jquery ajax

pecifying the Data Type for AJAX Requests
Ajax Event
jquery ajax api
<br />$.ajax({<br /> url: "data.xml",<br /> //判斷是不是IE<br /> dataType: ($.browser.msie) ? "text" : "xml",<br /> success: function(data){<br /> var xml;<br /> //typeof 判斷形別<br /> if (typeof data == "string") {<br /> xml = new ActiveXObject("Microsoft.XMLDOM");<br /> xml.async = false;<br /> xml.loadXML(data);<br /> } else {<br /> xml = data;<br /> }<br /> // Returned data available in object "xml"<br /> }<br /> }); <br /><br /><br />$.ajax({<br /> type: "POST",<br /> url: "some.php",<br /> //data: {name: 'john', location= 'Boston'}<br /> data: "name=John&location=Boston",<br /> success: function(msg){<br /> alert( "Data Saved: " + msg );<br /> }<br /> });<br /><br />//responseText 直接拿回傳的string<br /> var html = $.ajax({<br /> url: "some.php",<br /> async: false<br /> }).responseText;<br /><br />//processData 要注意<br /> var xmlDocument = [create xml document];<br /> $.ajax({<br /> url: "page.php",<br /> processData: false,<br /> data: xmlDocument,<br /> success: handleResponse<br /> });<br /><br />
注意一下的參數
cache
Added in jQuery 1.2, if set to false it will force the pages that you request to not be cached by the browser.

complete
A function to be called when the request finishes (after success and error callbacks are executed). The function gets passed two arguments: The XMLHttpRequest object and a string describing the type of success of the request.

<br /> $.ajax({<br /> beforeSend: function(){<br /> // Handle the beforeSend event<br /> },<br /> complete: function(){<br /> // Handle the complete event<br /> }<br /> // ...<br /> });<br />

contentType
When sending data to the server, use this content-type. Default is "application/x-www-form-urlencoded", which is fine for most cases.

data
Data to be sent to the server. It is converted to a query string, if not already a string. It's appended to the url for GET-requests. See processData option to prevent this automatic processing. Object must be Key/Value pairs. If value is an Array, jQuery serializes multiple values with same key i.e. {foo:["bar1", "bar2"]} becomes '&foo=bar1&foo=bar2'.

processData
By default, data passed in to the data option as an object (technically, anything other than a string) will be processed and transformed into a query string, fitting to the default content-type "application/x-www-form-urlencoded". If you want to send DOMDocuments, or other non-processed data, set this option to false.

password
A password to be used in response to an HTTP access authentication request.

username
A username to be used in response to an HTTP access authentication request.