Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Pesquisar no apoio

Evite burlas no apoio. Nunca iremos solicitar que telefone ou envie uma mensagem de texto para um número de telefone ou que partilhe informações pessoais. Por favor, reporte atividades suspeitas utilizando a opção "Reportar abuso".

Saber mais

Problem with javascript:alert(document.lastModified)

  • 4 respostas
  • 31 têm este problema
  • 52 visualizações
  • Última resposta por esemones

After I upgraded to Firefox 6.0.1 and now today to 6.0.2, I'm unable to get any response to my using javascript:alert(document.lastModified)

in order to get a web page date.
After I upgraded to Firefox 6.0.1 and now today to 6.0.2, I'm unable to get any response to my using javascript:alert(document.lastModified) in order to get a web page date.

Solução escolhida

Are you running that code via the location bar?

You can no longer run JavaScript code via the location bar in Firefox 6 and later.
You can see an error message in the Tools > Error Console.
That code now gets a null principal for security reasons and doesn't have any effect (Bug 656433).
You need to create a (keyword) bookmarklet and run the code by invoking that bookmark.

NoScript can allow you to run such code via the location bar, see:

Ler esta resposta no contexto 👍 2

Todas as respostas (4)

Solução escolhida

Are you running that code via the location bar?

You can no longer run JavaScript code via the location bar in Firefox 6 and later.
You can see an error message in the Tools > Error Console.
That code now gets a null principal for security reasons and doesn't have any effect (Bug 656433).
You need to create a (keyword) bookmarklet and run the code by invoking that bookmark.

NoScript can allow you to run such code via the location bar, see:

Modificado por cor-el a

Thanks for the guidance. When I couldn't find the "add bookmark" option, I took one of my old, unused bookmarks and severely modified its properties. Now when I enter its keyword into the location area up pops the date and time I wanted. But for the several web pages I've looked at, the date and time is always the present date and time. another problem.

A lot of websites are generated dynamically by a script (e.g. PHP or other server side script) that runs on the server and in that case you will always see the current date.

Thanks, again. I suspected something like that. Regards, ES