在Chrome中拦截对console.log的调用 [英] Intercept calls to console.log in Chrome

问题描述

我有一个脚本，我不能改变，使很多console.log调用。我想添加另一个层，并回应如果调用包含某些字符串。这在FF中工作，但在第4行的Chrome中引发了非法调用错误：

I have a script that I can't change that makes a lot of console.log calls. I want to add another layer and respond if the calls contain certain strings. This works in FF, but throws an "Illegal invocation" error in Chrome on the 4th line:

var oldConsole = {};
oldConsole.log = console.log;
console.log = function (arg) {
    oldConsole.log('MY CONSOLE!!');
    oldConsole.log(arg);
}

任何想法如何解决？我还试过克隆控制台...

Any ideas how to get around that? I also tried cloning the console...

推荐答案

您需要调用 console.log 在 console 的上下文中：chrome：

You need to call console.log in the context of console for chrome:

(function () {
  var log = console.log;
  console.log = function () {
    log.call(this, 'My Console!!!');
    log.apply(this, Array.prototype.slice.call(arguments));
  };
}());

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