我写了一个ES2015解决方案(仅用于Webpack)。

class logger {
  static isEnabled = true;

  static enable () {
    if(this.constructor.isEnabled === true){ return; }

    this.constructor.isEnabled = true;
  }

  static disable () {
    if(this.constructor.isEnabled === false){ return; }

    this.constructor.isEnabled = false;
  }

  static log () {
    if(this.constructor.isEnabled === false ) { return; }

    const copy = [].slice.call(arguments);

    window['console']['log'].apply(this, copy);
  }

  static warn () {
    if(this.constructor.isEnabled === false ) { return; }

    const copy = [].slice.call(arguments);

    window['console']['warn'].apply(this, copy);
  }

  static error () {
    if(this.constructor.isEnabled === false ) { return; }

    const copy = [].slice.call(arguments);

    window['console']['error'].apply(this, copy);
  }
}

描述:

Along with logger.enable and logger.disable you can use console.['log','warn','error'] methods as well using logger class. By using logger class for displaying, enabling or disabling messages makes the code much cleaner and maintainable. The code below shows you how to use the logger class: logger.disable() - disable all console messages logger.enable() - enable all console messages logger.log('message1', 'message2') - works exactly like console.log. logger.warn('message1', 'message2') - works exactly like console.warn. logger.error('message1', 'message2') - works exactly like console.error. Happy coding..

你可以使用javascript AOP(例如jquery-aop)来拦截所有对console.debug/log的调用，如果某个全局变量被设置为false，就不进行实际的调用。

您甚至可以(不时地)执行ajax调用，这样就可以更改服务器上启用/禁用日志的行为，当在登台环境或类似环境中遇到问题时启用调试，这可能非常有趣。

嘿~让我们用现代的2022方式来做~

ES6中引入了代理和反射。这些是我们正在寻找的工具，使console.log被条件“禁用”。

在传统的方法中，你必须创建另一个函数，像这样:

    let console_disabled = true;

    function console_log() {
      if (!console_disabled) {
        console.log.apply(console, arguments); //Dev Tools will mark the coding line here
      }
    }

但是，这将创建另一个函数，并且您无法使用Dev Tools中显示的编码行记录消息。

这就是2022年之路。

// Disable Console Log without altering debug coding line. // No override original `console` object let console_disabled = false; const nullFunc = function(){}; const _console = new Proxy(console, { get(target, prop, receiver){ if(prop==='log' && console_disabled){ return nullFunc; } return Reflect.get(...arguments) } }); console_disabled = true; _console.log('you cannot see me'); console_disabled = false; _console.log('you can see me @ line 18'); console_disabled = true; _console.log('you cannot see me'); console_disabled = false; _console.log('you can see me @ line 22');

您还可以重写原来的控制台对象。

// Disable Console Log without altering debug coding line. // Override original `console` object let console_disabled = false; const nullFunc = function(){}; console = new Proxy(console, { get(target, prop, receiver){ if(prop==='log' && console_disabled){ return nullFunc; } return Reflect.get(...arguments) } }); console_disabled = true; console.log('you cannot see me'); console_disabled = false; console.log('you can see me @ line 18'); console_disabled = true; console.log('you cannot see me'); console_disabled = false; console.log('you can see me @ line 22');

有关代理和反射的详细信息， 请访问https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy

令我惊讶的是，在所有这些答案中，没有人把它们结合起来:

没有jquery 匿名函数不污染全局命名空间 窗口的句柄情况。控制台未定义 只需修改控制台的.log函数

我会选这个:

(function () {

    var debug = false

    if (debug === false) {
        if ( typeof(window.console) === 'undefined') { window.console = {}; }
        window.console.log = function () {};
    }
})()

你可以使用logeek，它可以让你控制你的日志消息的可见性。你可以这样做:

<script src="bower_components/dist/logeek.js"></script>

logeek.show('security');

logeek('some message').at('copy');       //this won't be logged
logeek('other message').at('secturity'); //this would be logged

你也可以使用logeek.show('nothing')来完全禁用每条日志消息。

我认为2020年最简单、最容易理解的方法是创建一个像log()这样的全局函数，你可以选择以下方法之一:

const debugging = true;

function log(toLog) {
  if (debugging) {
    console.log(toLog);
  }
}

function log(toLog) {
  if (true) { // You could manually change it (Annoying, though)
    console.log(toLog);
  }
}

你可以说这些功能的缺点是:

您仍然在运行时调用函数 您必须记住在第二个选项中更改调试变量或if语句 您需要确保在加载所有其他文件之前加载了该函数

And my retorts to these statements is that this is the only method that won't completely remove the console or console.log function which I think is bad programming because other developers who are working on the website would have to realize that you ignorantly removed them. Also, you can't edit JavaScript source code in JavaScript, so if you really want something to just wipe all of those from the code you could use a minifier that minifies your code and removes all console.logs. Now, the choice is yours, what will you do?