<h2 id="heading-hoisting">Hoisting</h2>
basically in hoisting, a variable is called before it is intialised or declared. yeah, there is a difference between initialising a variable and declaring a variable.
Hoisting is one of the most famous topic about which interviewers ask.
<pre><code class="lang-javascript">console.log(a)
var a = 10;
</code></pre>
now you might think that how is this even possible. so, now let's open up this code and understand how will javascript interpret and run this code.
<ul>
<li>first the JS will took the "var a" and initialised it on top before executing any other thing.
</li>
<li>so, now "a" is initialised we just have to declare it to set it's value but we know that if we don't give any value to a variable then it will give us undefined when we will call it.
<pre><code class="lang-javascript"> var a;
 console.log(a)
 a = 10;
</code></pre>
 now the javascript will read the previous code as shown above
</li>
<li>if you have any doubt in it feel free to comment or reach me out at <a href="http://github.com/oscaroptics" class="autolinkedURL autolinkedURL-url" target="_blank">github.com/oscaroptics</a>
</li>
</ul>

## Hoisting

basically in hoisting, a variable is called before it is intialised or declared. yeah, there is a difference between initialising a variable and declaring a variable.

Hoisting is one of the most famous topic about which interviewers ask.

```javascript
console.log(a)
var a = 10;
```

now you might think that how is this even possible. so, now let's open up this code and understand how will javascript interpret and run this code.

* first the JS will took the "var a" and initialised it on top before executing any other thing.
    
* so, now "a" is initialised we just have to declare it to set it's value but we know that if we don't give any value to a variable then it will give us undefined when we will call it.
    
    ```javascript
    var a;
    console.log(a)
    a = 10;
    ```
    
    now the javascript will read the previous code as shown above
    
* if you have any doubt in it feel free to comment or reach me out at github.com/oscaroptics

Hoisting in Javascript

Hoisting

a computer science geek exploring the javascript and backend of web applications


Hoisting in Javascript

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Hoisting