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问题:
i have this jQuery-AJAX code below and a form:
<script type="text/javascript"> $(document).ready(function () { $('form').submit(function () { form_data = $(this).serializeArray(); $.ajax({ url: "/frontend_dev.php/coche1/update/id/1", type: "POST", data: form_data }); }); return false; }); </script>
As you can see I'm using serializeArray() but when i use serialize() it also works the same..
Why in both cases works the same? What of them should i use?
Im using symfony as php framework. I can offer you more info if you need it.
回答1:
If an object/array gets passed (which .serializeArray() returns), it's serialized via $.param().
If a string get passed (which .serialize() returns) it doesn't do anything further.
...so they have the same effect when passed as the data property. You can find the relevant check here:
// convert data if not already a string if ( s.data && s.processData && typeof s.data !== "string" ) { s.data = jQuery.param( s.data, s.traditional ); }
Which one should you use? It really doesn't matter here, .serialize() makes the same $.param() call, so they do the exact same amount of work. I personally use .serialize() because it's simply less to type.
回答2:
In this case, they're the same. But there is a big difference if you do not specify the type - serialize will do a GET and serializeArray will do a POST!
回答3:
I've noticed that in CodeIgniter, the .serialize method can produce data that gets polluted by CodeIgniter's CSRF protection (CodeIgniter somehow adds semi-colons to the array keys), whereas the forms I've submitted with .serializeArray did not have this problem.
Also, if you're using complex POST names, e.g. name="some[a][data][structure]" where the places in the $_POST array changes and are not arbitrary, then using .serialize will probably be much easier because you can convert it back into a PHP data structure much more easily.
