Chrome how to get the current tab's id?

Question

chrome.tabs.getCurrent(function(tab)｛
  alert(tab.id);
});

Is tab an object? Why doesn't it have an id property?

How can I get the id of the current tab?

Have you looked at these? https://developer.chrome.com/extensions/tabs#method-getCurrent and https://developer.chrome.com/extensions/tabs#type-Tab — Patrick Roberts, May 29 '16 at 07:58
Are you running this code from the context of a chrome extension? This code won't work unless it's running from a chrome extension with `"permissions": [ "tabs" ]` — Patrick Roberts, May 29 '16 at 08:04
@PatrickRoberts I'm new here and i'm new to learn this,thanks for your patience! — woody, May 29 '16 at 08:45
@PatrickRoberts The "tabs" permission is only necessary for reading private informate, url, title, etc. — Daniel Herr, May 30 '16 at 01:22

Vasiliy vvscode Vanchuk · Accepted Answer · 2016-05-29T08:12:59.483

chrome.tabs.getCurrent(function(tab){ console.log(JSON.stringify(tab,null, 2)); }) gives me next

{
  "active": true,
  "audible": false,
  "favIconUrl": "chrome-extension://eggkanocgddhmamlbiijnphhppkpkmkl/img/favicon.png",
  "height": 853,
  "highlighted": true,
  "id": 5280,
  "incognito": false,
  "index": 0,
  "mutedInfo": {
    "muted": false
  },
  "pinned": false,
  "selected": true,
  "status": "complete",
  "title": "Tabs Outliner",
  "url": "chrome-extension://eggkanocgddhmamlbiijnphhppkpkmkl/activesessionview.html?type=main&focusNodeId=5220&altFocusNodeId=5046&scrollToViewWinId=5046",
  "width": 400,
  "windowId": 5279
}

List of all props you can find at https://developer.chrome.com/extensions/tabs#type-Tab --- id marked as optional

The ID of the tab. Tab IDs are unique within a browser session. Under some >circumstances a Tab may not be assigned an ID, for example when querying >foreign tabs using the sessions API, in which case a session ID may be present. >Tab ID can also be set to chrome.tabs.TAB_ID_NONE for apps and devtools >windows.

That's important if you try run code from console

Tab ID can also be set to chrome.tabs.TAB_ID_NONE for apps and devtools >windows.

Consider replacing your screenshot with the text content of `JSON.stringify(tab, null, 2);` or something. — Patrick Roberts, May 29 '16 at 08:10
Yeah, it seems to be the only one possible method. I use it like this:`chrome.tabs.query({currentWindow: true, active: true}, function(tabs){ chrome.tabs.update(tabs[0].id, { url: "link"}); } );` — user25, Aug 27 '16 at 07:20

Chrome how to get the current tab's id?

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