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WM4-Kavita-Patil-JavaScript-Core-1-Coursework-Week4 #335
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| console.log("Hello world"); | ||
| console.log("Hello World. I just started learning JavaScript!"); | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,5 @@ | ||
| // Start by creating a variable `greeting` | ||
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| var greeting = "Hello world"; | ||
| console.log(greeting); | ||
| console.log(greeting); | ||
| console.log(greeting); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,5 @@ | ||
| // Start by creating a variable `message` | ||
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| var message = "This is a string"; | ||
| var messageType = typeof message; | ||
| console.log(message); | ||
| console.log(messageType); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,8 @@ | ||
| // Start by creating a variable `message` | ||
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| console.log(message); | ||
| var greetingStart = "Hello, my name is "; | ||
| var name1 = "Kavita"; | ||
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| var greeting = greetingStart + name1; | ||
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| console.log(greeting); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,12 @@ | ||
| // Start by creating a variable `message` | ||
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| console.log(message); | ||
| var greetingStart = "My name is "; | ||
| var name1 = "Daniel "; | ||
| var greetingMiddle = "and my name is "; | ||
| var nameLength = name1.length; | ||
| var greetingEnd = " characters long."; | ||
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| var greeting = greetingStart + name1 + greetingMiddle + nameLength + greetingEnd; | ||
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| console.log(greeting); "" |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,10 @@ | ||
| const name = " Daniel "; | ||
| var greetingStart = " My name is "; | ||
| var name1 = "Daniel "; | ||
| var greetingMiddle = "and my name is "; | ||
| var nameLength = name1.length; | ||
| var greetingEnd = " characters long. "; | ||
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| console.log(message); | ||
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| var greeting = greetingStart + name1 + greetingMiddle + nameLength + greetingEnd; | ||
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| console.log(greeting.trim()); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,7 @@ | ||
| // Start by creating a variables `numberOfStudents` and `numberOfMentors` | ||
| const numberOfMentors = 8 | ||
| const numberOfStudents = 15 | ||
| const total = numberOfStudents + numberOfMentors | ||
| console.log(`Number of students: ${numberOfStudents}`); | ||
| console.log(`Number of mentors: ${numberOfMentors}`); | ||
| console.log(`Total number of students and mentors: ${total}`) |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,8 @@ | ||
| var numberOfStudents = 15; | ||
| var numberOfMentors = 8; | ||
| var numberOfStudents = 100; | ||
| var numberOfMentors = 80; | ||
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| var numberOfMentorsToday = .65 * 100; | ||
| console.log(numberOfMentorsToday); | ||
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| var numberOfStudents = .35 * 100; | ||
| console.log(numberOfStudents); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,8 @@ | ||
| function halve(number) { | ||
| // complete the function here | ||
| return number / 2; | ||
| } | ||
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| var result = halve(12); | ||
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| console.log(result); | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,6 @@ | ||
| function triple(number) { | ||
| // complete function here | ||
| return number * 3; | ||
| } | ||
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| var result = triple(12); | ||
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| console.log(result); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,12 @@ | ||
| // Complete the function so that it takes input parameters | ||
| function multiply() { | ||
| function multiply(num1, num2) { | ||
| // Calculate the result of the function and return it | ||
| return num1 * num2; | ||
| } | ||
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| // Assign the result of calling the function the variable `result` | ||
| var result = multiply(3, 4); | ||
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| console.log(result); | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,7 @@ | ||
| // Declare your function first | ||
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| function divide(num1, num2) { | ||
| return num1 / num2; | ||
| } | ||
| var result = divide(3, 4); | ||
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| console.log(result); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,7 @@ | ||
| // Declare your function first | ||
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| // Call the function and assign to a variable `sum` | ||
| function add(num1, num2) { | ||
| return num1 + num2; | ||
| } | ||
| var sum = add(13, 124); | ||
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| console.log(sum); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,20 @@ | ||
| function mentorName(name) { | ||
| return name.toUpperCase(); | ||
| } | ||
| function greeting(name) { | ||
| var name = mentorName(name); | ||
| var message = `HELLO ${name}`; | ||
| return message; | ||
| } | ||
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| var mentor1 = "Daniel"; | ||
| var mentor2 = "Irina"; | ||
| var mentor3 = "Mimi"; | ||
| var mentor4 = "Rob"; | ||
| var mentor5 = "Yohannes"; | ||
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| console.log(greeting(mentor1)); | ||
| console.log(greeting(mentor2)); | ||
| console.log(greeting(mentor3)); | ||
| console.log(greeting(mentor4)); | ||
| console.log(greeting(mentor5)); |
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,16 +1,17 @@ | ||
| // There are syntax errors in this code - can you fix it to pass the tests? | ||
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| function addNumbers(a b c) { | ||
| function addNumbers(a, b, c) { | ||
| return a + b + c; | ||
| } | ||
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| function introduceMe(name, age) | ||
| return "Hello, my name is " + name "and I am " age + "years old"; | ||
| function introduceMe(name, age) { | ||
| return "Hello, my name is " + name + " and I am " + age + " years old"; | ||
| } | ||
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| function getTotal(a, b) { | ||
| total = a ++ b; | ||
| total = a + b; | ||
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| return "The total is total"; | ||
| return `The total is ${total}`; | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Nice use of string interpolation! |
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| } | ||
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| /* | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,16 +1,20 @@ | ||
| // Add comments to explain what this function does. You're meant to use Google! | ||
| function getRandomNumber() { | ||
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| //returns a random number between 0 (included) and 1 (excluded) and multiple by 10: | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Do you know what kind of random number? Integer? Decimal? Negative or positive?
Author
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. It always returns a number lower than 1. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Could it return -100? Or 0.56? |
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| return Math.random() * 10; | ||
| } | ||
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| // Add comments to explain what this function does. You're meant to use Google! | ||
| function combine2Words(word1, word2) { | ||
| //method joins two or more strings. | ||
| return word1.concat(word2); | ||
| } | ||
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| function concatenate(firstWord, secondWord, thirdWord) { | ||
| // Write the body of this function to concatenate three words together. | ||
| // Look at the test case below to understand what this function is expected to return. | ||
| return firstWord.concat(" ", secondWord, " ", thirdWord); | ||
| } | ||
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| /* | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -5,7 +5,10 @@ | |
| Sales tax is 20% of the price of the product. | ||
| */ | ||
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| function calculateSalesTax() {} | ||
| function calculateSalesTax(price) { | ||
| var salesTax = price + price * .20; | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This confused me to begin with as to why you were multiplying the price by 0.2. One of the reasons is that I have no idea what the significance of that number is. In the industry we'd refer to this as a "magic number". It's considered better to treat it as a named constant defined somewhere in your code. Some people/organisations will capitalize shared constants, something like:
Author
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. oh, ok thanks |
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| return salesTax; | ||
| } | ||
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| /* | ||
| CURRENCY FORMATTING | ||
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@@ -17,7 +20,11 @@ function calculateSalesTax() {} | |
| Remember that the prices must include the sales tax (hint: you already wrote a function for this!) | ||
| */ | ||
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| function addTaxAndFormatCurrency() {} | ||
| function addTaxAndFormatCurrency(price) { | ||
| var total = calculateSalesTax(price); | ||
| var roundTotal = total.toFixed(2); | ||
| return `£${roundTotal}`; | ||
| } | ||
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| /* | ||
| =================================================== | ||
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Do you remember what we need to put at the start of the line when defining or creating a new variable?
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I need to add var or let