sessions.setTabValue()

Syntax

let storing = browser.sessions.setTabValue(
  tabId,    // integer
  key,      // string
  value     // string or object
)

Parameters

tabId

integer. ID of the tab with which you want to associate the data. Error is thrown if ID is invalid.

key

string. Key that you can later use to retrieve this particular data value.

value

string or object. If this is an object it is stringified, so object methods, for example, will be omitted. If a function is given here it will be stored as the value null.

Return value

A Promise that will be resolved with no arguments if the call succeeded. If the call failed (for example, because the tab ID could not be found) then the promise will be rejected with an error message.

Examples

Set a value on the active tab when the user selects a menu item. Note that you'll need the "menus" permission to run this example:

async function setOnActiveTab() {
  let tabArray = await browser.tabs.query({
    currentWindow: true,
    active: true,
  });
  let tabId = tabArray[0].id;
  await browser.sessions.setTabValue(tabId, "my-key", "my-value");
}

browser.menus.create({
  id: "my-item",
  title: "my item",
  contexts: ["all"],
});

browser.menus.onClicked.addListener(setOnActiveTab);

Example extensions

• session-state

Browser compatibility