在jQuery.getScript处理错误 [英] Handling errors in jQuery.getScript

问题描述

jQuery的 getScript加入的功能似乎不支持一个错误回调函数。我不能使用全球ajax的错误处理code在这里，当地的误差函数将是理想的。

jQuery's getScript function doesn't seem to support an error callback function. I can't use the global ajax error handling code here, a local error function would be ideal.

文件回调中获取数据/ textStatus似乎不正确 - 回调得既不

Documentation that the callback gets data/textStatus seems incorrect - the callback gets neither.

我如何检测调用getScript加入失败（服务器不可用，例如）有什么建议？

Any suggestions on how I detect that a call to getScript failed (server not available, for instance)?

编辑：只是看着源，它似乎是回调时才会激活成功，数据始终设置为null，textStatus没有定义的（因为它是一个成功的，只是回调，我presume）。该文档是非常不正确的此功能。

Just looked at source, and it seems like the callback is only invoked on success, with data always set to null and textStatus not defined (since it's a success-only callback, I presume). The documentation is very incorrect for this function.

推荐答案

这是一个黑客位，但..

This is a bit of a hack, but..

您可以宣布脚本里面的变量加载，并检查它已加载脚本（假定完成功能还是触发）后：

You could declare a variable inside the scripts you load and check for it after you've loaded a script (assuming that the complete-function still fires):

script_test.js：

script_test.js:

var script_test = true;

然后：

$.getScript("script_test.js", function ()
{
    if (typeof script_test !== undefined) alert("script has been loaded!");
});

或者你可以试试，看看无论是在脚本中，确实存在 - 函数，变量，对象等。


一个更通用的方法，这样做会增加你要加载的脚本里面自动执行的功能，使它们在你的主脚本执行函数：

Or you could just try and see if whatever is in your script, actually exists--functions, variables, objects, etc.


A more generic way to do this would be adding a self-executing function inside the scripts you want to load, and make them execute a function in your "main" script:

main_script.js：

main_script.js:

function scriptLoaded(scriptName)
{
    alert(scriptName + " loaded!");
}

$.getScript("script_test.js");

script_test.js：

script_test.js:

(function ()
{
    scriptLoaded("script_test.js");
})();

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