Front end certification: Drum Machine, 25 + 5 clock, JavaScript calculator

JavaScript
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Hello everyone. I’ve been trying to do the projects in the topic above. I managed to get them running well on my device, also passed tests for the 25+5 clock when i ran them on my local device. However, when i put them on code pen and run tests, I get none of the tests right(for 25+5 clock) and only one right(for the other two projects). Please help me. 25+ 5: https://codepen.io/Evronz/pen/BaMJgMJ , Javascript Calculator: https://codepen.io/Evronz/pen/ZEwvdqw , DrumMachine: https://codepen.io/Evronz/pen/RwvxzLR .Any assistance is very welcome in advance.

Besides the above, I’ve failed to get the freecode camp test scripts to be visible in my random quote generator athttps://codepen.io/Evronz/pen/abXJVWG

Blockquote

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if you change the import

import ReactDOM from "https://esm.sh/react-dom";

it will render the page…

1 Like
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25 + 5 clock:

const audio = document.getElementById("beep");

You do not have this element in the HTML. So when you call .pause() it throws an error.

Uncaught TypeError: Cannot read properties of null (reading ‘pause’)

Calculator:

You are missing all the required ids.

Random Quote Machine:

Just add the test script to the settings as you did in the other Codepens.

Again, you are missing ids and you are not using the attribute correctly.

MDN: Global attributes id

An id 's value must not contain whitespace (spaces, tabs, etc.). Browsers treat non-conforming IDs that contain whitespace as if the whitespace is part of the ID. In contrast to the class attribute, which allows space-separated values, elements can only have one single ID value.

1 Like
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Thank you for that. I did that and it rendered the pages.

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Yes, you were right about the id attribute and audio element not being there for it to call. Thank you so much for reminding me.

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