Firefox Context Menu Item Functionality

// create empty url variable
var url = ""

/*
 * The click event listener: 
 * where we perform the approprate action 
 * given the ID of the menu item that was clicked
 */

browser.contextMenus.onClicked.addListener((info, tab) => {
    // copy the selection to clipboard
    navigator.clipboard.writeText(info.selectionText);

    switch (info.menuItemId) {
            case "Alien IP":
                url = "https://otx.alienvault.com/indicator/ip/"+info.selectionText;
                break;
                    }
    browser.tabs.create({url: url});
});