CSS Selectors Quiz

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Questions and Answers

What does the `input:required` selector target?

Checkboxes that are checked

All types of input elements

Inputs that have the required attribute (correct)

Inputs that are disabled

Which selector is used to select the first child element within a container?

a:only-child

a:nth-of-type(1)

a:first-child (correct)

a:last-child

What does `input:checked` select?

All input fields

Inputs that are disabled

Inputs that are required

Inputs that are checked (correct)

Which pseudo-class selects elements that are the only child of their parent?

a:only-child Signup and view all the answers

What does the universal selector (*) do in CSS?

Selects all elements on the page Signup and view all the answers

Which selector would you use to style all div elements that have the class 'c'?

div.c Signup and view all the answers

Which selector would you use to select the last anchor element in a container?

Both A and B Signup and view all the answers

What does the descendant selector (div a) select?

All anchor elements inside any div Signup and view all the answers

What does the `a:nth-child(2n)` selector select?

Every second anchor child element Signup and view all the answers

Which selector targets elements that do not match a given selector?

a:not(.c) Signup and view all the answers

Which selector is used to select elements that are direct children of a specified element?

div > a Signup and view all the answers

What does the `a:nth-last-child(3)` selector specifically select?

The third child from the end Signup and view all the answers

What does the adjacent sibling selector (div + a) accomplish?

Selects the first sibling that follows the div Signup and view all the answers

When would you use the attribute selector [a]?

To select elements that have the a attribute Signup and view all the answers

The selector `a:only-of-type` is used for what purpose?

Selects an anchor that is the only one of its type in the container Signup and view all the answers

Which of the following selectors matches elements that have an attribute 'a' with exactly the value '1'?

[a='1'] Signup and view all the answers

What does the `input:disabled` selector target?

Inputs that are disabled Signup and view all the answers

Which selector allows selecting the even-numbered child elements?

a:nth-of-type(2n) Signup and view all the answers

What is the purpose of using the begins with attribute selector [a^='1']?

To match elements where the attribute 'a' starts with '1' Signup and view all the answers

What does the pseudo class :hover select?

Elements that are being hovered by the mouse Signup and view all the answers

What does the `a:first-of-type` selector do?

Selects the first anchor of its type within a container Signup and view all the answers

What does the selector div::before do?

Creates an empty element before the div's children Signup and view all the answers

Which of the following correctly describes the `a:last-child` selector?

Selects the last anchor child in a container Signup and view all the answers

The selector `a:nth-of-type(2n)` is primarily used to select what?

Every second anchor child Signup and view all the answers

Which of these selectors would select all div elements and all anchors?

div, a Signup and view all the answers

Which selector is best for selecting elements that contain a specific substring in an attribute?

[a*='1'] Signup and view all the answers

What is the primary reason for not using IDs in CSS?

They can only select one element Signup and view all the answers

What does the general sibling selector (div ~ a) select?

All siblings of div that come after it Signup and view all the answers

What type of selector would you use to select all elements with a specific class named 'c'?

The class selector <code>.c</code> would be used. Signup and view all the answers

How does the `div > a` selector differ from `div a`?

<code>div > a</code> selects direct child elements, while <code>div a</code> selects all descendant anchor elements. Signup and view all the answers

What does the `#i` selector specifically target?

The <code>#i</code> selector targets elements with the ID 'i'. Signup and view all the answers

What is the difference between the general sibling selector `div ~ a` and the adjacent sibling selector `div + a`?

<code>div ~ a</code> selects all siblings after the div, while <code>div + a</code> only selects the immediate sibling that follows. Signup and view all the answers

Which selector would you use to select elements that have an attribute named 'a' that contains the substring '1'?

The selector would be <code>[a*='1']</code>. Signup and view all the answers

What is the purpose of the selector `div::before`?

The <code>div::before</code> selector creates an empty element before the content of the selected <code>div</code>. Signup and view all the answers

When would you use the `:hover` pseudo-class?

The <code>:hover</code> pseudo-class is used to style elements when they are hovered over with the mouse. Signup and view all the answers

What does the `div.c` selector imply?

<code>div.c</code> selects all <code>div</code> elements that have the class 'c'. Signup and view all the answers

What is the function of the exact attribute selector `[a='1']`?

The exact attribute selector <code>[a='1']</code> selects elements with the attribute 'a' that has a value of '1'. Signup and view all the answers

How does the begins with attribute selector `[a^='1']` operate?

The begins with attribute selector <code>[a^='1']</code> selects elements whose 'a' attribute value starts with '1'. Signup and view all the answers

What type of elements does the attribute selector `[a]` select?

The attribute selector <code>[a]</code> selects any elements that have the 'a' attribute. Signup and view all the answers

What is targeted by the selector `div, a`?

<code>div, a</code> targets both all <code>div</code> elements and all <code>a</code> elements. Signup and view all the answers

In what scenario would the ends with attribute selector `[a$='1']` be useful?

The ends with attribute selector <code>[a$='1']</code> is useful for selecting elements whose 'a' attribute value concludes with '1'. Signup and view all the answers

Describe the function of the `div::after` selector.

The <code>div::after</code> selector creates an empty element directly after the content of a selected <code>div</code>. Signup and view all the answers

How does the `a:only-child` selector function in CSS?

It selects an anchor element that is the only child of its parent. Signup and view all the answers

What does the `:not` pseudo-class accomplish when used with selectors?

It selects elements that do not match the specified selector. Signup and view all the answers

Describe the difference between `a:first-child` and `a:first-of-type` selectors.

The first-child selector selects an anchor if it is the first child in any context, while the first-of-type selector selects an anchor that is the first of its type within its parent. Signup and view all the answers

How do the selectors `a:nth-child(2n)` and `a:nth-of-type(2n)` differ?

The nth-child selector applies to all children of the parent, while the nth-of-type selector applies only to anchor elements of a specified type. Signup and view all the answers

What is the function of the `input:checked` selector in CSS?

It selects input elements, such as checkboxes or radio buttons, that are currently checked. Signup and view all the answers

Explain the `a:nth-last-of-type(2)` selector's purpose.

It selects the second to last anchor element of its type within its parent. Signup and view all the answers

What does the `input:required` selector target in CSS?

It targets input elements that have the required attribute, indicating that they must be filled out. Signup and view all the answers

Define the purpose of the `a:last-child` selector.

It selects the last anchor element within a parent container. Signup and view all the answers

What is meant by the term 'pseudo-class' in CSS?

A pseudo-class is a keyword added to selectors that specifies a special state of the selected elements. Signup and view all the answers

How does `input:disabled` affect form inputs?

It selects input elements that are disabled and cannot be interacted with by the user. Signup and view all the answers

What does the term 'nth child' refer to in CSS selectors?

Nth child refers to selecting elements based on their numerical position within a parent regardless of their type. Signup and view all the answers

What does `a:last-of-type` specifically select?

It selects the last anchor element among multiple types of children in a container. Signup and view all the answers

Explain the significance of the `Only Of Type Selector` in CSS.

The <code>a:only-of-type</code> selector identifies an anchor that is the only one of its kind within a container. Signup and view all the answers

How does the `input:focus` selector contribute to user experience?

It applies styles to input elements that are currently focused by the user. Signup and view all the answers

Study Notes

Basic Selectors

Universal Selector *: Selects all HTML elements on a page.
Type Selector div: Targets all <div> elements.
Class Selector .c: Targets all elements with the class c.
Id Selector #i: Targets the element with the id i. Best practice advises against using ids in CSS.

Combination Selectors

Descendant Selector div a: Selects <a> elements that are descendants of <div> elements.
Direct Child Selector div > a: Targets <a> elements that are direct children of <div>.
General Sibling Selector div ~ a: Targets <a> elements that are siblings of a <div> and come after it.
Adjacent Sibling Selector div + a: Targets <a> elements that are the immediate sibling following a <div>.
Or Selector div, a: Selects all matching divs and anchors in the document.
And Selector div.c: Selects all <div>s that also have the class c.

Attribute Selectors

Has Attribute [a]: Selects elements that have the a attribute.
Exact Attribute [a="1"]: Targets elements with the a attribute that equals 1.
Begins With Attribute [a^="1"]: Selects elements where the a attribute value starts with 1.
Ends With Attribute [a$="1"]: Selects elements that have the a attribute ending with 1.
Substring Attribute [a*="1"]: Targets elements with the a attribute containing the substring 1.

Pseudo Elements

Before Selector div::before: Inserts content before the first child of a <div>.
After Selector div::after: Inserts content after the last child of a <div>.

Pseudo Class States

Hover Selector button:hover: Selects buttons when hovered over by the mouse.
Focus Selector button:focus: Selects buttons that have keyboard or mouse focus.
Required Selector input:required: Targets <input> fields that are required.
Checked Selector input:checked: Selects checked checkbox/radio inputs.
Disabled Selector input:disabled: Targets inputs that are marked as disabled.

Pseudo Class Position/Other

First Child Selector a:first-child: Selects the first child of a parent element.
Last Child Selector a:last-child: Selects the last child of a parent element.
Nth Child Selector a:nth-child(2n): Targets every second child element.
Nth Last Child Selector a:nth-last-child(3): Selects the third child from the end.
Only Child Selector a:only-child: Targets an element if it is the only child of its parent.
First Of Type Selector a:first-of-type: Selects the first occurrence of a specified type within its parent.
Last Of Type Selector a:last-of-type: Targets the last occurrence of a specified type.
Nth Of Type Selector a:nth-of-type(2n): Selects every second occurrence of a specified type.
Nth Last Of Type Selector a:nth-last-of-type(2): Selects the second to last occurrence of a specified type.
Only Of Type Selector a:only-of-type: Targets if an element is the only instance of its type within its parent.
Not Selector a:not(.c): Selects all anchor tags excluding those with the class c.

Basic Selectors

Universal Selector *: Selects all HTML elements on a page.
Type Selector div: Targets all <div> elements.
Class Selector .c: Targets all elements with the class c.
Id Selector #i: Targets the element with the id i. Best practice advises against using ids in CSS.

Combination Selectors

Descendant Selector div a: Selects <a> elements that are descendants of <div> elements.
Direct Child Selector div > a: Targets <a> elements that are direct children of <div>.
General Sibling Selector div ~ a: Targets <a> elements that are siblings of a <div> and come after it.
Adjacent Sibling Selector div + a: Targets <a> elements that are the immediate sibling following a <div>.
Or Selector div, a: Selects all matching divs and anchors in the document.
And Selector div.c: Selects all <div>s that also have the class c.

Attribute Selectors

Has Attribute [a]: Selects elements that have the a attribute.
Exact Attribute [a="1"]: Targets elements with the a attribute that equals 1.
Begins With Attribute [a^="1"]: Selects elements where the a attribute value starts with 1.
Ends With Attribute [a$="1"]: Selects elements that have the a attribute ending with 1.
Substring Attribute [a*="1"]: Targets elements with the a attribute containing the substring 1.

Pseudo Elements

Before Selector div::before: Inserts content before the first child of a <div>.
After Selector div::after: Inserts content after the last child of a <div>.

Pseudo Class States

Hover Selector button:hover: Selects buttons when hovered over by the mouse.
Focus Selector button:focus: Selects buttons that have keyboard or mouse focus.
Required Selector input:required: Targets <input> fields that are required.
Checked Selector input:checked: Selects checked checkbox/radio inputs.
Disabled Selector input:disabled: Targets inputs that are marked as disabled.

Pseudo Class Position/Other

First Child Selector a:first-child: Selects the first child of a parent element.
Last Child Selector a:last-child: Selects the last child of a parent element.
Nth Child Selector a:nth-child(2n): Targets every second child element.
Nth Last Child Selector a:nth-last-child(3): Selects the third child from the end.
Only Child Selector a:only-child: Targets an element if it is the only child of its parent.
First Of Type Selector a:first-of-type: Selects the first occurrence of a specified type within its parent.
Last Of Type Selector a:last-of-type: Targets the last occurrence of a specified type.
Nth Of Type Selector a:nth-of-type(2n): Selects every second occurrence of a specified type.
Nth Last Of Type Selector a:nth-last-of-type(2): Selects the second to last occurrence of a specified type.
Only Of Type Selector a:only-of-type: Targets if an element is the only instance of its type within its parent.
Not Selector a:not(.c): Selects all anchor tags excluding those with the class c.

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Test your knowledge on the various CSS selectors, including basic, combination, and attribute selectors. This quiz will help reinforce your understanding of how to effectively target HTML elements using CSS. Perfect for students and web developers alike!

CSS Selectors Quiz

Podcast Beta

Questions and Answers

What does the input:required selector target?

Which selector is used to select the first child element within a container?

What does input:checked select?

Which pseudo-class selects elements that are the only child of their parent?

What does the universal selector (*) do in CSS?

Which selector would you use to style all div elements that have the class 'c'?

Which selector would you use to select the last anchor element in a container?

What does the descendant selector (div a) select?

What does the a:nth-child(2n) selector select?

Which selector targets elements that do not match a given selector?

Which selector is used to select elements that are direct children of a specified element?

What does the a:nth-last-child(3) selector specifically select?

What does the adjacent sibling selector (div + a) accomplish?

When would you use the attribute selector [a]?

The selector a:only-of-type is used for what purpose?

Which of the following selectors matches elements that have an attribute 'a' with exactly the value '1'?

What does the input:disabled selector target?

Which selector allows selecting the even-numbered child elements?

What is the purpose of using the begins with attribute selector [a^='1']?

What does the pseudo class :hover select?

What does the a:first-of-type selector do?

What does the selector div::before do?

Which of the following correctly describes the a:last-child selector?

The selector a:nth-of-type(2n) is primarily used to select what?

Which of these selectors would select all div elements and all anchors?

Which selector is best for selecting elements that contain a specific substring in an attribute?

What is the primary reason for not using IDs in CSS?

What does the general sibling selector (div ~ a) select?

What type of selector would you use to select all elements with a specific class named 'c'?

How does the div > a selector differ from div a?

What does the #i selector specifically target?

What is the difference between the general sibling selector div ~ a and the adjacent sibling selector div + a?

Which selector would you use to select elements that have an attribute named 'a' that contains the substring '1'?

What is the purpose of the selector div::before?

When would you use the :hover pseudo-class?

What does the div.c selector imply?

What is the function of the exact attribute selector [a='1']?

How does the begins with attribute selector [a^='1'] operate?

What type of elements does the attribute selector [a] select?

What is targeted by the selector div, a?

In what scenario would the ends with attribute selector [a$='1'] be useful?

Describe the function of the div::after selector.

How does the a:only-child selector function in CSS?

What does the :not pseudo-class accomplish when used with selectors?

Describe the difference between a:first-child and a:first-of-type selectors.

How do the selectors a:nth-child(2n) and a:nth-of-type(2n) differ?

What is the function of the input:checked selector in CSS?

Explain the a:nth-last-of-type(2) selector's purpose.

What does the input:required selector target in CSS?

Define the purpose of the a:last-child selector.

What is meant by the term 'pseudo-class' in CSS?

How does input:disabled affect form inputs?

What does the term 'nth child' refer to in CSS selectors?

What does a:last-of-type specifically select?

Explain the significance of the Only Of Type Selector in CSS.

How does the input:focus selector contribute to user experience?

Study Notes

Basic Selectors

Combination Selectors

Attribute Selectors

Pseudo Elements

Pseudo Class States

Pseudo Class Position/Other

Basic Selectors

Combination Selectors

Attribute Selectors

Pseudo Elements

Pseudo Class States

Pseudo Class Position/Other

Studying That Suits You

Description

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What does the `input:required` selector target?

What does `input:checked` select?

What does the `a:nth-child(2n)` selector select?

What does the `a:nth-last-child(3)` selector specifically select?

The selector `a:only-of-type` is used for what purpose?

What does the `input:disabled` selector target?

What does the `a:first-of-type` selector do?

Which of the following correctly describes the `a:last-child` selector?

The selector `a:nth-of-type(2n)` is primarily used to select what?

How does the `div > a` selector differ from `div a`?

What does the `#i` selector specifically target?

What is the difference between the general sibling selector `div ~ a` and the adjacent sibling selector `div + a`?

What is the purpose of the selector `div::before`?

When would you use the `:hover` pseudo-class?

What does the `div.c` selector imply?

What is the function of the exact attribute selector `[a='1']`?

How does the begins with attribute selector `[a^='1']` operate?

What type of elements does the attribute selector `[a]` select?

What is targeted by the selector `div, a`?

In what scenario would the ends with attribute selector `[a$='1']` be useful?

Describe the function of the `div::after` selector.

How does the `a:only-child` selector function in CSS?

What does the `:not` pseudo-class accomplish when used with selectors?

Describe the difference between `a:first-child` and `a:first-of-type` selectors.

How do the selectors `a:nth-child(2n)` and `a:nth-of-type(2n)` differ?

What is the function of the `input:checked` selector in CSS?

Explain the `a:nth-last-of-type(2)` selector's purpose.

What does the `input:required` selector target in CSS?

Define the purpose of the `a:last-child` selector.

How does `input:disabled` affect form inputs?

What does `a:last-of-type` specifically select?

Explain the significance of the `Only Of Type Selector` in CSS.

How does the `input:focus` selector contribute to user experience?