如果你使用Grunt，你可以添加一个任务来删除/注释console.log语句。因此console.log不再被调用。

https://www.npmjs.org/package/grunt-remove-logging-calls

这是来自SolutionYogi和Chris s的答案的混合。它维护console.log行号和文件名。jsFiddle示例。

// Avoid global functions via a self calling anonymous one (uses jQuery)
(function(MYAPP, $, undefined) {
    // Prevent errors in browsers without console.log
    if (!window.console) window.console = {};
    if (!window.console.log) window.console.log = function(){};

    //Private var
    var console_log = console.log;  

    //Public methods
    MYAPP.enableLog = function enableLogger() { console.log = console_log; };   
    MYAPP.disableLog = function disableLogger() { console.log = function() {}; };

}(window.MYAPP = window.MYAPP || {}, jQuery));


// Example Usage:
$(function() {    
    MYAPP.disableLog();    
    console.log('this should not show');

    MYAPP.enableLog();
    console.log('This will show');
});

我自己弄明白后发现了这个帖子。以下是我的解决方案:

const testArray = {
  a: 1,
  b: 2
};
const verbose = true; //change this to false to turn off all comments
const consoleLog = (...message) => {
  return verbose ? console.log(...message) : null;
};

console.log("from console.log", testArray);
consoleLog("from consoleLog", testArray);
// use consoleLog() for the comments you want to be able to toggle.

在脚本中重新定义console.log函数。

console.log = function() {}

够了，不再给控制台发消息了。

编辑:

扩展了Cide的想法。一个自定义记录器，您可以使用它从代码中切换登录。

从我的Firefox控制台:

var logger = function()
{
    var oldConsoleLog = null;
    var pub = {};

    pub.enableLogger =  function enableLogger() 
                        {
                            if(oldConsoleLog == null)
                                return;

                            window['console']['log'] = oldConsoleLog;
                        };

    pub.disableLogger = function disableLogger()
                        {
                            oldConsoleLog = console.log;
                            window['console']['log'] = function() {};
                        };

    return pub;
}();

$(document).ready(
    function()
    {
        console.log('hello');

        logger.disableLogger();
        console.log('hi', 'hiya');
        console.log('this wont show up in console');

        logger.enableLogger();
        console.log('This will show up!');
    }
 );

如何使用上面的“记录器”?在就绪事件中，调用记录器。disableLogger使控制台消息不被记录。向记录器添加调用。enabllogger和logger。在希望将消息记录到控制台的方法中的disableLogger。

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?

这是我刚刚研究的一个相当详尽的解决方案。我介绍了https://developer.mozilla.org/en-US/docs/Web/API/console中所有完全支持的控制台方法

1. 创建js文件“logger.js”，并将以下代码放入其中

logger = {
    assert: function() {
        if(logger.active && logger.doAssert) {
            console.assert.apply(null,arguments);
        }
    },
    clear: function() {
        if(logger.active && logger.doClear) {
            console.clear();
        }
    },
    count: function() {
        if(logger.active && logger.doCount) {
            console.count.apply(null,arguments);
        }
    },
    countReset: function() {
        if(logger.active && logger.doCountReset) {
            console.countReset.apply(null,arguments);
        }
    },
    debug: function() {
        if(logger.active && logger.doDebug) {
            console.debug.apply(null,arguments);
        }
    },
    dir: function() {
        if(logger.active && logger.doDir) {
            console.dir.apply(null,arguments);
        }
    },
    dirxml: function() {
        if(logger.active && logger.doDirxml) {
            console.dirxml.apply(null,arguments);
        }
    },
    error: function() {
        if(logger.active && logger.doError) {
            console.error.apply(null,arguments);
        }
    },
    group: function() {
        if(logger.active && logger.doGroup) {
            console.group.apply(null,arguments);
        }
    },
    groupCollapsed: function() {
        if(logger.active && logger.doGroup) {
            console.groupCollapsed.apply(null,arguments);
        }
    },
    groupEnd: function() {
        if(logger.active && logger.doGroup) {
            console.groupEnd.apply(null,arguments);
        }
    },
    info: function() {
        if(logger.active && logger.doInfo) {
            console.info.apply(null,arguments);
        }
    },
    log: function() {
        if(logger.active && logger.doLog) {
            console.log.apply(null,arguments);
        }
    },
    table: function() {
        if(logger.active && logger.doTable) {
            console.table.apply(null,arguments);
        }
    },
    time: function() {
        if(logger.active && logger.doTime) {
            console.time.apply(null,arguments);
        }
    },
    timeEnd: function() {
        if(logger.active && logger.doTime) {
            console.timeEnd.apply(null,arguments);
        }
    },
    timeLog: function() {
        if(logger.active && logger.doTime) {
            console.timeLog.apply(null,arguments);
        }
    },
    trace: function() {
        if(logger.active && logger.doTrace) {
            console.trace.apply(null,arguments);
        }
    },
    warn: function() {
        if(logger.active && logger.doWarn) {
            console.warn.apply(null,arguments);
        }
    },
    active: true,
    doAssert: true,
    doClear: true,
    doCount: true,
    doCountReset: true,
    doDebug: true,
    doDir: true,
    doDirxml: true,
    doError: true,
    doGroup: true,
    doInfo: true,
    doLog: true,
    doTable: true,
    doTime: true,
    doTrace: true,
    doWarn: true
};

2. 在所有脚本之前，在所有页面中都包含日志

3.将脚本中的所有“console.”替换为“logger.”

4. 使用

就像"console "一样，但是和"logger "连用

logger.clear();
logger.log("abc");

最后禁用部分或全部日志

//disable/enable all logs
logger.active = false; //disable
logger.active = true; //enable

//disable some logs
logger.doLog = false; //disable
logger.doInfo = false; //disable

logger.doLog = true; //enable
logger.doInfo = true; //enable

logger.doClear = false; //log clearing code will no longer clear the console.

EDIT

在我最近的项目中使用我的解决方案一段时间后，我意识到很难记住我应该使用logger。而不是主机。所以出于这个原因，我决定重写控制台。这是我的最新解决方案:

const consoleSubstitute = console;
console = {
    assert: function() {
        if(console.active && console.doAssert) {
            consoleSubstitute.assert.apply(null,arguments);
        }
    },
    clear: function() {
        if(console.active && console.doClear) {
            consoleSubstitute.clear();
        }
    },
    count: function() {
        if(console.active && console.doCount) {
            consoleSubstitute.count.apply(null,arguments);
        }
    },
    countReset: function() {
        if(console.active && console.doCountReset) {
            consoleSubstitute.countReset.apply(null,arguments);
        }
    },
    debug: function() {
        if(console.active && console.doDebug) {
            consoleSubstitute.debug.apply(null,arguments);
        }
    },
    dir: function() {
        if(console.active && console.doDir) {
            consoleSubstitute.dir.apply(null,arguments);
        }
    },
    dirxml: function() {
        if(console.active && console.doDirxml) {
            consoleSubstitute.dirxml.apply(null,arguments);
        }
    },
    error: function() {
        if(console.active && console.doError) {
            consoleSubstitute.error.apply(null,arguments);
        }
    },
    group: function() {
        if(console.active && console.doGroup) {
            consoleSubstitute.group.apply(null,arguments);
        }
    },
    groupCollapsed: function() {
        if(console.active && console.doGroup) {
            consoleSubstitute.groupCollapsed.apply(null,arguments);
        }
    },
    groupEnd: function() {
        if(console.active && console.doGroup) {
            consoleSubstitute.groupEnd.apply(null,arguments);
        }
    },
    info: function() {
        if(console.active && console.doInfo) {
            consoleSubstitute.info.apply(null,arguments);
        }
    },
    log: function() {
        if(console.active && console.doLog) {
            if(console.doLogTrace) {
                console.groupCollapsed(arguments);
                consoleSubstitute.trace.apply(null,arguments);
                console.groupEnd();
            } else {
                consoleSubstitute.log.apply(null,arguments);
            }
        }
    },
    table: function() {
        if(console.active && console.doTable) {
            consoleSubstitute.table.apply(null,arguments);
        }
    },
    time: function() {
        if(console.active && console.doTime) {
            consoleSubstitute.time.apply(null,arguments);
        }
    },
    timeEnd: function() {
        if(console.active && console.doTime) {
            consoleSubstitute.timeEnd.apply(null,arguments);
        }
    },
    timeLog: function() {
        if(console.active && console.doTime) {
            consoleSubstitute.timeLog.apply(null,arguments);
        }
    },
    trace: function() {
        if(console.active && console.doTrace) {
            consoleSubstitute.trace.apply(null,arguments);
        }
    },
    warn: function() {
        if(console.active && console.doWarn) {
            consoleSubstitute.warn.apply(null,arguments);
        }
    },
    active: true,
    doAssert: true,
    doClear: true,
    doCount: true,
    doCountReset: true,
    doDebug: true,
    doDir: true,
    doDirxml: true,
    doError: true,
    doGroup: true,
    doInfo: true,
    doLog: true,
    doLogTrace: false,
    doTable: true,
    doTime: true,
    doTrace: true,
    doWarn: true
};

现在你可以使用控制台。像往常一样。