JavaScript 警报在 Firefox 6 中不起作用

本文介绍了JavaScript 警报在 Firefox 6 中不起作用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我尝试在 Firefox 6 的地址栏中运行此 JavaScript 代码:

I tried running this JavaScript code in the address bar in Firefox 6:

javascript:alert("Hello")

我得到一个

参考错误:警报未定义.

ReferenceError: alert not defined.

它曾经在 Firefox 5 中运行良好，但仍然适用于 Opera、Safari 和 Chrome.我该如何解决?

It used to work fine in Firefox 5 though, and still works on Opera, Safari and Chrome. How do I fix this?

推荐答案

目前似乎不能使用 javascript: 和 data: 网址(直接在地址栏中)允许根据此评论:

It seems using javascript: and data: URLs (directly in the address bar) are currently not allowed as per this comment:

仅供参考，我可能会将这个错误分成多个短期和长期修复.

FYI, I'm probably going to split this bug into multiple, short and longer term fixes.

短期:禁止将 javascript: URL 粘贴到 URL 栏中长期:另外要求书签在书签管理器在它可以运行 JavaScript 之前

Short term: disallow pasting of javascript: URLs into the URL bar Longer term: additionally require that bookmarklets be "whitelisted" in the Bookmark Manager before it can run JavaScript

还有这是在最新版本.最后评论还指出:

javascript: 实际上并没有被忽略——它们是运行的，但是在一个空"的上下文中，没有任何你期望的常用 DOM 方法，所以最常见的用法(例如 javascript:alert(1))只是抛出(因此被有效地忽略).不过 javascript:1+1 工作正常.

javascript: is not actually ignored - they're run, but in an "empty" context that doesn't have any of the usual DOM methods you would expect, so most common uses (e.g. javascript:alert(1)) just throw (and thus are effectively ignored). javascript:1+1 works fine, though.

现在:

我该如何解决这个问题?

How do I fix this?

你不能，你必须等到他们决定一个合适的解决方案.正如评论所说，书签可以工作，但必须明确允许.如果您只想测试代码，请使用 Firebug 或新的 Scratchpad 功能.

You can't, you have to wait until they decided for a proper solution. As the comment said, bookmarklets will work, but must be explicitly allowed. If you just want to test code, use either Firebug or the new Scratchpad feature.