ){
Price.html ("$" + data + "RMB" + "");
Btn. button ('reset ');
},
Error: function (){
Alert ("Service Unavailable ");
}
});
});

Script