1

在后台js中：

chrome.tabs.onActivated.addListener((activeInfo)=>{
        var tabId=activeInfo.tabId;
        console.log("tab switched: "+tabId);
        chrome.tabs.get(tabId,(tab)=>{
          console.log("getTabById: "+tab);
        });
        chrome.tabs.getSelected(null, function(tab) {
         
          console.log("getTabByUsingSelected: "+tab);
        });
        chrome.tabs.query({"active":true,"currentWindow":true,'lastFocusedWindow': true}, (tabs)=>{
          if (chrome.runtime.lastError) {
          }else{
          if(tabs!==undefined){
           console.log("getTabByQuery: "+tabs[0].url);
          }
        }
        }); 
      });

显现：

"manifest_version":2
         "permissions":[
        "storage",  
        "activeTab",
        "tabs",
        "<all_urls>"
      ],
      "background":{
      "scripts": ["background.js"]
    },

当我不使用查询时，响应总是未定义的。查询只在第一次工作

4

0 回答 0