google chrome extension - how to get current tabId from background page

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google chrome extension - how to get current tabId from background page

posted Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

google chrome extension - how to get current tabId from background page

how to get current tabId from background page? current tabId is the tab that user can see its content.

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>

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1 Reply

深蓝 · Answer 1 · 2021-10-23T18:38:54+0000

getSelected has been deprecated. The new way to do it is:

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

If you want to perform some callback on the active tab, you can wrap the above as so:

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

For example

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

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google chrome extension - how to get current tabId from background page

google chrome extension - how to get current tabId from background page

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