Help in understanding javascript THIS keyword

JavaScript
1

HI, Iam not able to understand this keyword i dont know what this means inside function, inside class, inside function which is inside class, i need to understand what rules to follow while using this keyword .Kindly help

2

There is a lot of info on the net about it. Did you try searching for it?

3

If you don’t see reading about is as an option, your best bet is to write some very simple classes/regular functions/arrow functions and console.log(this) in every possible scenario. If you do that outside of all functions/classes, you’ll see that it’ll log the global browser window object, for instance.

4

Hi ,
i may come to know value of this doing console.log but still how could i use it at my will, though iam reading the link given above

5

Don’t beat yourself up if you don’t fully understand this yet in all contexts. I’ve a fairly good understanding of it, but still, whenever I use it, I first console.log it in my code to see if I really have gotten it right. It’ll take experience, it’s hard to understand just by reading theory about it.

6

actually i started learning react and there is so much this keyword i need to figure out this soon enough otherwise i will stuck badly . what rules u follow while using this specially in javascript classes?

7

Hi i asked for help regarding “this keyword” wont got enough help so i started learning from book but now there is another problem if anyone could explain this text in plain english that would be great…----

“To understand this binding, we have to understand the call-site: the
location in code where a function is called (not where it’s declared).
We must inspect the call-site to answer the question: what is this this
a reference to?
Finding the call-site is generally “go locate where a function is called
from,” but it’s not always that easy, as certain coding patterns can obscure
the true call-site.
What’s important is to think about the call-stack (the stack of functions
that have been called to get us to the current moment in execution).
The call-site we care about is in the invocation before the currently
executing function.”

thanks in advance

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