console = console || { 
    debug: function(){}, 
    log: function(){}
    ...
}

if (typeof console == "undefined") {
  this.console = {
    log: function() {},
    info: function() {},
    error: function() {},
    warn: function() {}
  };
}

您可以在Firefox中直接使用console.log(…)，但不能在ie中使用。在ie中，你必须使用window.console。

另一种选择是typeof操作符:

if (typeof console == "undefined") {
    this.console = {log: function() {}};
}

还有一种替代方法是使用日志库，比如我自己的log4javascript。

You can use the below to give an extra degree of insurance that you've got all bases covered. Using typeof first will avoid any undefined errors. Using === will also ensure that the name of the type is actually the string "undefined". Finally, you'll want to add a parameter to the function signature (I chose logMsg arbitrarily) to ensure consistency, since you do pass whatever you want printed to the console to the log function. This also keep you intellisense accurate and avoids any warnings/errors in your JS aware IDE.

if(!window.console || typeof console === "undefined") {
  var console = { log: function (logMsg) { } };
}

我使用的是fauxconsole;我修改了css一点，使它看起来更好，但工作得很好。