访问window.console后覆盖

问题描述

覆盖后可以以某种方式访问​​console.log吗？

Is it possible to somehow access to console.log after it gets overwritten?

window.console = { log: function (msg) { alert(msg); }, /* etc... */ };

是否可以重新获得原来的console.log功能？

Would be it be possible to regain the original console.log functionality?

推荐答案

您可以在覆盖之前备份控制台。

You can back up the console before overwriting it.

var oldConsole = window.console;
window.console = { log:function(msg){alert(msg)} //...};

然后您可以使用 oldConsole 变量。

Then you can use the oldConsole variable.

oldConsole.log('test');

如果无法备份，可以创建iFrame，然后从控制台窃取（这在所有浏览器中可能无效）：

If you can't back it up, you can create an iFrame, and then steal the console from there (this may not work in all browsers):

var i = document.createElement('iframe');
i.style.display = 'none';
document.body.appendChild(i);
window.console = i.contentWindow.console;

演示：

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