//由于你使用的是AJAX，相信你不能依赖这里的提交
//清空动作，你可以包含charset utf-8，因为我认为jQuery POST方法也使用它
HTML
<input name="user" id="nick" value="admin" type="hidden">
<p class="messagelabel"><label class="messagelabel">Message</label>
<textarea id="message" name="message" rows="2" cols="40"></textarea>
<input disabled="disabled" id="send" value="Sending..." type="submit">
JAVACRIPT
//reset the form to it's original state
$.fn.reset = function () {
$(this).each (function() {
this.reset();
});
//any logic that you want to add besides the regular javascript reset
/*$("select#select2").multiselect('refresh');
$("select").multiselect('destroy');
redo();
*/
}
//start of jquery based function
jQuery(function($)
{
//useful variable definitions
var page_action = 'index.php/admin/messages/insertShoutBox';
var the_form_click=$("#form input[type='submit']");
//useful in case that we want to make reference to it and update
var just_the_form=$('#form');
//bind to the events instead of the submit action
the_form_click.on('click keypress', function(event){
//原代码，去掉了提交事件处理程序..
//$("#form").submit(function(){
if(checkForm()){
//var nick = inputUser.attr("value");
//var message = inputMessage.attr("value");
//seems more adequate for your form, not tested
var nick = $('#form input[type="text"]:first').attr('value');
var message = $('#form input[type="textarea"]').attr('value');
//we deactivate submit button while sending
//$("#send").attr({ disabled:true, value:"Sending..." });
//This is more convenient here, we remove the attribute disabled for the submit button and we change it's value
the_form_click.removeAttr('disabled')
//.val("Sending...");
//not sure why this is here so lonely, when it's the same element.. instead trigger it to avoid any issues later
.val("Sending...").trigger('blur');
//$("#send").blur();
//send the post to shoutbox.php
$.ajax({
type: "POST",
//see you were calling it at the form, on submit, but it's here where you update the url
//url: "index.php/admin/dashboard/insertShoutBox",
url: page_action,
//data: $('#form').serialize(),
//Serialize the form data
data: just_the_form.serialize(),
// complete: function(data){
//on complete we should just instead use console log, but I;m using alert to test
complete: function(data){
alert('Hurray on Complete triggered with AJAX here');
},
success: function(data){
messageList.html(data.responseText);
updateShoutbox();
var timeset='750';
setTimeout(" just_the_form.reset(); ",timeset);
//reset the form once again, the send button will return to disable false, and value will be submit
//$('#message').val('').empty();
//maybe you want to reset the form instead????
//reactivate the send button
//$("#send").attr({ disabled:false, value:"SUBMIT !" });
}
});
}
else alert("Please fill all fields!");
//we prevent the refresh of the page after submitting the form
//return false;
//we prevented it by removing the action at the form and adding return false there instead
event.preventDefault();
}); //end of function
}); //end jQuery function
</script>