What will this code display on the screen?

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The main difference between pseudo-classes and pseudo-elements is how they affect elements and their states.

Pseudoclasses
Pseudoelements
Work with the state and position of existing elements.
Work with virtual parts of elements that are not in the HTML code.
They are used during user interaction.
Allows you to style specific parts of an element.
They don't add new content, they just change the style of the element.
Create new virtual elements that can be styled.
Single colon syntax.
Double colon syntax.
The general syntax of pseudo-classes looks like this:

selector :pseudo-class {
property : value;
}
Basic pseudo-classes:

:hover - Applies to an element when the mouse cursor hovers over it.
:focus - Activated when the element receives focus.
:active — applied to an element when it is clicked.
:nth-child() — allows you to select an element based on its position among other child elements.
:first-child and :last-child - apply to the first or last child element.
:checked - applies to form elements that are checked (e.g. checkboxes).

A video explaining the basic CSS pseudo-classes and pseudo-elements.
Useful links
CSS pseudo-elements are an important tool for web developers, helping to improve the appearance of web pages by adding styles and content to elements without having to change the HTML code. However, you need to take into account the peculiarities of browsers and check pseudo-elements for compatibility.

It is also important to understand the differences between pseudo-elements and pseudo-classes. Pseudo-classes focus on the state of existing elements, while pseudo-elements allow you to create virtual parts of elements and add content.

Test tasks in programming: 15 typical questions and tasks

And 5 platforms where you can practice solving algorithmic problems

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November 21, 2024

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Test tasks in programming: 15 typical questions and tasks
Content

1.
Examples of test tasks for beginners
2.
Platforms with programming tasks
3.
Interview Tips for Newbies
4.
Useful articles on the topic
Daria Lebedeva
Daria Lebedeva
Author of Skillfactory, translates from IT language into human language

Programming is an applied field where success comes through practice. The more problems you solve, the more confident you become in the profession. This is especially important not only for professional growth, but also for successfully passing interviews and completing test tasks. Many companies include programming tasks in the selection process to assess the candidate's skill level.

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In this article, we will tell you what questions and tasks you may georgia telegram data encounter when applying for a job.

Examples of test tasks for beginners
Let's list examples of tasks and questions for beginner programmers that may be encountered during interviews and test assignments.

function b ( x, y, a ) {
arguments [ 2 ] = 10 ;
alert ( a ) ;
}
b ( 1 , 2 , 3 ) ;
Answer: The value is 10. The function b contains three arguments, their indices start with [0]. It turns out that the argument with the index [2] is the function a. In the first line of the function, the third argument is assigned the value 10.