Javascript Chrome扩展-从后台向后台发送消息
我想从后台发送一个Javascript Chrome扩展-从后台向后台发送消息,javascript,google-chrome,Javascript,Google Chrome,我想从后台发送一个chrome.runtime.sendMessage,并在后台捕获它 我在background.js中做了如下操作 chrome.runtime.onMessage.addListener(messageListener); function messageListener (request, sender, sendResponse) { switch (request.action) { case "backgroundEvent1":
chrome.runtime.sendMessage
,并在后台捕获它
我在background.js中做了如下操作
chrome.runtime.onMessage.addListener(messageListener);
function messageListener (request, sender, sendResponse) {
switch (request.action) {
case "backgroundEvent1":
console.log("backgroundEvent1"); // Not appear
break;
}
}
chrome.runtime.sendMessage({ action: "backgroundEvent1" });
我怎样才能在后台发送消息并在后台再次捕获它
(PS-除了chrome.runtime.sendMessage之外,我已经知道了其他方法)可能的重复