sessions.removeTabValue() - Mozilla | MDN
Syntax
js
let removing = browser.sessions.removeTabValue(
tabId, // integer
key // string
)
Parameters
tabId-
integer. ID of the tab whose data you are trying to remove. Error is thrown if ID is invalid. key-
string. Key identifying the particular value to remove. This needs to match the key previously given insessions.setTabValue.
Return value
A Promise that will be resolved no arguments if the item was successfully removed. 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
This code adds two context menu items: one stores a value associated with the current tab, the other one removes it:
js
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");
}
async function removeFromActiveTab() {
let tabArray = await browser.tabs.query({
currentWindow: true,
active: true,
});
let tabId = tabArray[0].id;
await browser.sessions.removeTabValue(tabId, "my-key");
}
browser.menus.create({
id: "add-my-item",
title: "add item",
contexts: ["all"],
});
browser.menus.create({
id: "remove-my-item",
title: "remove item",
contexts: ["all"],
});
browser.menus.onClicked.addListener((info) => {
if (info.menuItemId === "add-my-item") {
setOnActiveTab();
} else {
removeFromActiveTab();
}
});