Initial commit

js1-wk1-eval/level-100.js

@@ -6,4 +6,7 @@
 // b) 59 divided by 7 ( to 4 decimal places )
 // c) 67 plus 100
 
-// Write your answers below:
+// Write your answers below:
+// a) 560
+// b) 8.4285
+// c) 167

js1-wk1-eval/level-200.js

@@ -4,13 +4,14 @@
 // Write your answers down below:
 
 // a) 10.53   For example, Math.trunc(10.53) evaluates to 10, Math.floor(10.53) evaluates to 10
-// b) 170.105
-// c) -0.34
-// d) -8.921
+// b) 170.105 Math.trunc(170.105) evaluates to 170, Math.floor(170.105) evaluates to 170
+// c) -0.34 Math.trunc(-0.34) evaluates to 0, Math.floor(-0.34) evaluates to -1
+// d) -8.921 Math.trunc(-8.921) evaluates to -8, Math.floor(-8.921) evaluates to -9
 
 // Part 2: Use the Node REPL to check your answers to Part 1)
 // Part 3: Using Part 2, explain the difference between Math.trunc() and Math.floor() in your own words
-
+// Math.trunc() cuts off everything after the decimal — it just removes the fractional part.
+// Math.floor() always rounds down to the nearest whole number — even if the number is negative.
 
 
 

js1-wk1-eval/level-300.js

@@ -8,5 +8,7 @@ const time = "21:49";
 const macTimeDisplay = `${day.slice(0,3)} ${date} ${month.slice(0,3)} ${time}`;
 
 // Before running code, answer the following - write down your answers:
-// a) how many function calls are there in this file?
-// b) predict and explain what macTimeDisplay will evaluate to. You can use documentation to look up slice
+// a) how many function calls are there in this file? (2)
+// b) predict and explain what macTimeDisplay will evaluate to. You can use documentation to look up slice 
+// a) 2
+// b) Fri 29 Sep 21:49

js1-wk1-eval/level-400.js

@@ -7,8 +7,12 @@ const secret = "cake";
 confession = confession.replaceAll(secret,'x'.repeat(secret.length));
 
 
-// a) How many function calls are there in this file?
+// a) How many function calls are there in this file? 2
 // b) Explain what the expression confession.replaceAll(secret,'x'.repeat(secret.length)); is doing
-// c) How many inputs do we pass to replaceAll when we call it? How can you tell?
+//It finds every "cake" in the text and replaces each one with "xxxx".
+// c) How many inputs do we pass to replaceAll when we call it? How can you tell? 
+// 2 inputs to replaceAll — the word to find and the word to replace it with.
 // d) How any inputs do we pass to repeat when we call it?  How can you tell?
-// e) What kind of statement is on line 7?
+//1 input to repeat — how many times to repeat "x"
+// e) What kind of statement is on line 7?
+//It’s an assignment statement

js1-wk1-eval/level-500.js

@@ -3,5 +3,8 @@
 const avgDaysInMonth = Math.floor(365 / 12);
 
 // Without running any code,
-// Predict and explain what the value of avgDaysInMonth will evaluate to
-// You can use documentation to look up what Math.floor does
+// Predict and explain what the value of avgDaysInMonth will evaluate to 30
+// You can use documentation to look up what Math.floor does
+//Answer Because:
+//365 / 12 ≈ 30.4166 and Math.floor takes this number and cuts off everything after the decimal, rounding down.
+//So it simply becomes 30.