practicing

Author: pathywang

Sprint-1/1-key-exercises/1-count.js

@@ -2,9 +2,9 @@ let count = 0;
 
 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 what=
-Line one shows the initial value is 0 as a variable Declaration,
-Line 3  on the right-hand side count + 1 is evaluated first which means the current value 0 adds 1, giving 1
-The left-hand side count= means: Assign the result of right-hand side 1 back into the variable
-count. So after this runs the output should be 1.
+
+//Line 3  on the right-hand side count + 1 is evaluated first which means the current value 0 adds 1, giving 1
+//= means: Assign the result of right-hand side 1 back into the variable, named count. So after line 3, output should be 1

Sprint-1/1-key-exercises/3-paths.js

@@ -11,16 +11,14 @@
 
 const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
 const lastSlashIndex = filePath.lastIndexOf("/");
-const base = filePath.slice(lastSlashIndex + 1);
+const base = filePath.slice(lastSlashIndex + 1)
 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
 // Get everthing before base
-const dir = filePath.slice(0,lastSlashIndex);
-
 //Get everything after the last dot in the base:
-const lastDotIndex = base.lastIndexOf(".");
+const dir = filePath.slice(0,lastSlashIndex+1);
 const ext = base.slice(-3);
 
 console.log(`The dir part of ${filePath} is ${dir}`);

Sprint-1/1-key-exercises/4-random.js

@@ -3,14 +3,15 @@ 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?
 // Try breaking down the expression and using documentation to explain what it mean
 // 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 doingnum reprents the number is  randomly generated whole number betweeb 1 and 100,inclusive
-Math.random() returns a random decimal between 0(inclusive) and 1(exclusive). while maximum-minimum +1=100, Math.random()*(maximum-minimum+1)
-range is between 0 and 99.99999
-Due to that Math.floor(...) rounds down the decimal to the nearest whole number.From this Stage, we have interger between o and 99.
-After + minimum, the range is between 1 and 100.
-This is classcial expressions for generating a random interger between two values- between 1 and 100, inclusive in this function.
-This kind of expression is commonly used for things like: rolling dice,random quiz questions, game mechanics.
+// Try logging the value of num and running the program several times to build an idea of what the program is doingnum reprents the number is  randomly generated whole number betweeb 1 and 100,inclusive range is between 0 and 99.99999
+
+//Math.random() returns a random decimal between 0(inclusive) and 1(exclusive). while maximum-minimum +1=100, Math.random()*(maximum-minimum+1)
+
+//Due to that Math.floor(...) rounds down the decimal to the nearest whole number.From this Stage, we have interger between o and 99.After + minimum, the range is between 1 and 100.
+//This is classcial expressions for generating a random integer between two values- between 1 and 100, inclusive in this function.
+//This kind of expression is commonly used for things like: rolling dice,random quiz questions, game mechanics.

Sprint-1/2-mandatory-errors/2.js

@@ -1,5 +1,7 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
+
+//my answer:
 // we should put variable declaration first then print out as JS languages rules, can not write the other way around
 
 const cityOfBirth = "Bolton";