svelte:head for document head - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a title inside the document head using svelte:head.

Svelte

<svelte:head>
  <title>[1]</title>
</svelte:head>

Drag options to blanks, or click blank then click option'

Abody

Bhead

CMy Page Title

Dscript

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the title text outside the <title> tag

Using head or body as title text

The svelte:head tag lets you add elements like <title> inside the document head. Here, the title text should be inside the <title> tag.

2fill in blank

medium

Complete the code to add a meta description inside the document head using svelte:head.

Svelte

<svelte:head>
  <meta name="description" content="[1]">
</svelte:head>

Drag options to blanks, or click blank then click option'

Acontent

BA cool Svelte app

Cdescription

Dmeta

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the word 'content' instead of the actual description

Confusing the 'name' and 'content' attributes

The content attribute of the <meta> tag holds the description text. Here, you fill in the description string.

3fill in blank

hard

Fix the error in the code to correctly add a favicon link inside the document head using svelte:head.

Svelte

<svelte:head>
  <link rel="icon" href=[1]>
</svelte:head>

Drag options to blanks, or click blank then click option'

A"/favicon.ico"

B/favicon.ico

C'favicon.ico'

Dfavicon.ico

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving the URL unquoted

Using single quotes instead of double quotes (both work in HTML but here double quotes are preferred)

The href attribute value must be a quoted string. Without quotes, it causes an error.

4fill in blank

hard

Fill both blanks to add a viewport meta tag inside the document head using svelte:head.

Svelte

<svelte:head>
  <meta name=[1] content=[2]>
</svelte:head>

Drag options to blanks, or click blank then click option'

A"viewport"

B"width=device-width, initial-scale=1"

C"description"

D"A Svelte app"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'description' instead of 'viewport' for the name

Putting description text in the content attribute

The viewport meta tag controls how the page scales on different devices. The name should be "viewport" and content should specify width and scale.

5fill in blank

hard

Fill all three blanks to add charset, author meta tags, and a title inside the document head using svelte:head.

Svelte

<svelte:head>
  <meta charset=[1]>
  <meta name=[2] content=[3]>
  <title>My Svelte App</title>
</svelte:head>

Drag options to blanks, or click blank then click option'

A"UTF-8"

B"author"

C"John Doe"

D"viewport"

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect charset value

Confusing author with viewport or description meta tags

The charset meta tag sets the character encoding, usually "UTF-8". The author meta tag uses name="author" and the content is the author's name.

Practice

1. What is the main purpose of the <svelte:head> tag in a Svelte component?

easy

A. To add or modify elements inside the HTML <head> section of the page.

B. To create a new HTML section inside the body of the page.

C. To style the component using CSS.

D. To handle user input events in the component.

Solution

1. Step 1: Understand the role of <svelte:head>

   The <svelte:head> tag is specifically designed to insert or update tags inside the HTML <head> section, such as titles and meta tags.

2. Step 2: Compare with other options

   Options A, B, and C describe unrelated tasks: event handling, body content, and styling, which are not the purpose of <svelte:head>.

3. Final Answer:

   To add or modify elements inside the HTML <head> section of the page. -> Option A

4. Quick Check:

   svelte:head modifies <head> = D [OK]

Hint: Remember: svelte:head changes the document head, not body content. [OK]

Common Mistakes:

• Confusing svelte:head with component body content
• Thinking it styles components directly
• Assuming it handles events

2. Which of the following is the correct syntax to set the page title using <svelte:head> in a Svelte component?

easy

A. My Page

B. My Page

C. My Page

D. My Page

Solution

1. Step 1: Identify correct tag usage

   The correct tag to modify the document head in Svelte is <svelte:head>, not <svelte-head> or <head> inside it.

2. Step 2: Check nesting rules

   You place the <title> tag directly inside <svelte:head>, without nesting another <head> tag inside it.

3. Final Answer:

   <svelte:head><title>My Page</title></svelte:head> -> Option C

4. Quick Check:

   Correct svelte:head syntax = C [OK]

Hint: Use exactly with direct children tags inside. [OK]

Common Mistakes:

• Using <head> instead of
• Adding extra <head> inside
• Misspelling the tag as

3. Given this Svelte component code, what will be the page title after rendering?

<script>
  let pageTitle = 'Welcome';
</script>

<svelte:head>
  <title>{pageTitle} to Svelte</title>
</svelte:head>

<h1>Hello!</h1>

medium

A. {pageTitle} to Svelte

B. Welcome to Svelte

C. pageTitle to Svelte

D. Hello!

Solution

1. Step 1: Understand variable interpolation in svelte:head

   The variable pageTitle is set to 'Welcome' and used inside the <title> tag with curly braces, so it will be replaced by its value.

2. Step 2: Determine the final title text

   The title becomes 'Welcome to Svelte' because the variable is replaced and concatenated with the string ' to Svelte'.

3. Final Answer:

   Welcome to Svelte -> Option B

4. Quick Check:

   Variable interpolation works in svelte:head = B [OK]

Hint: Variables inside { } in svelte:head render their values. [OK]

Common Mistakes:

• Thinking variables show as literal text
• Confusing page content with title text
• Ignoring interpolation syntax

4. What is wrong with this Svelte code snippet?

<svelte:head>
  <title>My Site</title>
  <meta name="description" content="A cool site">
</svelte:head>

medium

A. Nothing is wrong; this code is valid.

B. The <title> tag cannot be used inside <svelte:head>.

C. The <meta> tag must be self-closed with /> in Svelte.

D. The <meta> tag is missing a closing slash.

Solution

1. Step 1: Check HTML validity inside svelte:head

   In HTML5, the <meta> tag is a void element and does not require a closing slash. It is valid to write it without />.

2. Step 2: Confirm usage of title and meta tags

   Both <title> and <meta> tags are allowed inside <svelte:head> to modify the document head.

3. Final Answer:

   Nothing is wrong; this code is valid. -> Option A

4. Quick Check:

   HTML5 void tags don't need closing slash = A [OK]

Hint: Void tags like <meta> don't need closing slash in HTML5. [OK]

Common Mistakes:

• Adding unnecessary closing slash to <meta>
• Thinking <title> is disallowed in svelte:head
• Confusing XHTML rules with HTML5

5. You want to dynamically update the page description meta tag based on a component variable desc. Which Svelte code correctly updates the meta description in the document head when desc changes?

<script>
  let desc = 'Initial description';
</script>

<!-- Choose the correct svelte:head usage -->

hard

A.

B.

C.
{desc}

D.

Solution

1. Step 1: Understand attribute binding in svelte:head

   To dynamically set an attribute value, use curly braces without quotes around the variable, like content={desc}.

2. Step 2: Check invalid options

   uses quotes around {desc}, so it treats it as a literal string, not variable. {desc} incorrectly places content inside <meta>, which is a void tag and cannot have children. misses curly braces around desc.

3. Final Answer:

   <svelte:head> <meta name="description" content={desc}> </svelte:head> -> Option D

4. Quick Check:

   Use content={variable} without quotes for dynamic meta tags = A [OK]

Hint: Use content={desc} without quotes for dynamic meta tag content. [OK]

Common Mistakes:

• Putting quotes around {desc} making it a string
• Adding children inside <meta> tag
• Using incorrect tag closing for void elements