Table headers in HTML - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a table header cell.

HTML

<table>
  <tr>
    <[1]>Name</[1]>
  </tr>
</table>

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

Athead

Btd

Ctr

Dth

Attempts:

3 left

💡 Hint

Common Mistakes

Using instead of for header cells.

Using or tags incorrectly inside a row.

The <th> tag defines a header cell in a table row.

2fill in blank

medium

Complete the code to add a table header row inside the table head section.

HTML

<table>
  <[1]>
    <tr>
      <th>Age</th>
    </tr>
  </[1]>
</table>

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

Atr

Btfoot

Cthead

Dtbody

Attempts:

3 left

💡 Hint

Common Mistakes

Using or instead of for header rows.

Using as a container tag.

The <thead> tag groups the header content in a table.

3fill in blank

hard

Fix the error in the table header cell tag.

HTML

<table>
  <tr>
    <[1]>Email</[1]>
  </tr>
</table>

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

Ath

Btr

Cthead

Dtd

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing and tags in the same cell.

Using or tags incorrectly.

The opening tag must match the closing tag. Use <th> for header cells, not <td>.

4fill in blank

hard

Fill both blanks to create a table with a header and body.

HTML

<table>
  <[1]>
    <tr><th>City</th></tr>
  </[1]>
  <[2]>
    <tr><td>Paris</td></tr>
  </[2]>
</table>

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

Athead

Btbody

Ctfoot

Dtr

Attempts:

3 left

💡 Hint

Common Mistakes

Using instead of for body rows.

Using as a container for multiple rows.

<thead> wraps header rows, and <tbody> wraps body rows in a table.

5fill in blank

hard

Fill all three blanks to create a table with a header row and two body rows.

HTML

<table>
  <[1]>
    <tr><th>Name</th><th>Age</th></tr>
  </[1]>
  <[2]>
    <tr><td>Alice</td><td>30</td></tr>
    <tr><td>Bob</td><td>25</td></tr>
  </[2]>
  <[3]></[3]>
</table>

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

Athead

Btbody

Ctfoot

Dtr

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the footer section or using wrong tags.

Using as a container for multiple rows.

<thead> for header, <tbody> for body, and <tfoot> for footer sections of a table.

Practice

1. What is the main purpose of the <th> tag in an HTML table?

easy

A. To define a header cell that labels a column or row

B. To create a normal data cell in a table

C. To add a caption above the table

D. To merge multiple cells into one

Solution

1. Step 1: Understand the role of <th>

   The <th> tag is used to create header cells in a table, which label columns or rows.

2. Step 2: Differentiate from other tags

   The <td> tag creates normal data cells, not headers. Captions use <caption>, and merging cells uses colspan or rowspan.

3. Final Answer:

   To define a header cell that labels a column or row -> Option A

4. Quick Check:

   Table headers = <th> tag [OK]

Hint: Headers label columns or rows using <th> tags [OK]

Common Mistakes:

• Confusing <th> with <td>
• Thinking <th> merges cells
• Using <caption> as header cells

2. Which of the following is the correct syntax to create a table header cell for a column named "Name"?

easy

A. Name

B. Name

C. Name

D. Name

Solution

1. Step 1: Identify the tag for header cells

   The correct tag for a table header cell is <th>.

2. Step 2: Check the options

   <td> is for data cells, <header> is a page section tag, and <thead> groups header rows but does not create individual cells.

3. Final Answer:

   <th>Name</th> -> Option D

4. Quick Check:

   Header cell = <th> [OK]

Hint: Use <th> for header cells, not <td> or <header> [OK]

Common Mistakes:

• Using <td> instead of <th>
• Confusing <thead> with <th>
• Using non-table tags like <header>

3. Given the following HTML snippet, what will be the visual effect of the <th> elements in most browsers?

<table>
  <thead>
    <tr>
      <th>ID</th>
      <th>Name</th>
      <th>Age</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>1</td>
      <td>Alice</td>
      <td>30</td>
    </tr>
  </tbody>
</table>

medium

A. The header cells will look the same as data cells

B. The header cells will be italic and left-aligned

C. The header cells will be bold and centered by default

D. The header cells will be hidden from view

Solution

1. Step 1: Understand default browser styles for <th>

   Browsers typically render <th> cells with bold text and center alignment to distinguish headers.

2. Step 2: Compare with data cells

   Data cells (<td>) are usually normal weight and left-aligned by default.

3. Final Answer:

   The header cells will be bold and centered by default -> Option C

4. Quick Check:

   <th> = bold + center [OK]

Hint: Headers appear bold and centered by default [OK]

Common Mistakes:

• Thinking headers are italic
• Assuming headers look like data cells
• Believing headers are hidden

4. Identify the error in this table header code:

<table>
  <thead>
    <tr>
      <th>Product</td>
      <th>Price</th>
    </tr>
  </thead>
</table>

medium

A. The second header cell uses <th> instead of <td>

B. The first header cell closes with </td> instead of </th>

C. The <tr> tag is not closed

D. The <thead> tag is missing

Solution

1. Step 1: Check tag consistency in header cells

   The first header cell starts with <th> but incorrectly closes with </td>, which is invalid.

2. Step 2: Verify other tags

   The <thead> and <tr> tags are correctly used and closed. The second header cell uses <th> correctly.

3. Final Answer:

   The first header cell closes with </td> instead of </th> -> Option B

4. Quick Check:

   Matching tags for <th> = </th> [OK]

Hint: Match opening and closing tags exactly for <th> [OK]

Common Mistakes:

• Mixing <th> and <td> tags
• Forgetting to close <tr> or <thead>
• Using <td> inside <thead>

5. You want to create a table where the first column uses header cells to label each row, and the top row uses header cells to label each column. Which is the correct way to do this?

hard

A. Col1Col2Row1Data1Data2

B. Col1Col2Row1Data1Data2

C. Col1Col2Row1Data1Data2

D. Col1Col2Row1Data1Data2

Solution

1. Step 1: Use <th> for both column and row headers

   The top row headers and the first column headers should use <th> tags to indicate headers.

2. Step 2: Check the provided options

   Col1Col2Row1Data1Data2 correctly uses <th> in the top row and first column. The empty <th> in the top-left corner aligns headers properly.

3. Final Answer:

   Option A uses <th> for both row and column headers correctly -> Option A

4. Quick Check:

   Row and column headers = <th> tags [OK]

Hint: Use <th> for headers in both top row and first column [OK]

Common Mistakes:

• Using <td> for headers in the first column
• Leaving top-left cell empty without <th>
• Mixing <td> and <th> incorrectly