fix: content change in Javascript #318

Javascript content changed in chapter 6, 7 and 8

courses/javascript/arithmetic-operators.md

@@ -32,20 +32,20 @@ testCase: [
 		]
 ---
 
-We know many operators from school. They are things like addition +, multiplication \*, subtraction -, and so on.
+We know many operators from school. They are things like addition `+`, multiplication `*`, subtraction `-`, and so on.
 
 In this chapter, we’ll start with simple operators, then concentrate on JavaScript-specific aspects, not covered by school arithmetic.
 
 The following math operations are supported:
 
-- Addition +,
-- Subtraction -,
-- Multiplication \*,
-- Division /,
-- Remainder %,
-- Exponentiation \*\*.
+- Addition `+`,
+- Subtraction `-`,
+- Multiplication `*`,
+- Division `/`,
+- Remainder `%`,
+- Exponentiation `**`.
 
-The first four are straightforward, while % and \*\* need a few words about them.
+The first four are straightforward, while `%` and `**` need a few words about them.
 
 ---
 
@@ -98,7 +98,7 @@ console.log(a / b); //2
 
 ## Exponentiation \*\*
 
-The exponentiation operator a \*\* b raises a to the power of b.
+The exponentiation operator `a ** b` raises a to the power of b.
 
 In school maths, we write that as a^b .
 
@@ -108,9 +108,9 @@ console.log(2 ** 2); // 2² = 4
 
 ## Remainder %
 
-The remainder operator %, despite its appearance, is not related to percents.
+The remainder operator `%`, despite its appearance, is not related to percents.
 
-The result of a % b is the remainder of the integer division of a by b.
+The result of `a % b` is the remainder of the integer division of a by b.
 
 ```javascript
 console.log(5 % 2); // 1, a remainder of 5 divided by 2
@@ -120,10 +120,10 @@ console.log(5 % 2); // 1, a remainder of 5 divided by 2
 
 ## Complete the tasks below:
 
-- Create two variables a and b and assign values 5 and 2 respectively.
+- Create two variables `a` and `b` and assign values 5 and 2 respectively.
 
-- Perform an addition(+) operation on a and b and assign the value to a variable result.
+- Perform an addition operation on `a` and `b` and assign the value to a variable `result`.
 
-- Perform a multiplication(\*) operation on a and b and assign the value to a variable result.
+- Perform a multiplication operation on `a` and `b` and assign the value to a variable `result`.
 
-- Perform an modulus(%) operation on a and b and assign the value to a variable result.
+- Perform a modulus operation on `a` and `b` and assign the value to a variable `result`.

courses/javascript/if-condition.md

@@ -32,17 +32,17 @@ testCase: [
 		]
 ---
 
-The if(...) statement evaluates a condition in parentheses and, if the result is true, executes a block of code.
+The `if(...)` statement evaluates a condition in parentheses and, if the result is `true`, executes a block of code.
 
 ```javascript
 if (year == 2021) {
   console.log("That's correct!");
 }
 ```
 
-## The else clause
+## The `else` clause
 
-The if statement may contain an optional “else” block. It executes when the condition is falsy.
+The `if` statement may contain an optional `else` block. It executes when the condition is falsy.
 
 ```javascript
 if (year == 2021) {
@@ -56,10 +56,10 @@ if (year == 2021) {
 
 ## Complete the tasks below:
 
-- Create a variable "a" of type let with value 5
+- Create a variable `a` of type let with value 5
 
-- Check whether a equals 5
+- Check whether `a` equals 5
 
-- If a equals 5, print true in console
+- If `a` equals 5, print `true` in console
 
 - Use closing curly braces

courses/javascript/switch-statement.md

@@ -88,9 +88,9 @@ switch(x) {
 }
 ```
 
-- The value of x is checked for a strict equality to the value from the first case (that is, value1) then to the second (value2) and so on.
-- If the equality is found, switch starts to execute the code starting from the corresponding case, until the nearest break (or until the end of switch).
-- If no case is matched then the default code is executed (if it exists).
+- The value of `x` is checked for a strict equality to the value from the first case (that is, "value1") then to the second ("value2") and so on.
+- If the equality is found, `switch` starts to execute the code starting from the corresponding case, until the nearest `break` (or until the end of `switch`).
+- If no `case` is matched then the `default` code is executed (if it exists).
 
 ### Example