---
title: Output
---
## Output
There are 4 common ways in which data can be output to the console. These will be the primarily used output methods as part of your development process.
#### `console.log`
It is the most commonly used way to output the data. It's a common practice to insert a couple of these between statements to uderstand how the data is flowing and processed. Also, you can use `debugger` or breakpoints in devtools to do the same without polluting your code.
```javascript
var numbers = [ 1, 2, 3, 4, 5, 6, 7];
numbers.forEach(function(number){
console.log(number + ' is divisible by 2', number%2 == 0);
});
```
#### `console.warn`
As you guessed by the name this is used for showing warnings, and it's typical yellow color differentiates it from an error's red text & `console.log`.
```javascript
function isAdult(age){
if(Number(age) < 18){
console.warn('You are not an adult');
return false;
}
return true;
}
```
#### `console.error`
This is used when throwing an exception or an error. Errors usually show up in red text.
#### `console.table`
Suppose you got a list of items or movies in a json object and you want to check that out in table format, then `console.table` is your best bet. It automatically detects rows and column headers from data.
*Try to run the code below in your console*
```javascript
var data = {
"colors": [
{
"color": "black",
"category": "hue",
"type": "primary",
"rgba": [255,255,255,1],
"hex": "#000"
},
{
"color": "white",
"category": "value",
"rgba": [0,0,0,1],
"hex": "#FFF"
},
{
"color": "red",
"category": "hue",
"type": "primary",
"rgba": [255,0,0,1],
"hex": "#FF0"
},
{
"color": "blue",
"category": "hue",
"type": "primary",
"rgba": [0,0,255,1],
"hex": "#00F"
},
{
"color": "yellow",
"category": "hue",
"type": "primary",
"rgba": [255,255,0,1],
"hex": "#FF0"
},
{
"color": "green",
"category": "hue",
"type": "secondary",
"rgba": [0,255,0,1],
"hex": "#0F0"
},
]
}
console.table(data.colors);
```
Also, you can control & filter the type of output you wish to see in console.
1. All
2. Verbose
3. Warning
4. Errors
#### More Information:
- Complete reference of console object by Google
- Console MDN