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JavaScript DOM Scripting By Example Improving the Application Code Refactor 2: Readable Branching Logic

shaun bolak
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shaun bolak
Front End Web Development Techdegree Graduate 18,080 Points
Posted by shaun bolak
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shaun bolak
Front End Web Development Techdegree Graduate 18,080 Points

Javascript DOM scripting - click event listener not firing after refactoring...

Hi all^^

So, after the final refactor of the guest list webpage example showcasing DOM scripting, the event listener on the buttons (remove, edit, save) have ceased to function.

I have spent about an hour comparing my code, line by line, to that of the instructor's and to that of other student examples. There must be a simple error that I am not seeing. However, I am unable to ascertain where and what is the cause.

If someone could take a look, it would greatly help my sanity... ; )

Code Snapshot:

https://w.trhou.se/zz23am7fiq

2 Answers

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

It looks like the button legends don't match the action names (for example: "Edit" with capital "E" vs. "edit" with little "e").

Since JavaScript identifiers are case-sensitive, they have to match exactly for the method invocation using bracket notation on "nameActions" to work.

shaun bolak
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shaun bolak
Front End Web Development Techdegree Graduate 18,080 Points
shaun bolak
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shaun bolak
Front End Web Development Techdegree Graduate 18,080 Points

Hi Steven. Thank you for your answer. Actually, I tried both case types when I was debugging this (and again, just now, to be sure). It still does function since the refactoring. Is there anything else that you noticed?

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

I'm pretty sure that's the issue, you just have to make sure all instances of each name match in the code. There's two for "Remove", and three each for "Edit" and "Save".

Kristina Savova
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Kristina Savova
Full Stack JavaScript Techdegree Graduate 21,997 Points

Hi Steven! I had the same kind of problem. Thank you a lot for your help!

Michael Kristensen
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Michael Kristensen
Full Stack JavaScript Techdegree Graduate 26,251 Points

I kind of expected this to happen all the way through this subject, because Gil deliberately didn't write the button-labels with an initial capital, and that didn't seem right to me, visually.