我用下面的函數打開選項卡,請確保它尚未打開,焦點切換到它:
function OpenAndReuseOneTabPerURL(url)
{
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"].getService(Components.interfaces.nsIWindowMediator);
var browserEnumerator = wm.getEnumerator("navigator:browser");
// Check each browser instance for our URL
var found = false;
while (!found && browserEnumerator.hasMoreElements())
{
var browserWin = browserEnumerator.getNext();
var tabbrowser = browserWin.gBrowser;
// Check each tab of this browser instance
var numTabs = tabbrowser.browsers.length;
for (var index = 0; index < numTabs; index++)
{
var currentBrowser = tabbrowser.getBrowserAtIndex(index);
if (url == currentBrowser.currentURI.spec)
{
// The URL is already opened. Select this tab.
tabbrowser.selectedTab = tabbrowser.tabContainer.childNodes[index];
// Focus *this* browser-window
browserWin.focus();
found = true;
break;
}
}
}
// Our URL isn't open. Open it now.
if (!found)
{
var recentWindow = wm.getMostRecentWindow("navigator:browser");
if (recentWindow) {
// Use an existing browser window
recentWindow.delayedOpenTab(url, null, null, null, null);
} else {
// No browser windows are open, so open a new one.
window.open(url);
}
}
}
這樣使用它:
OpenAndReuseOneTabPerURL("http://yoururl.com");