AJAX jQuery的PHP返回值

问题描述：

我是新来的AJAX和那种很困惑什么是PHP传回的jQuery。所以，你有一个AJAX功能是这样的：

I am new to AJAX and am kind of confused by what PHP passes back to the jQuery. So you have an AJAX function like this:

 $.ajax({ url: '/my/site',
     data: {action: 'test'},
     type: 'post',
     success: function(output) {
                  alert(output);
              }
 });

（我把这个从阿贾克斯另外一个计算器页。）

(I took this from ajax another StackOverflow page.)

但在各种其他资源，他们将有成功的部分是这样的：

But on various other resources they will have the success section look like this:

 success: function(data) {functionfoocommandshere}

我只是困惑，是什么决定了这个变量的命名？如果PHP最终都数组：

I am just confused as to what dictates the naming of this variable? If the PHP ultimately echoes an array:

  echo $myVar;

我怎样才能得到这个从AJAX？

How can I get this from the AJAX?

答

这是Ajax的请求获取整个网站。所以，你不会得到任何变量的数据，但在数据参数整个网站。你做了所有回波将在这个参数。如果你想获取一个数组，你应该把它转换成JSON之前。

An Ajax-Requests fetches a whole site. So you'll not get any data in variables, but the whole site in the data-parameter. All echos you made together will be in this parameter. If you want to retrieve an array, you should transform it to json before.

echo json_encode($myArray);

然后就可以用这种方法通过Ajax收到

Then you can receive it via Ajax in this way

$.ajax({ url: '/my/site',
 data: {action: 'test'},
 dataType: 'json',
 type: 'post',
 success: function(output) {
              alert(output);
          }
 });

AJAX jQuery的PHP返回值

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