Home > Developer > Ajax

Example of JSON data for cross-origin javascript calls

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

If we use the original javascript cross-origin to call JSON data, we use createElement and dynamic to add a remote data interface to src. Now we can also use jquery ajax getjson for an instance.

Original js writing

The Code is as follows: Copy code

<Script type = "text/javascript">
Function urljson (o ){
// O = eval ('+ o + ')');
For (var I in o ){
Alert (I + ":" + o); // cyclically Outputs a: 1, B: 2, etc.
}
}
Var jsonp = document. createElement ("script ");
Jsonp. type = "text/javascript ";
Jsonp. src = "http://www.a.com/1/a.txt ";
Document. getElementsByTagName ("head") [0]. appendChild (jsonp); // JSON data for cross-origin calls
// Urljson ("{msg: 'This is json data'}"); // calls the urljson function like this for local data.

</Script>

Remote End

The Code is as follows: Copy code


Urljson ({msg: 'This is json data '})

The local name of urljson must be the same as that of the remote device, and can be dynamically generated.

Or the following (

The JavaScript link must be under the function.
)

The Code is as follows: Copy code

<Meta content = "text/html; charset = UTF-8" http-equiv = "Content-Type"/>
<Script type = "text/javascript">
Function jsonpCallback (result ){
Alert (result. );
Alert (result. B );
Alert (result. c );
For (var I in result ){
Alert (I + ":" + result); // cyclically Outputs a: 1, B: 2, etc.
}
}
</Script>

<Script type = "text/javascript" src = "http://www.a.com/1/a.txt"> </script>


Jquery. getJSON cross-origin call data


Method definition: jQuery. getJSON (url, data, callback)
Get json data through get request
· Url is used to provide the address page of json data
· Data (Optional) is a key-value pair that is sent to the server.
· Callback (Optional) callback function, the processing function after the json data request is successful

The Code is as follows: Copy code
Function (data, textStatus ){
// Data is a json object
// TextStatus will be "success"
This; // the options for this ajax request
}

 


(1) An object

The Code is as follows: Copy code

$. GetJSON (
"Webdata/Json_1.ashx ",
Function (data ){
$ ("# Divmessage"). text (data. CustomerName );
}
);
 


Request json data from the Json_1.ashx address. After receiving the data, process the data in the function. The data here is a record, corresponding to a customer instance, where the data exists in k/V format. It exists as an array of [object, object.
{"Unid": 1, "CustomerName": "", "Memo": "", "Other": ""}

Therefore, data. Property is used for access. The following uses a k/v loop to print the song river record:

The Code is as follows: Copy code


$. GetJSON (
"Webdata/Json_1.ashx ",
Function (data ){
Var tt = "";
$. Each (data, function (k, v ){
Tt + = k + ":" + v + "<br/> ";
})
$ ("# Divmessage" 2.16.html (tt );
});

 
Result:
Unid: 1
CustomerName: Song Jiang
Memo: Tian kuixing
Other: Hei sanlang
(2) object Array

Example

The Code is as follows: Copy code


<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> test document </title>
<Script type = "text/javascript" src = "/javascript/jquery-1.4.2.min.js"> </script>
</Head>

<Body>
<Script language = "javascript" type = "text/javascript">
Function getjs ()
{
$. GetJSON ("aaa. php? Module = yes & rid = "+ Math. random (), {ids: [111,222,333,444,555]. join (", ")}, function (data ){
For (var I = 0; I <data. length; I ++ ){
Alert (data [I]. id );
}
});
}
</Script>
<Input type = "button" value = "test" onClick = "javascript: getjs ();"/>
</Body>
</Html>

 

<? Php
$ Ids = $ _ GET ["ids"];
$ Ids = explode (',', $ ids );
// $ Arr = array ("name" => "name", "age" => 20, 'A' => $ ids );
$ Arr = array ();
$ Arr [] = array ('id' => $ ids [0], 'price _ right' => '0. 00', 'Time _ now '=> '000000', 'U _ name_now' => 'abc', 'state' => '1 ', 'iddisabled '=> '0 ');
$ Arr [] = array ('id' => $ ids [1], 'price _ right' => '0. 00', 'Time _ now '=> '000000', 'U _ name_now' => 'abc', 'state' => '1 ', 'iddisabled '=> '0 ');
$ Arr [] = array ('id' => $ ids [2], 'price _ right' => '0. 00', 'Time _ now '=> '000000', 'U _ name_now' => 'abc', 'state' => '1 ', 'iddisabled '=> '0 ');
$ Arr [] = array ('id' => $ ids [3], 'price _ right' => '0. 00', 'Time _ now '=> '000000', 'U _ name_now' => 'abc', 'state' => '1 ', 'iddisabled '=> '0 ');
$ Arr [] = array ('id' => $ ids [4], 'price _ right' => '0. 00', 'Time _ now '=> '000000', 'U _ name_now' => 'abc', 'state' => '1 ', 'iddisabled '=> '0 ');
$ Jarr = json_encode ($ arr );
Echo $ jarr;
?>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
javascript json array example json array javascript example javascript json parse example example of json string example of json array for json array javascript multipart form data json example
Related Article
JQuery AJAX Timeout Timeout problem detailed _jquery
The difference between traditional web development patterns a...
JQuery ajax File Download _ajax
Ajax various implementation methods compare _ajax
Ajax Getting Started Guide (ii)
SPRINGMVC passing a parameter list object through Ajax or pas...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More