According to documentation ( api.jquery.com/submit ) submit() without parameters will submit your form, but if you include arguments it will bind the submit event to the form, but it won't submit it So, the code posted by @Chris Fulstow would be the right way of submitting the form, but as ajax is not synchronous, function will continue without waiting for the answer and then, the alert will not be shown You can make it synchronous, but you must use $. Ajax instead of $. Post because $.
Post doesn't include an async option. Anyway, I'm providing a solution for your specific problem, but I'm guess there should be a better way for doing it $(function() { $('#select_dropdown'). Change(function() { $('#form_to_submit').submit(); }); $('#form_to_submit').
Submit(function(event) { $. Ajax( url: "list. Php", data: { name: "John", time: "2pm" }, success: function(){ alert("Data Loaded: " + data); }, async:false, ); }); }).
According to documentation ( api.jquery.com/submit/ ), submit() without parameters will submit your form, but if you include arguments it will bind the submit event to the form, but it won't submit it. So, the code posted by @Chris Fulstow would be the right way of submitting the form, but as ajax is not synchronous, function will continue without waiting for the answer and then, the alert will not be shown. You can make it synchronous, but you must use $.
Ajax instead of $. Post, because $. Post doesn't include an async option.
Anyway, I'm providing a solution for your specific problem, but I'm guess there should be a better way for doing it. $(function() { $('#select_dropdown'). Change(function() { $('#form_to_submit').submit(); }); $('#form_to_submit').
Submit(function(event) { $. Ajax( url: "list. Php", data: { name: "John", time: "2pm" }, success: function(){ alert("Data Loaded: " + data); }, async:false, ); }); }).
When you call with a callback argument submit( handler(eventObject) ) it will only attach an event handler. To trigger a form submit, call submit() with no arguments: $(function() { $('#select_dropdown'). Change(function() { $('#form_to_submit').submit(); }); $('#form_to_submit').
Submit(function(event) { $. Post( "list. Php", { name: "John", time: "2pm" }, function(data) { alert("Data Loaded: " + data); } ); }); }).
1 I think this will not work either, as ajax is not syncronous, the for will be submitted without waiting for the answer. – morgar May 21 at 4:24 Yeah, that's true :) At least the events will trigger in the right sequence... – Chris Fulstow May 21 at 4:30 But how will I create an ajax call after the dropdown onchange? – markcruz May 21 at 5:19.
The . Submit call in your first example is binding a function to the submit event on the form. From the fine manual: .
Submit( handler(eventObject) ) handler(eventObject) A function to execute each time the event is triggered. You need to bind your submit handler: $('#form_to_submit'). Submit(function(event){ /*...*/ }) somewhere else and call submit as in your second example.
So the problem here is that in the first case, you are binding an event handler to the element, and in the second you are triggering it. Let's look at the first case: $('#form_to_submit'). Submit(function(evt){ ... }); You're essentially doing something like document.
GetElementById('form_to_submit'). AddEventListener( 'submit', function(evt){...}, false ); The second case is you instructing the form to submit, which is why it works. If you wanted the handler to work with your custom code you would need both of them.
First bind your event handler, then, onchange instruct the form to submit. $('#form_to_submit'). Submit(function(evt){ ... }); $('#select_dropdown').
Change(function(){ $('#form_to_submit').submit(); }); Keep in mind though, that as other people have already said, if your action is set to go to another location, you may not see the results of the binded event handler so instead of explicitly stating a url for your action, you will have to use something to prevent the form from going anywhere like action="javascript:void(0)" or the like. To make your code a bit cleaner, you could pull the ajax out of an unnamed function and put it in a named one and call it on change so it looks like this. Var fetchList = function(){ $.
Ajax(...); }; $('#form_to_submit'). Submit(fetchList); $('#select_dropdown'). Change(fetchList); I haven't run this code, please excuse any silly syntax mistakes I've made.
But this should get you some of the way there. Good luck! :).
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