IE8中的控制台未定义问题 [英] Console undefined issue in IE8

问题描述

据我所知，如果调试窗口打开，IE只会将 console 视为对象。如果调试窗口未打开，它会将控制台视为未定义。

I understand that IE only treats console as an object if the debug window is open. If the debug window is not open, it treats console as undefined.

这就是我决定添加 if 检查的原因：

Which is why I decided to add an if check like this :

        if(console)
            console.log('removing child');

我的理解是，如果 console 未定义，它将跳过的console.log 即可。但是在IE8中， if（控制台）行通过，我在 console.log 之前得到了一个未定义的异常。这很奇怪。

My understanding is that if console is undefined it will skip the console.log. However in IE8 the if(console) line passes and I get an undefined exception like before at console.log. This is weird.

有没有解决方法呢？
以及如何在代码中编写控制台以便在所有三种浏览器上运行？

Is there a way around this? and how do you code console in your code so that it runs on all three browsers?

推荐答案

你可以添加以下if子句：

You could add the following to the if clause:

if (console && console.log) {
    console.log('removing child');
}

或者在console.log函数周围写一个日志包装器。

Or write a log wrapper around the console.log function like this.

window.log = function () {
    if (this.console && this.console.log) {
        this.console.log(Array.prototype.slice.call(arguments));
    }
}

像这样使用：

log("This method is bulletproof", window, arguments");

这里有一个jsfiddle：
http： //jsfiddle.net/joquery/4Ugvg/

And here is a jsfiddle for this: http://jsfiddle.net/joquery/4Ugvg/

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