更改控制台对象引用后，可以访问控制台 [英] Get access to the console once the console object reference was changed

问题描述

我喜欢制作用户脚本。获得对你最喜欢的页面的更多控制或加速它的加载真的很有趣。

I like making userscripts. It's real fun to get some more control of your favorite page or just speed up it's loading.

我遇到一个问题，一个页面要么定义一个控制台引用一个新的虚拟对象：

Curently, I came across a problem that a page either defines console reference to a new dummy object:

window.console = {log: function() {}, info: function() {} ... };

或者它甚至会破坏这些功能：

Or it even destroys the functions:

window.console.log = function() {};
window.console.info = function() {};
...

^{我正在使用窗口让我明白我在谈论全球范围。此外，我没有故意使用快速分配相同的功能，在第二个例子中}

^{I'm using window to make it obvious that I'm talking about the global scope. Also, I didn't use quick assigment to the same function on purpose, in the second example}

现在你将如何处理这个问题？提醒工作很好，但我已经习惯了Firebug和它的控制台了很多。

无法表达我对任何帮助的优雅程度。

Now how would you deal with this? Alerts work nice, but I've got used to Firebug and it's console quite a lot.
Can't express how graceful will I be for any help.

PNS。：目前，英雄联盟论坛是相关网站。运行以下代码以查看问题：

PNS.: Currently, the League of Legends forums is the site in question. Run the following code to see the problem:

window.console.log.toString(); //returns "function () {}"

推荐答案

，我在这里有一个令人讨厌的解决方案。创建一个iframe（创建新窗口）并获取该iframe的控制台对象：

Well, I've got one nasty solution here. Create an iframe (which creates new window) and get the console object of that iframe:

function healConsole() {
  //<iframe> element
  var iframe = document.createElement("iframe");
  //Hide it somewhere
  iframe.style.position="fixed";
  iframe.style.height = iframe.style.width = "1px";
  iframe.style.top = iframe.style.left = "-5px";
  //No src to prevent loading some data
  iframe.src = "about: blank";
  //Needs append to work
  document.body.appendChild(iframe);
  //Get the inner console
  window.console = iframe.contentWindow.console;
}

不确定跨浏览器是怎么回事。我正在寻找更好的东西...

Not sure how cross browser is this though. I'm looking for something better...

这篇关于更改控制台对象引用后，可以访问控制台的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！