Textarea in HTML - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the <textarea> element in HTML?

The <textarea> element creates a multi-line text input area where users can enter longer text, like comments or messages.

beginner

How do you set the visible size of a <textarea>?

Use the rows attribute to set the number of visible text lines and the cols attribute to set the visible width in characters.

intermediate

How can you make a <textarea> accessible for screen readers?

Use a <label> element linked with the for attribute matching the <textarea>'s id. This helps screen readers announce the purpose of the textarea.

beginner

What attribute disables user input in a <textarea>?

The disabled attribute makes the textarea uneditable and prevents users from typing or changing its content.

beginner

How do you add placeholder text inside a <textarea>?

Use the placeholder attribute to show a short hint or example text inside the textarea before the user types anything.

Which attribute controls the number of visible lines in a <textarea>?

A cols

B size

C length

D rows

The rows attribute sets how many lines tall the textarea appears.

How do you link a <label> to a <textarea> for accessibility?

A No linking is needed

B Use the <code>for</code> attribute on the label matching the textarea's <code>id</code>

C Use the <code>name</code> attribute on the label

D Place the label inside the textarea

Linking with for and id helps screen readers identify the textarea's purpose.

What happens if you add the disabled attribute to a <textarea>?

A The textarea becomes read-only and uneditable

B The textarea disappears

C The textarea allows unlimited input

D The textarea resets its content

The disabled attribute prevents user input and grays out the textarea.

Which attribute shows a hint inside a <textarea> before typing?

A hint

B title

C placeholder

D label

The placeholder attribute displays example text inside the textarea.

What is the default behavior of a <textarea> element?

A Allows multi-line text input

B Allows only single-line input

C Is read-only by default

D Is hidden by default

The textarea is designed for multi-line text input by default.

Explain how to create an accessible multi-line text input using the <textarea> element.

Think about size, labeling, and user guidance.

Describe the difference between the rows and cols attributes in a <textarea>.

One controls height, the other width.

Practice

1. What is the main purpose of the <textarea> tag in HTML?

easy

A. To display a single line of text that cannot be edited.

B. To add a button that submits a form.

C. To create a multi-line text input box for users to type in.

D. To insert an image into the webpage.

Solution

1. Step 1: Understand the <textarea> tag function

   The <textarea> tag is designed to allow users to enter multiple lines of text, unlike <input> which is usually single line.

2. Step 2: Compare options with the tag's purpose

   Options A, C, and D describe other HTML elements or functions, not multi-line text input.

3. Final Answer:

   To create a multi-line text input box for users to type in. -> Option C

4. Quick Check:

   Textarea = multi-line input [OK]

Hint: Textarea means multi-line text box for typing [OK]

Common Mistakes:

• Confusing <textarea> with <input> for single line input
• Thinking <textarea> is for buttons or images
• Assuming <textarea> is read-only

2. Which of the following is the correct way to set the size of a <textarea> using HTML attributes?

easy

A. <textarea rows='4' cols='50'></textarea>

B. <textarea length='50' height='4'></textarea>

C. <textarea size='large'></textarea>

D. <textarea width='300' height='100'></textarea>

Solution

1. Step 1: Recall valid <textarea> size attributes

   The rows and cols attributes define the visible height and width in lines and characters.

2. Step 2: Check each option for correct attribute usage

   <textarea rows='4' cols='50'></textarea> uses rows and cols correctly. Options A, B, and C use invalid or non-existent attributes.

3. Final Answer:

   <textarea rows='4' cols='50'></textarea> -> Option A

4. Quick Check:

   Rows and cols set size [OK]

Hint: Use rows and cols to size textarea in HTML [OK]

Common Mistakes:

• Using width and height attributes directly on textarea
• Using non-standard attributes like size or length
• Confusing CSS properties with HTML attributes

3. What will be displayed in the browser for this HTML snippet?

<label for='msg'>Message:</label>
<textarea id='msg' rows='3' cols='20'>Hello World</textarea>

medium

A. A textarea box with no text inside and no label.

B. Only the text 'Hello World' displayed as plain text, no textarea box.

C. An error message because 'for' attribute is invalid on label.

D. A label 'Message:' and a textarea box showing 'Hello World' inside it with 3 rows and 20 columns.

Solution

1. Step 1: Understand label and textarea relationship

   The label with for='msg' links to the textarea with id='msg', so the label 'Message:' appears next to the textarea.

2. Step 2: Check textarea content and size

   The textarea shows the default text 'Hello World' inside it, sized with 3 rows and 20 columns.

3. Final Answer:

   A label 'Message:' and a textarea box showing 'Hello World' inside it with 3 rows and 20 columns. -> Option D

4. Quick Check:

   Label linked and textarea shows default text [OK]

Hint: Label with for matches textarea id; default text shows inside [OK]

Common Mistakes:

• Thinking label text appears inside textarea
• Assuming textarea is empty if text is inside tags
• Believing 'for' attribute causes error

4. Identify the error in this HTML code snippet:

<textarea rows='5' cols='30'>Enter your comment here</textarea

medium

A. Missing closing angle bracket '>' at the end of the closing textarea tag.

B. Incorrect use of rows and cols attributes.

C. Textarea cannot have default text inside it.

D. Textarea tag should be self-closing.

Solution

1. Step 1: Check the closing tag syntax

   The closing </textarea tag is missing the closing '>' character, which is required to properly close the tag.

2. Step 2: Validate other parts of the code

   The rows and cols attributes are correctly used, default text inside textarea is allowed, and textarea is not self-closing.

3. Final Answer:

   Missing closing angle bracket '>' at the end of the closing textarea tag. -> Option A

4. Quick Check:

   Proper closing tag syntax needed [OK]

Hint: Always close tags fully with '>' [OK]

Common Mistakes:

• Forgetting the closing '>' in tags
• Thinking textarea must be self-closing
• Believing default text inside textarea is invalid

5. You want to create a form with a textarea that is accessible and responsive. Which of the following is the best practice?

hard

A. Use a placeholder inside the textarea instead of a label, and fix width with pixels.

B. Use a <label> linked to the textarea with for and id, set rows and cols, and style width with CSS using relative units.

C. Do not use a label, set rows and cols to zero, and rely on default size.

D. Use inline styles with fixed pixel width and no label for simplicity.

Solution

1. Step 1: Ensure accessibility with label and linking

   Using a <label> with for attribute matching the textarea's id helps screen readers and keyboard users.

2. Step 2: Use rows and cols for basic size and CSS with relative units for responsiveness

   Rows and cols define visible size, while CSS with relative units like em or % makes the textarea adapt to different screen sizes.

3. Final Answer:

   Use a <label> linked to the textarea with for and id, set rows and cols, and style width with CSS using relative units. -> Option B

4. Quick Check:

   Label + rows/cols + responsive CSS = best practice [OK]

Hint: Always label textarea and use relative CSS units for responsiveness [OK]

Common Mistakes:

• Using placeholder instead of label for accessibility
• Fixing width with pixels causing poor responsiveness
• Omitting label making form less accessible