Callback Request的意思|示意

Make sure that when you set up your request, you set the callback function to updatePage ; to do this, set the onreadystatechange property of your request object to updatePage .

确保在建立请求时，将回调函数设置为updatepage；要实现这种设置，可以将请求对象的onreadystatechange属性设置为updatepage 。

This callback function is invoked several times during the life cycle of the Ajax request whose current state can be obtained from the readyState property.

此回调函数在 Ajax 请求的整个生命周期进行了多次调用，而请求的当前状态可从 readyState 属性获得。

Your callback function will run several times — each time the ready state of the request changes — and you'll see an alert for each ready state.

这个回调函数会运行多次——每次就绪状态都会改变——您可以看到每个就绪状态的警告。

Moreover, you can also specify a callback function if you request JSON data from the service.

此外，如果您向服务请求JSON数据，还可指定回调函数。

The inbound representation of the operation request MAY contain a "webhook" field, whose value is a URI where the client expects a callback.

请求操作的入站消息可能包含一个“webhook”域，如果客户端期待回调，该域的值是一个URI；

This is the final request/response portion of the Basic callback scenario described in the WS-I Usage Scenarios document.

这是 WS-I 使用情形文档中描述的基本回调情形的最后的请求／响应部分。