I have this object:

    const myObject = {
       &quot;a&quot;:&quot;a&quot;,
       &quot;b&quot;:{
          &quot;c&quot;:&quot;c&quot;,
          &quot;d&quot;:{
             &quot;e&quot;:&quot;e&quot;,
             &quot;f&quot;:{
                &quot;g&quot;:&quot;g&quot;,
                &quot;h&quot;:{
                   &quot;i&quot;:&quot;i&quot;
                }
             }
          }
       }
    };

But when I try to show it using `console.log(myObject)`, I receive this output:

    { a: &#39;a&#39;, b: { c: &#39;c&#39;, d: { e: &#39;e&#39;, f: [Object] } } }

How can I get the full object, including the content of property `f`?

How can I get the full object in Node.js&#39;s console.log(), rather than &#39;[Object]&#39;?

Is there a method for printing to the console without a trailing newline? The `console` object [documentation][1] doesn&#39;t say anything regarding that:

&gt; **`console.log()`**
&gt;
&gt; Prints to stdout with newline. This function can take multiple arguments in a `printf()`-like way. Example:
&gt;
&gt;     console.log(&#39;count: %d&#39;, count);
&gt;
&gt; If formating elements are not found in the first string then `util.inspect` is used on each argument.


  [1]: https://nodejs.org/docs/v0.4.8/api/stdio.html#console.log

Node.js: printing to console without a trailing newline?

What is the use of `console.log`? 

Please explain how to use it in JavaScript, with a code example.


What is console.log?

Below, you can see the output from these two logs. The first clearly shows the full object with the property I&#39;m trying to access, but on the very next line of code, I can&#39;t access it with `config.col_id_3` (see the &quot;undefined&quot; in the screenshot?). Can anyone explain this? I can get access to every other property except `field_id_4` as well.

    console.log(config);
    console.log(config.col_id_3);

This is what these lines print in Console

![Console output][1]


  [1]: http://i.stack.imgur.com/8Ag2y.png

Can&#39;t access object property, even though it shows up in a console log

I have been adding logs to the console to check the status of different variables without using the Firefox debugger. 

However, in many places in which I add a `console.log` in my `main.js` file, I receive the following error instead of my lovely little handwritten messages to myself: 

&gt;Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user&#39;s experience. For more help http://xhr.spec.whatwg.org/

What alternatives to or wrappers for `console.log` can I add to my code use that will not cause this error? 

Am I &quot;doing it wrong&quot;? 

JavaScript console.log causes error: &quot;Synchronous XMLHttpRequest on the main thread is deprecated...&quot;

Can I configure `console.log` so that the logs are written on a file instead of being printed in the console?

Configure Node.js to log to a file instead of the console

`console.log` statements output nothing at all in Jest. This was working for me yesterday, and all of sudden, it&#39;s not working today. I have made zero changes to my config and haven&#39;t installed any updates.

I&#39;m not using the `--forceExit` option. Still seeing this issue.

Console.log statements output nothing at all in Jest

Google  has not been helpful for me, since searching for &quot;console.debug&quot; just brings up a bunch of pages that have the words &quot;console&quot; and &quot;debug&quot; on them.

I&#39;m wondering what the difference is between `console.log()` and `console.debug()`. Is there some way to use a bunch of `console.debug()` statements and then just flip a switch to easily shut off all debug statements from being sent to the console (like after launching a site)?

Difference between console.log() and console.debug()?

I’ll start with the code:

```js
var s = [&quot;hi&quot;];
console.log(s);
s[0] = &quot;bye&quot;;
console.log(s);
```

Simple, right? In response to this, the Firefox console says:

```js
[ &quot;hi&quot; ]
[ &quot;bye&quot; ]
```

Wonderful, but Chrome’s JavaScript console (7.0.517.41 beta) says:

```js
[ &quot;bye&quot; ]
[ &quot;bye&quot; ]
```

Have I done something wrong, or is Chrome’s JavaScript console being exceptionally lazy about evaluating my array?

[![Screenshot of the console exhibiting the described behavior.][1]][1]  


  [1]: https://i.stack.imgur.com/LvR0l.png

Is Chrome’s JavaScript console lazy about evaluating objects?

In Safari with no add-ons (and actually most other browsers), `console.log` will show the object at the last state of execution, not at the state when `console.log` was called.

I have to clone the object just to output it via `console.log` to get the state of the object at that line.

__Example:__

    var test = {a: true}
    console.log(test); // {a: false}
    test.a = false; 
    console.log(test); // {a: false}

How can I make console.log show the current state of an object?

I am trying to log a long array so I can copy it quickly in my terminal. However, if I try and log the array it looks like:

    [&#39;item&#39;,
     &#39;item&#39;,
      &gt;&gt;more items&lt;&lt;&lt;
      ... 399 more items ]

How can I log the entire array so I can copy it really quickly? 

Dumping whole array: console.log and console.dir output &quot;... NUM more items]&quot;

I&#39;m making a simple game in JavaScript but in the story I need it to say the players name. so what I have so far is:

    var name = prompt(&quot;what is your name?&quot;);
        
    console.log(&quot;story&quot; name &quot;story);

how do I do the second line? or there is another way I could do this. Is it possible to have 2 `console.log();` on 1 line in the console?




How can I add a variable to console.log?

I am very new to programming (have taken some of the JS courses on Codecademy). I am trying to create a simple script to determine, if given a spreadsheet with results from a poker game, who should pay whom. I opened up Google Apps Script, and wrote the following to get started:

    function addplayerstoArray(numplayers) {
      
      var playerArray = [];
      
      for (i=0; i&lt;numplayers; i++) {
        playerArray.push(i);
      }
    }  
    
    addplayerstoArray(7);
    
    console.log(playerArray[3])

The idea is to create an array with the total number of players in it. When running the code, I thought it would print &quot;3&quot; to the console. But nothing happened. It said 

&gt; &quot;ReferenceError: &quot;console&quot; is not defined.&quot; 

A) What do I not understand about how the Google Apps Script console works with respect to printing so that I can see if my code is accomplishing what I&#39;d like?

B) Is it a problem with the code?


Printing to the console in Google Apps Script?

When I evaluate an expression directly in the Chrome Console like 

    1 + 1
then I can reference to the evaluated value using 

    $_
![enter image description here][1]

However, I can&#39;t access the value with $_, when the value is a result of a console.log, coming from inside of my application, instead of an expression I typed directly into the console.

![enter image description here][2]

Is there a way to access the last evaluated expression, regardless where it came from?

  [1]: http://i.stack.imgur.com/M86fa.png
  [2]: http://i.stack.imgur.com/hPFjx.png

Access last logged value in Chrome console

Chrome console shows me &quot;Navigated to http://localhost....&quot; in blue letters 

Image: 
![enter image description here][1]


  [1]: http://i.stack.imgur.com/gnYnA.jpg

Chrome console shows me &quot;Navigated to http://localhost....&quot;

For some reason, the prototype framework (or another JavaScript code) that is shipped with [Magento][1] is replacing standard console functions, so I can&#39;t debug anything. Writing down in JavaScript console `console` I get the following output:

    &gt; console
    Object
    assert: function () {}
    count: function () {}
    debug: function () {}
    dir: function () {}
    dirxml: function () {}
    error: function () {}
    group: function () {}
    groupEnd: function () {}
    info: function () {}
    log: function () {}
    profile: function () {}
    profileEnd: function () {}
    time: function () {}
    timeEnd: function () {}
    trace: function () {}
    warn: function () {}

I&#39;m using `Google Chrome version 13.0.782.112` on Linux.

`Prototype JavaScript framework, version 1.6.0.3`

Is there a quick way to solve this?

  [1]: http://en.wikipedia.org/wiki/Magento


Restoring console.log()

I was helping a colleague debug some code today and I noticed a strange behavior with `console.log()` in Google Chrome:

It appears that if you:

1. Create a nested array (e.g., [[345,&quot;test&quot;]])

2. Log the array to the console with `console.log()`.

3. Modify one of the inner array values, then `console.log()` will output the later value -- **not** the values of the array at the time the `console.log()` was executed.

**JavaScript**:

    var test = [[2345235345,&quot;test&quot;]]
    console.log(test);
    test[0][0] = 1111111;
    // outputs: [[1111111,&quot;test&quot;]]
    
    var testb = {};
    testb.test = &quot;test&quot;;
    console.log(testb);
    testb.test = &quot;sdfgsdfg&quot;;
    // outputs: {&quot;testb&quot;:&quot;test&quot;}

    
    var testc = [&quot;test&quot;,&quot;test2&quot;];
    console.log(testc);
    testc[0] = &quot;sdxfsdf&quot;;
    // outputs: [&quot;test&quot;,&quot;test2&quot;]

**[JSFiddle Example][1]**

This behavior does not happen in Firefox.

Also to note, if I stepped through his code line by line in the Chrome debugger, then `console.log()` would output the correct values.

Is there an explanation for this strange phenomenon or is it just a bug with Google Chrome? 

**EDIT:**

I&#39;ve narrowed down the steps to reproduce the inconsistent `console.log()` behavior: 

If you add this script to your page:

    var greetings=[&#39;hi&#39;,&#39;bye&#39;];
    console.log(greetings);
    setTimeout(function(){
        greetings.push(&#39;goodbye&#39;);
    },3000);

and open it in a new window with the Chrome **console window already open**, then the `console.log()` output will be different than if you load the page with the **console window closed**. [Here&#39;s a JSFiddle that demonstrates that](http://jsfiddle.net/markasoftware/kcGkZ/).

In the first case, with the console window already open, `console.log()` will output the current value of the array (i.e., two items). 

In the second case, with the console window initially closed and opened only *after* the page loads, `console.log()` will output the later values of the array (i.e., three items). 

Is this a bug in Google Chrome&#39;s `console.log()` functionality?

  [1]: http://jsfiddle.net/ju3ZV/2/
  [2]: https://vidd.me/dLH

Google Chrome console.log() inconsistency with objects and arrays

    console.log(&quot;hi&quot;) gives 
    undefined
    hi
    
    console.log(1+1) gives 
    undefined
    2

Whether it&#39;s a string or integer calculation, I get undefined then the correct answer.

Why do I get the undefined message?  Is there a good way to avoid it?


Why does console.log say undefined, and then the correct value?

Recently I logged into my FB account on Chrome Browser. When I opened the developer tools, I saw something like this:

![enter image description here][1]

Now I know that it is possible to add anything to console using the javascript `console.log` function. But my question is -- how did they add style to the text? E.g. &quot;Stop!&quot; is written in red tahoma font with black border and larger size. How did they do it?


  [1]: http://i.stack.imgur.com/GJzdr.png

All console.log Solutions on Gang of Coders

Total of 19 console.log Solutions

How can I get the full object in Node.js's console.log(), rather than '[Object]'?