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JavaScript

Posted by Edwin Billa
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Edwin Billa
Full Stack JavaScript Techdegree Student 4,690 Points

Help on syntax "nameActions[action]()"

Hello, I'm confused about this syntax "nameActionsaction" used in the video, Is there any resource where I can read and have in-depth understanding about it. Thanks

https://teamtreehouse.com/library/refactor-2-readable-branching-logic

Steven Parker
Steven Parker
243,266 Points
Steven Parker
Steven Parker
243,266 Points

Which video? Could you post a link to it?

2 Answers

Steven Parker
Steven Parker
243,266 Points
Steven Parker
Steven Parker
243,266 Points

This is a bit of a guess...

Since I'm not even sure what course this is for, but just by looking at nameActions[action]() I would guess that nameActions is an object that contains a number of method (function) properties. And then action would be a parameter passed to it that contains the name of the specific method to use. Finally the parentheses () cause that method to be invoked.

Does that help? If not, please post more specifics about the course and video in question.

Edwin Billa
.a{fill-rule:evenodd;}techdegree
Edwin Billa
Full Stack JavaScript Techdegree Student 4,690 Points

https://teamtreehouse.com/library/refactor-2-readable-branching-logic Sorry this is the video

Steven Parker
Steven Parker
243,266 Points
Steven Parker
Steven Parker
243,266 Points

Hey .. it looks like my guess was correct. The code in the video uses the text written on the button as the action to choose which method to invoke.

Did my explanation cover what you were looking for?

Edwin Billa
.a{fill-rule:evenodd;}techdegree
Edwin Billa
Full Stack JavaScript Techdegree Student 4,690 Points

Yes. That helped. I would love to know any resources I can read to further go in-depth with explanations.

Steven Parker
Steven Parker
243,266 Points
Steven Parker
Steven Parker
243,266 Points

It's a clever implementation, but of pretty basic concepts. Anything about JavaScript Objects or "Object Oriented JavaScript" would cover the concepts being used here.

Edwin Billa
seal-mask
.a{fill-rule:evenodd;}techdegree
Edwin Billa
Full Stack JavaScript Techdegree Student 4,690 Points
Edwin Billa
.a{fill-rule:evenodd;}techdegree
Edwin Billa
Full Stack JavaScript Techdegree Student 4,690 Points

Oh ok. Thank you Steven. I'm headed to that course after this course I'm currently on.