如何使用Java脚本访问不同的域数据 [英] How to access different domain data using Java script

问题描述

这里是问题。假设有 DOMAIN A 将成为包含 PHP Script 文件的服务器。来自域A的数据将由 DOMAIN B上的客户端访问。

我知道无法使用JavaScript直接访问。所以我做的是，在域A中，我创建了一个JavaScript文件作为前端的PHP脚本，AJAX的PHP和返回数据。但不幸的是它没有工作

我遇到了一个例子，PHP在客户端是一个中间人。但我不想保持任何服务器端PHP代码作为客户端的中间人。我只想将Javascript发送到客户端域。

如何从其他服务器获取JavaScript数据？

DOMAIN A

PHP - data.php

 <？php echo服务器返回数据; > 
  

JS - example.js p>

Ajax到PHP

 函数getData b {
 //假设ajax对data.php完成，数据被检索，现在返回数据
 return ajaxed_data; 
} 
  

域B

JS

客户端包括来自域A 的 example.js 文件HTML

 < script type =text / javascriptsrc =http://www.DomainA.com/example。 js>< / script> 
< script type =text / javascript> 
 alert（getData（））; 
< / script> 
  

我希望我已经明白了！这可以建立吗？它的东西像谷歌的朋友连接，我的意思是，只是提供JavaScript客户端和它。

解决方案

p>您可以使用 JSONP 。 jQuery具有良好支持。

DOMAIN A - data.php：

 <？php 
 $ data ='{data ：服务器返回数据}'; 
 echo $ _GET ['jsoncallback']。 '（'。$ data。'）;'; 
？> 
  

DOMAIN B - 客户：

  $ .getJSON（'http://domainA.com/data.php?jsoncallback=？'，function（json）{
 alert（json.data）; 
 }）; 
  

Here is the issue. Suppose there is a DOMAIN A which is going to be the server containing a PHP Script file. The data from Domain A is to be accessed by a Client at DOMAIN B.

I know it cannot be accessed directly using JavaScript. So what I did is, in Domain A I created a a JavaScript file as front-end for the PHP Script which AJAXes the PHP and returns the data. But unfortunately it din't work

I came across an example having PHP as a Middle Man in the client side. But I donot want to keep any server side PHP code as a middle man in the client side. I just want to give out the Javascript to the client domain.

How to get data with JavaScript from another server?

DOMAIN A

PHP - data.php

<?php echo "Server returns data"; ?>

JS - example.js

Does the Ajax to the PHP

function getData()
{
   //assume ajax is done for data.php and data is retrieved, now return the data
   return ajaxed_data;
}

Domain B

JS

Client includes the example.js file from Domain A in his HTML

<script type="text/javascript" src="http://www.DomainA.com/example.js"></script>
<script type="text/javascript">
     alert(getData());
</script>

I hope I have made myself understandable ! Can this be established ? Its something like Google friend connect, what I mean is, just provide JavaScript to the client and thats it. Every thing carried out in server side

Thankx for providing this forum

解决方案

You could use JSONP. jQuery has a good support for it.

DOMAIN A - data.php:

<?php
    $data = '{ "data" : "Server returns data" }';
    echo $_GET['jsoncallback'] . '(' . $data . ');';
?>

DOMAIN B - client:

$.getJSON('http://domainA.com/data.php?jsoncallback=?', function(json) {
    alert(json.data);
});

这篇关于如何使用Java脚本访问不同的域数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！