From 3422928ffd6a207794271988fd4c19e534615732 Mon Sep 17 00:00:00 2001 From: Francesco Romano Monda Date: Tue, 23 Jun 2026 14:14:05 +0100 Subject: [PATCH 1/4] Add explanation of line 3 and = operator in 1-count.js --- Sprint-1/1-key-exercises/1-count.js | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js index 117bcb2b6e..1d10bd1fc8 100644 --- a/Sprint-1/1-key-exercises/1-count.js +++ b/Sprint-1/1-key-exercises/1-count.js @@ -4,3 +4,5 @@ count = count + 1; // Line 1 is a variable declaration, creating the count variable with an initial value of 0 // Describe what line 3 is doing, in particular focus on what = is doing +// Line 3 updates the variable count by taking its current value, adding 1 to it, and then assigning the new value back to count +// The = sign assigns the value on the right to the variable on the left From 59ef42a5aedc588ba8f2fa3169a290b7de260845 Mon Sep 17 00:00:00 2001 From: Francesco Romano Monda Date: Tue, 23 Jun 2026 14:40:59 +0100 Subject: [PATCH 2/4] Fix initials variable construction in initials.js --- Sprint-1/1-key-exercises/2-initials.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 47561f6175..202c67880c 100644 --- a/Sprint-1/1-key-exercises/2-initials.js +++ b/Sprint-1/1-key-exercises/2-initials.js @@ -5,7 +5,7 @@ let lastName = "Johnson"; // Declare a variable called initials that stores the first character of each string. // 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.charAt(0) + middleName.charAt(0) + lastName.charAt(0); // https://www.google.com/search?q=get+first+character+of+string+mdn From 7d050929de2ea32ec173bda37501de7e3a920ef5 Mon Sep 17 00:00:00 2001 From: Francesco Romano Monda Date: Tue, 23 Jun 2026 15:32:56 +0100 Subject: [PATCH 3/4] Add dir and ext variables in path.js --- Sprint-1/1-key-exercises/2-initials.js | 1 - Sprint-1/1-key-exercises/3-paths.js | 7 ++++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js index 202c67880c..b252e8617e 100644 --- a/Sprint-1/1-key-exercises/2-initials.js +++ b/Sprint-1/1-key-exercises/2-initials.js @@ -8,4 +8,3 @@ let lastName = "Johnson"; let initials = firstName.charAt(0) + middleName.charAt(0) + lastName.charAt(0); // https://www.google.com/search?q=get+first+character+of+string+mdn - diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js index ab90ebb28e..a835e823d5 100644 --- a/Sprint-1/1-key-exercises/3-paths.js +++ b/Sprint-1/1-key-exercises/3-paths.js @@ -17,7 +17,8 @@ console.log(`The base part of ${filePath} is ${base}`); // Create a variable to store the dir part of the filePath variable // Create a variable to store the ext part of the variable -const dir = ; -const ext = ; +const dir = filePath.slice(0, lastSlashIndex); +const lastDotIndex = filePath.lastIndexOf("."); +const ext = filePath.slice(lastDotIndex); -// https://www.google.com/search?q=slice+mdn \ No newline at end of file +// https://www.google.com/search?q=slice+mdn From c78c84009b1b891a48f90a158db305cd684e93fd Mon Sep 17 00:00:00 2001 From: Francesco Romano Monda Date: Tue, 23 Jun 2026 15:51:12 +0100 Subject: [PATCH 4/4] Document how Math.random expression generates a number between 1 and 100 --- Sprint-1/1-key-exercises/4-random.js | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js index 292f83aabb..5dbc52298a 100644 --- a/Sprint-1/1-key-exercises/4-random.js +++ b/Sprint-1/1-key-exercises/4-random.js @@ -3,7 +3,12 @@ const maximum = 100; const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum; -// In this exercise, you will need to work out what num represents? +// In this exercise, you will need to work out what num represents // Try breaking down the expression and using documentation to explain what it means // It will help to think about the order in which expressions are evaluated // Try logging the value of num and running the program several times to build an idea of what the program is doing + +// Math.random() gives a random decimal number between 0 and 1 +// Math.random() * (maximum - minimum + 1) gives a random decimal number between 0 and 100 +// Math.floor() removes the decimal part, giving a whole number between 0 and 99 +// + minimum shifts the range up so the final result is between 1 and 100