嵌套函数-未定义变量

Question

  

错误：此处未定义“ chromeWindow.state”

你能给我正确的方向吗？

chrome.runtime.onMessage.addListener(function(message,sender,sendResponse) 
{
  chrome.windows.get(sender.tab.windowId, function(chromeWindow) {
    // chromeWindow is DEFINED HERE
    console.log('sending to contentscript :', chromeWindow.state);
  });
  // chromeWindow.state is UNDEFINED
  sendResponse(**chromeWindow.state**);
});

Answer 1

chrome.runtime.onMessage.addListener(function(message,sender,sendResponse) 
{
  chrome.windows.get(sender.tab.windowId, function(chromeWindow) {
      sendResponse(chromeWindow.state);
  });
});