问题描述
我正在尝试在发出请求后删除 chrome.extension.onRequest.addListener 添加的 onRequest 侦听器，如下所示:
I am trying to remove the onRequest listener added by chrome.extension.onRequest.addListener after a request is made, like this:
chrome.extension.onRequest.addListener(
function(request){
chrome.extension.onRequest.removeListener();
other_function(request);
}
);
问题是我不知道这是否有效.我尝试了 chrome.extension.onRequest.hasListener，这似乎没有给出正确的答案，所以我想知道是否还有其他方法可以删除 onRequest 侦听器或检查监听器是否存在.
The problem is that I don't know if this works or not. I tried chrome.extension.onRequest.hasListener, which seems not to give the right answer, so I am wondering if there are some other ways to remove the onRequest listener or check if the listener exists or not.
谢谢！
推荐答案
removeListener 接受一个参数.您需要命名监听函数，然后按名称将其删除:
removeListener takes an argument. You need to name the listener function and then remove it by name:
function doStuff(request){
chrome.extension.onRequest.removeListener(doStuff);
other_function(request);
}
chrome.extension.onRequest.addListener(doStuff);
或者，更简洁:
chrome.extension.onRequest.addListener(
function doStuff(request){
chrome.extension.onRequest.removeListener(doStuff);
other_function(request);
}
);
这篇关于如何在 Chrome 扩展中删除事件监听器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！