Question

如何从后台页面获取当前tabId？ current tabId是用户可以看到其内容的标签。

background.html

<html>
<head>
    <script>

    if(typeof localStorage.state == 'undefined')
        localStorage.state = 'off'
    chrome.browserAction.onClicked.addListener(function(tab) {
        if(localStorage.state == 'on')
        {
            localStorage.state = 'off';
        }
        else
        {
            localStorage.state = 'on';
        }
        chrome.browserAction.setBadgeText({text: localStorage.state, tabId: tab.id});
        chrome.tabs.sendRequest(tab.id, {state: localStorage.state});
        //chrome.tabs.sendRequest(tab.id, {state: localStorage.state});
    });
    </script>
</head>

Answer 1

getSelected已deprecated。新方法是：

chrome.tabs.query(
  {currentWindow: true, active : true},
  function(tabArray){...}
)

如果要在活动选项卡上执行某些回调，可以将上述内容包装为：

function doInCurrentTab(tabCallback) {
    chrome.tabs.query(
        { currentWindow: true, active: true },
        function (tabArray) { tabCallback(tabArray[0]); }
    );
}

例如

var activeTabId;
doInCurrentTab( function(tab){ activeTabId = tab.id } );

Answer 2

在后台页面中运行

chrome.tabs.query({active:true,windowType:"normal", currentWindow: true},function(d){console.debug(d);})

甚至更好

chrome.tabs.query({active:true,windowType:"normal", currentWindow: true},function(d){console.debug(d[0].id);})

Answer 3

许多API方法将null解释为当前标签。 chrome.tabs.sendRequest就是其中之一。

否则：

chrome.tabs.getSelected(null, function(tab) { ... })

Answer 4

If you have tabs user permission, the query method is this: chrome.tabs.query

getCurrentWindowActiveTabIndex().then(tabIndex => {
    // do something
});

// asnyc getter, not just a regular 'thunk'
function getCurrentWindowActiveTabIndex () {
    return new Promise((resolve, reject) => {
        chrome.tabs.query({
            currentWindow: true,
            active: true,
        }, (currentWindowActiveTabs = []) => {
            if (!currentWindowActiveTabs.length) reject();
            resolve(currentWindowActiveTabs[0].index);
        });
    });
}

如何从后台页面获取当前tabId

4 个答案: