In Firefox 41, bookmarklets (bookmarks with a javascript: URL, e.g. javascript: alert("it works"), run from a click or a keyword) stopped working. Is there any solution to use javascript: bookmarks in Firefox 41?
Previously seen, understood and solved in Javascript bookmark stopped working in Firefox 13:
If you first load almost any URL, including about:blank, then a Javascript bookmark will work in that tab.
Since Firefox's default behavior for new tabs is about:newtab, which is nothing, and bookmarklets only run once something is loaded, you can do the following to set a default page, and then run bookmarklets:
- open
about:config - find
browser.newtab.url - double-click and change from
about:newtabtoabout:blank(or URI of your choice) Ctrl-Tand run bookmarklets in new tabs!
But this no longer works
I can only assume it's related to the browser.newtabpage setting activated by default. However, disabling the newtabpage features did not re-enable it.
Other reports of the issue, and solutions, online refer only to installing the New Tab Override extension. That does work - but is there another way, other than by installing an extension?
According to ghacks, Mozilla wanted the feature removed from about:config and only re-settable via extension:
The
browser.newtab.urlpreference has no exposed UI, is not really supported, and is abused by search hijackers. We should remove it and encourage people using a non-default new tab page to install an add-on instead.
So, unless policy reverses itself (unlikely, as this is not the first time Mozilla has removed about:config features and insisted they be replaced by extensions), using an extension like New Tab Override is the only option.
UPDATE: If you install New Tab Override, you must configure it first, and manually add about:blank to the extension settings.
来源：https://stackoverflow.com/questions/32782860/javascript-bookmarklet-stopped-working-in-firefox-41