Task 1.
What will be the value and data type of this expression?
'$' + 1 + 2
Task 2.
What will be the value and data type of this expression?
'10px' - '1px'
Task 3.
What will be the value and data type of this expression?
'10' - '2'
Task 4.
Create an h2 element and a button. When the button is clicked, display the result of the expression "10 + 20" inside the h2. The expected result is "30".
Task 5.
Create a button and a select with options "red" and "green" (the option text must match the values). When a color is selected, update the button’s color accordingly.
Task 6.
Create three inputs with type="number" and a button. When the button is clicked, log the average of the three numbers to the console. Formula: (inp1 + inp2 + inp3) / 3
Task 7.
Create an input with type="number" for monthly income and a select with options: 1, 3, 6, 9, 12 months. The user enters their monthly income and selects the number of months. When the button is clicked, calculate the total income for the selected period and display the result in a div.