Birmingham | 26-ITP-May | Tobias Amaechina | Sprint 1 | coursework by Tobias-Amaechina · Pull Request #1369 · CodeYourFuture/Module-Structuring-and-Testing-Data

Tobias-Amaechina · 2026-06-21T07:49:40Z

Learners, PR Template

Self checklist

I have titled my PR with Region | Cohort | FirstName LastName | Sprint | Assignment Title
My changes meet the requirements of the task
I have tested my changes
My changes follow the style guide

Changelist

This is PR for coursework Solutions for Sprin-1 of the "Module-Structuring- and Testing-Data Module, it covers key exercises on JavaScript fundamentals (variable assignments, string manipulations , String methods ,random numbers , and mandatory error fixing activities along with interpretation exercises that test understanding of code behaviour and syntax .
1-key-exercises/ — 4 files with solutions for count, initials, paths, and random number generation
2-mandatory-errors/ — 5 files fixing syntax/logic errors (comments, variable scope, type issues, naming)
3-mandatory-interpret/ — 3 files with detailed explanations of code behavior
4-stretch-explore/ — 2 files exploring browser APIs and object concepts

…lash index

…t variable

… given values

…minimum +1)

…o I used let keyword to declare the variable

…r instead of string

… and it reads number, I have to comment out slice method line of code

… original code to see that error message says TypeError: cardNumber.slice is not a function

…e quotes around the numbers and printing last4Digits

…$ so the the first varible was name was updated to start with doller sign

cjyuan · 2026-06-23T21:31:18Z

 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.

-let initials = ``;
+let initials = `"${firstName[0]}${middleName[0]}${lastName[0]}"`;


Note: Usually the double quotes surrounding a string are not part of the sting value; they are only used to indicate the boundary of the string.

No change needed.

Noted , Thanks

cjyuan · 2026-06-23T21:33:12Z

@@ -1,9 +1,17 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";


Suppose you were not allowed to modify the statement const cardNumber = 4533787178994213;
(that is, keep the variable's value unchanged).
How would you modify the code (through type conversion) to still being able to use .slice(-4) to extract the last 4 digits from the given number.

Used .toString() method to cast the number to string type

cjyuan · 2026-06-23T21:35:26Z

+const $12HourClockTime = "8:53pm";
+const _hourClockTime = "20:53";


Identifiers that begin with _ or $ are valid variable names. However, they are usually used by convention to signal special meaning.

Could you explore names that start with alphabets instead? Feel free to ask AI for suggestion.

Used best practices to rename the variable as recommended in JavaScript

cjyuan · 2026-06-23T21:37:08Z

-// b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?

+// b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// The error is occurring on line 5., and it's a SyntaxError: missing , The error is due to a missing comma in the replaceAll() method. The correct syntax should be replaceAll(",", ""). To fix this problem, we need to add the missing comma in the replaceAll() method on line 5


We could more precisely describe "A comma is missing between "," and "" in the function call" as:
A comma is missing between the ___________s.

Could you look up the programming term that belongs in the blank?

I have giveb the right terminology to the variable in the blank function call

Tobias-Amaechina · 2026-06-24T17:36:55Z

All issus raised has been resolved

github-actions · 2026-06-24T17:37:41Z

The changed files in this PR don't match what is expected for this task.

Please check that you committed the right files for the task, and that there are no accidentally committed files from other sprints.

Please review the changed files tab at the top of the page, we are only expecting changes in this directory: ^Sprint-1/

If this PR is not coursework, please add the NotCoursework label (and message on Slack in #cyf-curriculum or it will probably not be noticed).

If this PR needs reviewed, please add the 'Needs Review' label to this PR after you have resolved the issues listed above.

Tobias-Amaechina · 2026-06-24T17:38:31Z

All issues raised has been addressed

github-actions · 2026-06-24T17:39:01Z

The changed files in this PR don't match what is expected for this task.

Please check that you committed the right files for the task, and that there are no accidentally committed files from other sprints.

Please review the changed files tab at the top of the page, we are only expecting changes in this directory: ^Sprint-1/

If this PR is not coursework, please add the NotCoursework label (and message on Slack in #cyf-curriculum or it will probably not be noticed).

If this PR needs reviewed, please add the 'Needs Review' label to this PR after you have resolved the issues listed above.

github-actions · 2026-06-24T18:56:49Z

The changed files in this PR don't match what is expected for this task.

Please check that you committed the right files for the task, and that there are no accidentally committed files from other sprints.

Please review the changed files tab at the top of the page, we are only expecting changes in this directory: ^Sprint-1/

If this PR is not coursework, please add the NotCoursework label (and message on Slack in #cyf-curriculum or it will probably not be noticed).

If this PR needs reviewed, please add the 'Needs Review' label to this PR after you have resolved the issues listed above.

cjyuan · 2026-06-24T19:39:31Z

Deleted files are also considered "changes". Here's one way to fix the problem.

Reverting Changes

One way to revert changes to a file is via the git restore command.

First, locate a commit before the file was modified. It could be the first commit you made, assuming the branch started in a clean state.

Next, record the first 7 characters of the commit SHA.

Suppose the file is path/to/file, and you want to restore the file to its state before the commit with SHA 1234567.
The command is:

git restore --source=1234567^ path/to/file

In your case, path/to/file is Sprint-2. Since Sprint-2 is a folder, the restore would apply to all files in Sprint-2. You may want to backup the files in Sprint-2 folder first if you still need them later.

After the file is restored, make a commit and push the changes to GitHub.

github-actions · 2026-06-24T20:38:53Z

Your PR couldn't be matched to an assignment in this module.

Please check its title is in the correct format, and that you only have one PR per assignment.

If this PR is not coursework, please add the NotCoursework label (and message on Slack in #cyf-curriculum or it will probably not be noticed).

If this PR needs reviewed, please add the 'Needs Review' label to this PR after you have resolved the issues listed above.

cjyuan · 2026-06-24T23:02:48Z

Did you restore the file content by copying-pasting the code?

Different editors on different operating systems may format the last line differently. The safest way to restore the files are either through git restore or copy/paste the whole files.

… value a number data type

…value to cardNumberString

github-actions · 2026-06-25T16:53:48Z

Your PR couldn't be matched to an assignment in this module.

Please check its title is in the correct format, and that you only have one PR per assignment.

If this PR is not coursework, please add the NotCoursework label (and message on Slack in #cyf-curriculum or it will probably not be noticed).

If this PR needs reviewed, please add the 'Needs Review' label to this PR after you have resolved the issues listed above.

Tobias-Amaechina added 30 commits June 18, 2026 17:37

add a comment to answer the question for sprint1

6626e33

using Template literal concept

268fe9a

adding the quotation inside the backtick

a55b982

Using slice function to add arrays of string from first to the last s…

466a1ad

…lash index

using lastIndesOf to locate last dot in arrays and assign it to lasdo…

90d852d

…t variable

using slice method to add the extention of filename to the ext variable

ac380be

using console method to log the details of dir and ext

be73fdd

breaking done what Math.random method is doing

ad02c56

explaing what the (maximum -minimum +1 ) is doing with respect to the…

fef3716

… given values

explain what step 3 is doing with respect to Math.random()*(maximum-…

0589943

…minimum +1)

Explains what step 4 math.floor (..) was doing

df3dd3b

Explained what the entire expression on the right hand side was doing

ae416a6

step 5 explains what num stands for

5267ace

used multiple comment syntax to coment out the strings

599cfbd

declaring a variable with Const key word doesn't allow reassigning s…

59a1f60

…o I used let keyword to declare the variable

the Varible was being access from the TDZ

1f1249d

the varible has been hoisted and initialled before accessing

9dad574

commenting out the first code to avoid SyntaxError

94df850

I predicted that it wouldn't work as slice method is used on a numbe…

26c75aa

…r instead of string

I printed the type of data type variable cardNumber is on the console…

7a6e15e

… and it reads number, I have to comment out slice method line of code

commenting out the console.log(typeof cardNumber) before running the…

e8a084e

… original code to see that error message says TypeError: cardNumber.slice is not a function

fixing the error my converting the number to string by putting doubl…

536afc3

…e quotes around the numbers and printing last4Digits

Identifier cannot start with a number,must start with a leter , _ or …

aec02fc

…$ so the the first varible was name was updated to start with doller sign

the second varible was updated to start with underscore

224b857

added the missing comma to correct the error

fab2124

answered question on Variable reasignment lines

0183466

answered queation about variable declration

69966b3

Answerd the question e about what the expression is doing

9a0c788

Answered question on how many variable delaration are in the file

cb291d0

Answered question on how many function calls are in the program

0eada55

Tobias-Amaechina added the Module-Structuring-And-Testing-Data The name of the module. label Jun 21, 2026

cjyuan reviewed Jun 23, 2026

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Tobias-Amaechina added 6 commits June 25, 2026 17:28

Removed the double quote on the variable cardNuber value to make the…

e8730e3

… value a number data type

used .toString to cast the nuber date type to string and assign the …

cd37090

…value to cardNumberString

used .slice to extrat the last 4 digits from the cardNumberString

28eeec9

used the correct javascript naming convention for the first variable

7ad3955

used best practices naming convention to rename the second variable

76151fd

gave the right programming term for the term that belongs in the blank

a96b47e

Tobias-Amaechina force-pushed the coursework branch from 6615f0e to a96b47e Compare June 25, 2026 16:51

Tobias-Amaechina added the Needs Review Trainee to add when requesting review. PRs without this label will not be reviewed. label Jun 25, 2026

github-actions Bot removed the Needs Review Trainee to add when requesting review. PRs without this label will not be reviewed. label Jun 25, 2026

		@@ -1,9 +1,17 @@
		const cardNumber = 4533787178994213;
		const cardNumber = "4533787178994213";

		const $12HourClockTime = "8:53pm";
		const _hourClockTime = "20:53"; No newline at end of file

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Tobias-Amaechina commented Jun 21, 2026

Learners, PR Template

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Tobias-Amaechina commented Jun 24, 2026

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cjyuan commented Jun 24, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Reverting Changes

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cjyuan commented Jun 24, 2026

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cjyuan commented Jun 24, 2026 •

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