简单的jQuery，PHP和JSONP的例子吗？ [英] Simple jQuery, PHP and JSONP example?

问题描述

我面临着同样的原产地政策的问题，并通过研究这个问题，我发现，我的特定项目的最佳方法是使用JSONP做跨域请求。

I am facing the same-origin policy problem, and by researching the subject, I found that the best way for my particular project would be to use JSONP to do cross-origin requests.

我一直在阅读这篇文章来自IBM约JSONP ，但我不100％清楚是怎么回事。

I've been reading this article from IBM about JSONP, however I am not 100% clear on what is going on.

所有我要求在这里，是一个简单的jQuery> PHP JSONP请求（或其他术语的含义;）） - 像这样（这显然是不正确，它只是让你可以得到的想法我试图实现:)）

All I am asking for here, is a simple jQuery>PHP JSONP request (or whatever the terminology may be ;) ) - something like this (obviously it is incorrect, its just so you can get an idea of what I am trying to achieve :) ):

jQuery的：

$.post('http://MySite.com/MyHandler.php',{firstname:'Jeff'},function(res){
    alert('Your name is '+res);
});

PHP：

<?php
  $fname = $_POST['firstname'];
  if($fname=='Jeff')
  {
    echo 'Jeff Hansen';
  }
?>

我将如何转换到这一个适当的JSONP请求？如果我是存储HTML在结果中返回，将这项工作吗？

How would I go about converting this into a proper JSONP request? And if I were to store HTML in the result to be returned, would that work too?

推荐答案

当你使用$ .getJSON对外部域，它会自动行动JSONP请求，例如我的<一个href="http://small$c$crs.com/2011/06/development-environment/freebies/tweet-slider-v2-2-now-a-lightweight-jquery-plugin/">tweet滑块这里

When you use $.getJSON on an external domain it automatically actions a JSONP request, for example my tweet slider here

如果你看一下源$ C ​​$ C，你可以看到，我打电话使用.getJSON Twitter的API。

If you look at the source code you can see that I am calling the Twitter API using .getJSON.

所以，你的例子是： 这是测试和工程（你可以去<一href="http://small$c$crs.com/javascriptdevenvironment.html">http://small$c$crs.com/javascriptdevenvironment.html看到它在行动）

So your example would be: THIS IS TESTED AND WORKS (You can go to http://smallcoders.com/javascriptdevenvironment.html to see it in action)

//JAVASCRIPT

$.getJSON('http://www.write-about-property.com/jsonp.php?callback=?','firstname=Jeff',function(res){
    alert('Your name is '+res.fullname);
});

//SERVER SIDE
  <?php
 $fname = $_GET['firstname'];
      if($fname=='Jeff')
      {
          //header("Content-Type: application/json");
         echo $_GET['callback'] . '(' . "{'fullname' : 'Jeff Hansen'}" . ')';

      }
?>

注意？回调=？和+ res.fullname

Note the ?callback=? and +res.fullname

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