我使用第三方库提供的功能。这个函数有一个回调函数作为参数,但我想等待此回调继续之前调用。有没有一个标准/接受的方式做到这一点?
I am using a function supplied by a third party library. This function takes a callback function as a parameter, but I would like to wait for this callback to be called before continuing. Is there a standard / accepted way to do this?
推荐答案我不知道这对你是一个可能的解决方案,但你可以通过实现你的破code到2功能所需的结果。假设这是你打算做什么:
I am not sure if this is a possible solution for you but you can achieve the desired result by breaking your code into 2 functions. Suppose this is what you intend to do:
基本上,这是你原来的功能:
Basically this is your original function:
function origFunc() { codeBeforeThirdPartyFunc(); ThirdPartyFunc(oldCallBackFunc); Wait(); codeAfterCallBackFunc(); }您可以像修改code流量:
You can modify the code flow with something like:
function newFunc() { codeBeforeThirdPartyFunc(); ThirdPartyFunc(newCallBackFunc); } function newCallBackFunc() { oldCallBackFunc(); codeAfterCallBackFunc(); }这将消除等待循环。而据我所知,忙等待并不在IE浏览器(因为?只有上帝知道)。
This will eliminate the wait loop. And as far as I know, busy waiting doesn't work in IE (because ? God only knows)..
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