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12 changes: 6 additions & 6 deletions mandatory/1-syntax-errors.js
Original file line number Diff line number Diff line change
@@ -1,16 +1,16 @@
// There are syntax errors in this code - can you fix it to pass the tests?

function addNumbers(a b c) {
function addNumbers(a ,b ,c) {
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are you using prettier formatter to format your code on save? I recommend it, as it will fix issues like this where the space should be after the comma not before

return a + b + c;
}

function introduceMe(name, age)
return `Hello, my {name}` is "and I am $age years old`;

function introduceMe(name, age) {
return `Hello, my name is ${name} and I am ${age} years old`;
}
function getTotal(a, b) {
total = a ++ b;
let total = a + b;

return "The total is total";
return `The total is ${total}`;
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Great use of interpolation

}

/*
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9 changes: 5 additions & 4 deletions mandatory/2-logic-error.js
Original file line number Diff line number Diff line change
@@ -1,16 +1,17 @@
// The syntax for these functions is valid but there are some errors, find them and fix them

function trimWord(word) {
return wordtrim();
return word.trim();
}

function getStringLength(word) {
return "word".length();
let length = word.length
return length;
}

function multiply(a, b, c) {
a * b * c;
return;
let m = a*b*c;
return m;
}

/*
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5 changes: 3 additions & 2 deletions mandatory/3-function-output.js
Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
// Add comments to explain what this function does. You're meant to use Google!
// It generates a random number using Math.random() and it multiplies by 10
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Math.random() returns a number greater than or equal to 0 and less than 1, so this returns a number greater than or equal to 0 and less than 10

function getRandomNumber() {
return Math.random() * 10;
}

// Add comments to explain what this function does. You're meant to use Google!
// the concat() method is used to merge two or more arrays.
function combine2Words(word1, word2) {
return word1.concat(word2);
}

function concatenate(firstWord, secondWord, thirdWord) {
return firstWord.concat(" ", secondWord.concat(" ", thirdWord));
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@ewintram ewintram Mar 4, 2023

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you can also add all arguments into the .concat() method call, e.g.

return firstWord.concat(" ", 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.
}
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10 changes: 8 additions & 2 deletions mandatory/4-tax.js
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,10 @@
Sales tax is 20% of the price of the product.
*/

function calculateSalesTax() {}
function calculateSalesTax(number) {
let priceOfProduct = number * 1.2;
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you could use a variable name for the number 1.2 so it's more meaningful, e.g.

const totalPlusTax = 1.2;
let priceOfProduct = number * totalPlusTax;
return priceOfProduct;

return priceOfProduct;
}

/*
CURRENCY FORMATTING
Expand All @@ -17,7 +20,10 @@ function calculateSalesTax() {}
Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
*/

function addTaxAndFormatCurrency() {}
function addTaxAndFormatCurrency(pound) {
pound = calculateSalesTax(pound);
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It's better practice to declare a new variable, rather than reassign the value of a parameter, e.g.

const priceWithTax = calculateSalesTax(pound);

return `£${pound.toFixed(2)}`;
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👍 very nice use of .toFixed() and string interpolation

}

/*
===================================================
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