goit js hw 01

Reception criteria

• goit-js-hw-01 repository was created
• When handing out homework, there are references to the source files in the repository
• Each task is made in a separate file with the name task-номер_завдання.js Use <script type="module"> to close the task code in a separate scope and avoid conflicts of identifier names.
• The names of the variables are clear, descriptive
• The code is formatted with prettier

Task 1

• Announce two variables that retain the name and price of the product: name and price
• Recover the following product characteristics (immediately upon announcement)
  • Title: Protective Field Generator
  • Price: 1000
• Using the standard line of output to the console information about the product will turn out: 'Обрано «Генератор захисного поля», ціна за штуку 1000 кредитів' .
• Drawing a product new price - 2000
• Using the standard line of output to the console information about the product, it will turn out: 'Обрано «Генератор захисного поля», ціна за штуку 2000 кредитів' .

Task 2

Write a script for checking the quantity of goods in the warehouse. There are variables total (the number of goods in stock) and ordered (units of goods in order).

Compare these values ​​and the results of the output:

• If the order indicates a number exceeding the number of goods in the warehouse, then bring out the message "На складі недостатньо товарів!" .
• Otherwise, output the message "Замовлення оформлено, з вами зв'яжеться менеджер" .

Check the performance of the code with different values ​​of variable ordered , such as 20 , 80 and 130 .

 const total = 100 ;
const ordered = 50 ;

Task 3

Write a script that simulates the administrator's authorization in the control panel.

There is a variable message in which the result message will be recorded. When you download the page from the visitor, the password is requested through prompt :

• If you click Cancel , write down in message a line 'Скасовано користувачем!'
• Otherwise, if the password entered that matches the value of ADMIN_PASSWORD constant, write down in message line 'Ласкаво просимо!'
• Otherwise, that is, if none of the previous conditions is fulfilled, write down the line 'access to message 'Доступ заборонений, невірний пароль!'
• After all checks, display the message variable value in alert .

 const ADMIN_PASSWORD = "jqueryismyjam" ;
let message ;

Task 4

The user's account has 23580 loans, the value is stored in credits variable (creation and appropriation). The user decides to buy repair droid, which cost 3000 credits apiece. The price of one droid is stored in the variable pricePerDroid .

When visiting the page using prompt , you need to ask the number of droids that the user wants to buy and keep in the variable.

Write a script which one:

• If the Cancel button was pressed in prompt , the message is displayed in the 'Скасовано користувачем!' .
• Otherwise, it calculates the total order price and stores in totalPrice variable.
• Checks whether the user can pay the order:
  • If the amount before payment exceeds the number of credits in the account, get the message to the console 'Недостатньо коштів на рахунку!' .
  • Otherwise, you need to calculate the balance of credit on the account and display the message 'Ви купили [число] дроїдів, на рахунку залишилося [число] кредитів.' .

Task 5

The user can arrange the delivery of the goods to his country by specifying it when you visit the page in prompt . Keep in, the user can enter the country's name not only lower -case letters, but for 'кИтАЙ' .

Write a script that outputs the shipping value to the country. Be sure to use switch . Message format: 'Доставка в [країна] буде коштувати [ціна] кредитів' .

But delivery is not everywhere, if the country is not in the list, then delete in alert Message 'У вашій країні доставка недоступна' .

Below is a list of countries and shipping costs.

• China is 100 credits
• Chile - 250 credits
• Australia - 170 credits
• India is 80 credits
• Jamaica - 120 credits

Task 6

Write a script that asks the visitor to enter the number in prompt until the visitor presses Cancel and each time adds the value you entered to the total amount.

• When downloading a page, the user is offered to enter a number in prompt . Introduction is added to the value of the total variable.
• The input operation of the number lasts until the user presses the Cancel button in prompt .
• Once the user has stopped entering the Cancel button, show alert with the line 'Загальна сума чисел дорівнює [сума]' .

? There is no need to check that the user has introduced the number rather than an arbitrary set of characters. If you want, in the case of incorrect input, show alert with the text 'Було написано не число, спробуйте ще раз' , while the result of prompt is not necessary to the total amount, after which the user is offered to enter the number in Prompt.

 let input ;
let total = 0 ;