与 YUI 2.7 同步 GET 请求？

发布于 2024-07-18 10:01:05 字数 731 浏览 5 评论 0原文

我对 YUI 比较陌生 - 浏览他们很棒的文档，我没有找到同步加载外部资源的方法或标志。

或者反过来问问题；对于每个匹配的节点，我需要调用一个方法，该方法在节点上插入一些内容；对于异步调用，记住的标识符似乎混乱了。

因此，回调需要坚持

pid

调用函数的时间，而不是执行回调的时间 - 我说得对吗？

var platform_ids = YAHOO.util.Selector.query('.platform_id'); 

for (var i = 0; i < platform_ids.length; i++) {
    var pid = platform_ids[i].getAttribute("id");
    var sUrl = "/platform/" + pid + "/description/";
    var callback = { success: function(o) { 
        document.getElementById(pid).innerHTML =  o.responseText; }}
    var transaction = YAHOO.util.Connect.asyncRequest(
        'GET', sUrl, callback, null
    );
}

谢谢。 MYYN

原文

i'm relatively new to YUI - browsing their great docs, i do not find a method or a flag to load an external resource synchronously.

or the question the other way around; for each matched node i need to call a method, which inserts something at the node; with asynchronous calls the remembered identifiers seem to mess up.

therefore the callback need to stick to the

pid

when the function is called, not when the callback gets executed - am i getting this right?

var platform_ids = YAHOO.util.Selector.query('.platform_id'); 

for (var i = 0; i < platform_ids.length; i++) {
    var pid = platform_ids[i].getAttribute("id");
    var sUrl = "/platform/" + pid + "/description/";
    var callback = { success: function(o) { 
        document.getElementById(pid).innerHTML =  o.responseText; }}
    var transaction = YAHOO.util.Connect.asyncRequest(
        'GET', sUrl, callback, null
    );
}

thanks.
MYYN

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月牙弯弯 2024-07-25 10:01:05

您不需要同步请求。用户体验可能很糟糕。您实际上只想将一个值传递给您的回调，以便它不依赖于 pid （正如您所注意到的，当您的回调被调用时，它通常会具有不同的值）：

var callback = { success: function(o) 
  { 
    document.getElementById(o.argument).innerHTML =  o.responseText; 
  }, 
  argument: pid
};

在这里，我使用argument回调成员来保存ID，并在回调函数本身中引用它，确保每个回调都使用正确的ID。

You don't want a synchronous request. The user experience can be awful. You really just want to pass a value to your callback so that it's not relying on pid (which, as you've noticed, will usually have a different value when your callback is called):

var callback = { success: function(o) 
  { 
    document.getElementById(o.argument).innerHTML =  o.responseText; 
  }, 
  argument: pid
};

Here, I use the argument callback member to hold the ID, and reference that in the callback function itself, ensuring each callback uses the correct ID.

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