清除 Google Chrome 中的 javascript 控制台

Question

I was wondering if I could clear up the console with some command..

console.log() , can print... is there a command to clear up console?..

I've tried to console.log(console); and got this functions below...

assert: function assert() { [native code] }
constructor: function Console() { [native code] }
count: function count() { [native code] }
debug: function debug() { [native code] }
dir: function dir() { [native code] }
dirxml: function dirxml() { [native code] }
error: function error() { [native code] }
group: function group() { [native code] }
groupEnd: function groupEnd() { [native code] }
info: function info() { [native code] }
log: function log() { [native code] }
markTimeline: function markTimeline() { [native code] }
profile: function profile() { [native code] }
profileEnd: function profileEnd() { [native code] }
time: function time() { [native code] }
timeEnd: function timeEnd() { [native code] }
trace: function trace() { [native code] }
warn: function warn() { [native code] }
__proto__: Object

[ I guess there's no way to clear up the console... but I wanted someone to say it to me... ]

Answer 1

Update: console.clear() is available in all browsers

Update: As of November 6, 2012, console.clear() is now available in Chrome Canary.

---

If you type clear() into the console it clears it.

I don't think there is a way to programmatically do it, as it could be misused. (console is cleared by some web page, end user can't access error information)

one possible workaround:

in the console type window.clear = clear , then you'll be able to use clear in any script on your page.

Answer 2

There's always the good ol' trick:

console.log("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");

or a shorter variation of the above:

console.log('\n'.repeat('25'));

Not the most elegant solution, I know :) ... but works.

For me, I usually just print a long "-----" separator line to help make the logs easier to read.

Answer 3

这似乎工作得很好：

console.clear();

Answer 4

If you use console.clear() , that seems to work in chrome. Note, it will output a "Console was cleared" message.

Note, I got an error right after clearing the console, so it doesn't disable the console, only clears it. Also, I have only tried this in chrome, so I dont know how cross-browser it is.

EDIT: I tested this in Chrome, IE, Firefox, and Opera. It works in Chrome, MSIE and Opera's default consoles, but not in Firefox's, however, it does work in Firebug.

Answer 5

If you want to just clear the console when debugging, you can simply click the "ban-circle" ⃠ button to clear console.log.

Alternatively just press "Ctrl+L" to clear the console using your keyboard.

Answer 6

Chrome:

console._commandLineAPI.clear();

Safari:

console._inspectorCommandLineAPI.clear();

You can create your own variable, which works in both:

if (typeof console._commandLineAPI !== 'undefined') {
    console.API = console._commandLineAPI;
} else if (typeof console._inspectorCommandLineAPI !== 'undefined') {
    console.API = console._inspectorCommandLineAPI;
} else if (typeof console.clear !== 'undefined') {
    console.API = console;
}

After that, you can simply use console.API.clear() .

Answer 7

you can use

console.clear();

if you are working with javascript coding.

else you can use CTR+L to clear cosole editor.

Answer 8

Press CTRL+L Shortcut to clear log , even if you have ticked Preserve log option.
Hope this helps.

Answer 9

在 Mac 上，您也可以像在终端中一样使用⌘+K 。

Answer 10

console._inspectorCommandLineAPI.clear()

那是工作

Answer 11

A handy compilation of multiple answers for clearing the console programmatically (from a script, not the console itself):

if(console._commandLineAPI && console._commandLineAPI.clear){
    console._commandLineAPI.clear();//clear in some safari versions
}else if(console._inspectorCommandLineAPI && console._inspectorCommandLineAPI.clear){
    console._inspectorCommandLineAPI.clear();//clear in some chrome versions
}else if(console.clear){
    console.clear();//clear in other chrome versions (maybe more browsers?)
}else{
    console.log(Array(100).join("\n"));//print 100 newlines if nothing else works
}

Answer 12

Instead of typing command just press:

CLTRL + L

to clear chrome console

Answer 13

I use the following to alias cls when debugging locally in Chrome (enter the following JavaScript into the console):

Object.defineProperty(window, 'cls', {
    get: function () {
        return console.clear();
    }
});

now entering cls in the console will clear the console.

Answer 14

在 Chrome 控制台上用鼠标右键单击，我们可以选择清除控制台

Answer 15

Chrome - Press CTRL + L while focusing the console input.

Firefox - clear() in console input.

Internet Explorer - Press CTRL + L while focusing the console input.

Edge - Press CTRL + L while focusing the console input.

Have a good day!

Answer 16

Based on Cobbal's answer , here's what I did:

In my JavaScript I put the following:

setInterval(function() {
  if(window.clear) {
    window.clear();
    console.log("this is highly repeated code");
  }
}, 10);

The conditional code won't run until you ASSIGN window.clear (meaning your log is empty until you do so). IN THE DEBUG CONSOLE TYPE:

window.clear = clear;

Violà - a log that clears itself.

Mac OS 10.6.8 - Chrome 15.0.874.106

Answer 17

On MacOS :

1. Chrome - CMD + K
2. Safari - CMD + K
3. Firefox - No shortcut

On Linux :

1. Chrome - CTRL + L
2. Firefox - No shortcut

On Windows :

1. Chrome - CTRL + L
2. IE - CTRL + L
3. Edge - CTRL + L
4. Firefox - No shortcut

To make it work in Firefox, userscripts can be used. Download GreaseMonkey extension for FF.

document.addEventListener("keydown",function(event){
    if(event.metaKey && event.which==75) //CMD+K
    {
        console.clear();
    }
});

In the script, update the metadata with the value, //@include *://*/* , to make it run on every pages. It will work only when the focus is on the page. It's just a workaround.

Answer 18

I think this is no longer available due to 'security issues'.

console.log(console) from code gives:

Console
memory: MemoryInfo
profiles: Array[0]
__proto__: Console

From outside of code, _commandLineAPI is available. Kind of annoying because sometimes I want to just log and not see the old output.

Answer 19

I'm going to add to this, as it's a search that came out top on google..

When using ExtJS / Javascript I insert this and the console is cleared out - unless there is an error..

console.log('\033[2J');

I'm more than likely way off course, but this is how I clear the console for each page load/refresh.