url: Requirements of type String parameter (the default address of this page) address of the request.
type: type String parameter requirements, request method (POST or get) defaults to get. Note that other methods http request, and put e.g.
delete can be used, but only part of the browser supports.
timeout: Number requirements for the type of the parameter, setting request time (in milliseconds). This setting is provided to cover the global $ .ajaxSetup () method
Home.
async: Boolean type parameter requirements, default set to true, all requests are asynchronous requests.
If you need to send a synchronization request, set this option to false. Note that the synchronization request will lock the browser, the user must wait for other operations
To be completed before the request can be executed.
cache: requirements for the Boolean type parameter defaults to true (as when dataType Script, the default is false).
Set to false will not load request information from the browser cache.
data: Object requirements or parameters of type String, the data sent to the server. If you have not a string, the string will be automatically converted to grid
formula. get request will be appended to the url. Prevent this automatic conversion, you can view processData options. Object must be a key / value format
Type, for example, {foo1: "bar1", foo2: "bar2"} is converted to & foo1 = bar1 & foo2 = bar2. If the array, JQuery will automatically be different
Values correspond to the same name. For example {foo: [ "bar1", "bar2"]} is converted to & foo = bar1 & foo = bar2.
dataType: String requirements for the type of parameters, the expected data type returned by the server. If not specified, JQuery will automatically according to the http package mime
Returns information responseXML or responseText, and passed as a callback function parameters.
Available types are as follows:
xml: returns an XML document, available JQuery process.
html: Returns the HTML plain text information; script tag contained performs when inserted DOM.
script: return plain text JavaScript code. It does not automatically cached results. Unless the cache parameter sets. Note that the remote request
When (not under the same domain), all post requests are converted to get the request.
json: returns JSON data.
jsonp: JSONP format. When using the form SONP call functions, such as myurl? Callback = ?, JQuery will automatically replace a post
"?" Is the correct name of the function to execute the callback function.
text: Returns the plain text string.
beforeSend: Function type parameter is required, the function may be modified before sending a request XMLHttpRequest object, such as adding custom
HTTP header. Returns false if the beforeSend can cancel the ajax request. The XMLHttpRequest object is the only reference
number.
function(XMLHttpRequest){
this; // passed when calling ajax request options for this parameter
}
complete: Function requirements for the type of parameters, request a callback function to call when completed (requests are called when the success or failure).
Parameters: XMLHttpRequest object and a type description string successful request.
function(XMLHttpRequest, textStatus){
this; // passed when calling ajax request options for this parameter
}
success: Function requirements for the type of parameters, the callback function to call when the request is successful, there are two parameters.
(1) returned by the server, and performs data processing in accordance with the dataType parameter.
String (2) described state.
function(data, textStatus){
// data may be xmlDoc, jsonObj, html, text, etc.
this; // passed when calling ajax request options for this parameter
error: Function type parameter is required, the function is called when the request fails. This function takes three parameters, i.e., XMLHttpRequest object, wrong
False information, error object captured (optional).
ajax event functions as follows:
function(XMLHttpRequest, textStatus, errorThrown){
// Under normal circumstances textStatus and errorThrown only one of which contains information
this; // passed when calling ajax request options for this parameter
}
contentType: String Type parameter is required, when the transmission information to the server, the content default encoding type
Is "application / x-www-form-urlencoded". The default value is suitable for most applications.
dataFilter: Function type parameter requirements, Ajax returned to the original data preprocessing functions.
Provide data and type two parameters. data is the raw data returned by Ajax, type is provided when calling jQuery.ajax
dataType parameter. The value returned by jQuery further processing.
function(data, type){
// returns the processed data
return data;
}
global: Boolean requirements for the type of argument, the default is true. It indicates whether to trigger a global ajax event. Set to false will not trigger the global
ajax event, ajaxStart or ajaxStop ajax be used to control a variety of events.
ifModified: Requirements for the Boolean type parameter, the default is false. To obtain new data only when the server data changes.
Server data change judgment based on the Last-Modified header information. The default value is false, ignoring the header information.
jsonp: requirements parameter of type String, rewrite in the name of a callback function jsonp request.
This value is used to replace the "callback =?" This URL GET or POST request parameter in the "callback" section, e.g.
{Jsonp: 'onJsonPLoad'} will cause "onJsonPLoad =?" To the server.
username: String type parameter requirements, in response to the user name for HTTP access authentication request.
password: String type parameter requirements, in response to a password authentication HTTP access request.
processData: Requirements for the Boolean type parameter, the default is true. By default, data transmission will be converted to an object (from a technical point
String is not speaking) to match the default content type "application / x-www-form-urlencoded". If you want to send DOM
Tree information or other information do not want to convert, set to false.
scriptCharset: String type parameter requirements, only when the request is dataType "jsonp" or "script", and the type is GET
It will be used to modify the mandatory character set (charset). Not normally used in both local and remote content encoding.
Case Code:
$(function(){
$('#send').click(function(){
$.ajax({
type: "GET",
url: "test.json",
data: {username:$("#username").val(), content:$("#content").val()},
dataType: "json",
success: function(data){
$ ( '# ResText') empty ();. // emptied of all content inside resText
was html = '';
$.each(data, function(commentIndex, comment){
html += '<div class="comment"><h6>' + comment['username']
+ ':</h6><p class="para"' + comment['content']
+ '</p></div>';
});
$('#resText').html(html);
}
});
});
});
// POST request
function the doPost (URL, Data, EUID, Key, O, Success) {
$ .ajax ({
type: "the POST",
URL: URL,
Data: the JSON.stringify ({
S: security.encrypt (the JSON. the stringify (Data), Key),
O: O,
U: EUID,
K: security.genVldCode (EUID, Key)
}),
contentType: "file application / JSON; charset = UTF-. 8", the text // request
crossDomain: true, // whether cross-domain
success: success // callback request success
});
}