Kiểm tra kỹ năng: Toán học

// ...
// Don't edit the code above here!

const number1 = 4;
const number2 = 8;
const number3 = 12;
const number4 = 8;

const additionResult = number1 + number2;
const subtractionResult = number3 - number4;

finalResult = additionResult * subtractionResult;

evenOddResult = finalResult % 2;

// Don't edit the code below here!
// ...

let finalResult;
let evenOddResult;

const number1 = 4;
const number2 = 8;
const number3 = 12;
const number4 = 8;

const additionResult = number1 + number2;
const subtractionResult = number3 - number4;

finalResult = additionResult * subtractionResult;

evenOddResult = finalResult % 2;

const section = document.querySelector("section");
const para1 = document.createElement("p");
const finalResultCheck =
  finalResult === 48 ? `Yes, well done!` : `No, it is ${finalResult}`;
para1.textContent = `Is the finalResult 48? ${finalResultCheck}`;
const para2 = document.createElement("p");
const evenOddResultCheck =
  evenOddResult === 0
    ? "The final result is even!"
    : "The final result is odd. Hrm.";
para2.textContent = evenOddResultCheck;
section.appendChild(para1);
section.appendChild(para2);

// Final result should be 4633.33

let result = (7 + 13 / 9) + 7;
let result2 = 100 / 2 * 6;

result *= result2;

const finalResult = result.toFixed(2);

const finalNumber = Number(finalResult);

// Don't edit the code below here!
// ...

let result = 7 + 13 / 9 + 7;
let result2 = (100 / 2) * 6;

result *= result2;
const finalResult = result.toFixed(2);
const finalNumber = Number(finalResult);

const section = document.querySelector("section");
const para1 = document.createElement("p");
para1.textContent = `Your finalResult is ${finalResult}`;
const para2 = document.createElement("p");
const finalNumberCheck =
  isNaN(finalNumber) === false
    ? "finalNumber is a number type. Well done!"
    : `Oops! finalNumber is not a number.`;
para2.textContent = finalNumberCheck;
section.appendChild(para1);
section.appendChild(para2);

// ...
// Don't edit the code above here!

const weightComparison = eleWeight < mouseWeight;
const heightComparison = ostrichHeight > duckHeight;
const pwdMatch = pwd1 === pwd2;

// Don't edit the code below here!
// ...

// Statement 1: The elephant weighs less than the mouse
const eleWeight = 1000;
const mouseWeight = 2;
// Statement 2: The Ostrich is taller than the duck
const ostrichHeight = 2;
const duckHeight = 0.3;
// Statement 3: The two passwords match
const pwd1 = "stromboli";
const pwd2 = "stROmBoLi";

const weightComparison = eleWeight < mouseWeight;
const heightComparison = ostrichHeight > duckHeight;
const pwdMatch = pwd1 === pwd2;

const section = document.querySelector("section");
const para1 = document.createElement("p");
const para2 = document.createElement("p");
const para3 = document.createElement("p");
const weightTest = weightComparison
  ? "True — elephants do weigh less than mice!?"
  : "False — of course an elephant is heavier than a mouse!";
const heightTest = heightComparison
  ? "True — an ostrich is indeed taller than a duck!"
  : "False — apparently a duck is taller than an ostrich!?";
const pwdTest = pwdMatch
  ? "True — the passwords match."
  : "False — the passwords do not match; please check them";
para1.textContent = weightTest;
section.appendChild(para1);
para2.textContent = heightTest;
section.appendChild(para2);
para3.textContent = pwdTest;
section.appendChild(para3);