Audio tag basics in HTML - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add an audio player that plays "song.mp3".

HTML

<audio controls>
  <source src="song.mp3" type="[1]">
  Your browser does not support the audio element.
</audio>

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

Avideo/mp4

Baudio/mpeg

Cimage/png

Dtext/html

Attempts:

3 left

💡 Hint

Common Mistakes

Using video or image MIME types instead of audio types.

Leaving the type attribute empty or incorrect.

The type attribute specifies the audio file format. For MP3 files, use audio/mpeg.

2fill in blank

medium

Complete the code to add an audio player that automatically starts playing when the page loads.

HTML

<audio controls [1]>
  <source src="music.ogg" type="audio/ogg">
  Your browser does not support the audio element.
</audio>

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

Aautoplay

Bmuted

Cloop

Dpreload

Attempts:

3 left

💡 Hint

Common Mistakes

Using loop instead of autoplay.

Forgetting that autoplay is a boolean attribute.

The autoplay attribute makes the audio start playing automatically when the page loads.

3fill in blank

hard

Fix the error in the audio tag to make it valid and playable.

HTML

<audio controls>
  <source src="sound.wav" type="[1]">
  Your browser does not support the audio element.
</audio>

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

Aaudio/mp3

Baudio/wave

Caudio/wav

Dvideo/wav

Attempts:

3 left

💡 Hint

Common Mistakes

Using audio/mp3 for WAV files.

Using video MIME types for audio files.

The correct MIME type for WAV audio files is audio/wav. Using audio/wave or audio/mp3 is incorrect for WAV files.

4fill in blank

hard

Fill both blanks to create an audio player that loops and is muted by default.

HTML

<audio controls [1] [2]>
  <source src="track.mp3" type="audio/mpeg">
  Your browser does not support the audio element.
</audio>

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

Aloop

Bautoplay

Cmuted

Dpreload

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing autoplay with loop.

Using preload instead of muted.

The loop attribute makes the audio repeat continuously. The muted attribute starts the audio muted.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps audio file names to their MIME types, but only for files ending with '.mp3'.

HTML

audio_types = { [1]: [2] for [3] in files if [1].endswith('.mp3') }

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

Afile

B"audio/mpeg"

Dfilename

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names inconsistently.

Not filtering files by '.mp3' extension.

This comprehension creates a dictionary where each key is a file name ending with '.mp3' and the value is the MIME type "audio/mpeg".

Practice

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

easy

A. To create clickable buttons

B. To display images on a web page

C. To add sound or music to a web page

D. To add video content

Solution

1. Step 1: Understand the tag's function

   The <audio> tag is designed to embed sound files in web pages.

2. Step 2: Compare with other media tags

   Unlike <img> for images or <video> for videos, <audio> specifically handles audio content.

3. Final Answer:

   To add sound or music to a web page -> Option C

4. Quick Check:

   Audio tag = sound embedding [OK]

Hint: Audio tag is for sound, not images or video [OK]

Common Mistakes:

• Confusing audio with video or images
• Thinking audio tag creates buttons
• Assuming audio tag is for text

2. Which attribute must you add to the <audio> tag to show playback controls like play and pause buttons?

easy

A. src

B. loop

C. autoplay

D. controls

Solution

1. Step 1: Identify attribute for controls

   The controls attribute tells the browser to display play, pause, and volume buttons.

2. Step 2: Differentiate from other attributes

   src sets the audio file, autoplay starts playing automatically, and loop repeats the audio.

3. Final Answer:

   controls -> Option D

4. Quick Check:

   Controls attribute = playback buttons [OK]

Hint: Controls attribute shows play/pause buttons [OK]

Common Mistakes:

• Using src instead of controls for buttons
• Confusing autoplay with controls
• Forgetting controls attribute to show buttons

3. What will happen when this HTML code runs in a modern browser?

<audio controls>
  <source src="sound.mp3" type="audio/mpeg">
  <source src="sound.ogg" type="audio/ogg">
  Your browser does not support the audio element.
</audio>

medium

A. The audio player with controls will appear and play sound.mp3 or sound.ogg

B. Only sound.ogg will play because it is the last source

C. No audio will play because multiple sources confuse the browser

D. The text 'Your browser does not support the audio element.' will always show

Solution

1. Step 1: Understand multiple sources usage

   The <source> tags provide alternative audio formats so browsers can pick the one they support.

2. Step 2: Check controls and fallback text

   The controls attribute shows the player, and fallback text shows only if audio is unsupported.

3. Final Answer:

   The audio player with controls will appear and play sound.mp3 or sound.ogg -> Option A

4. Quick Check:

   Multiple sources = browser picks supported audio [OK]

Hint: Multiple sources let browsers pick supported audio [OK]

Common Mistakes:

• Thinking only last source plays
• Assuming fallback text always shows
• Believing multiple sources cause errors

4. Identify the error in this audio tag code:

<audio src="music.mp3" controls>
  <source src="music.ogg" type="audio/ogg">
</audio>

medium

A. The controls attribute is missing

B. The src attribute should not be used with <source> tags inside <audio>

C. The type attribute is missing in the src attribute

D. The <source> tag must come before the src attribute

Solution

1. Step 1: Understand usage of src and source

   When using <source> tags inside <audio>, do not use the src attribute on <audio> itself.

2. Step 2: Reason why mixing causes issues

   Using both confuses the browser which source to play; only <source> tags or only src should be used.

3. Final Answer:

   The src attribute should not be used with <source> tags inside <audio> -> Option B

4. Quick Check:

   Use either src or source tags, not both [OK]

Hint: Use src or source tags, never both together [OK]

Common Mistakes:

• Using src attribute with source tags
• Thinking controls attribute is missing
• Believing order of source and src matters

5. You want to add an audio player that automatically plays a sound once the page loads, loops it continuously, and hides controls. Which is the correct HTML code?

hard

A. <audio src="theme.mp3" autoplay loop></audio>

B. <audio src="theme.mp3" controls></audio>

C. <audio src="theme.mp3" autoplay loop controls></audio>

D. <audio src="theme.mp3" loop></audio>

Solution

1. Step 1: Identify attributes for autoplay and loop

   The autoplay attribute starts playing automatically, and loop repeats the audio continuously.

2. Step 2: Check controls visibility

   To hide controls, do not include the controls attribute.

3. Final Answer:

   <audio src="theme.mp3" autoplay loop></audio> -> Option A

4. Quick Check:

   Autoplay + loop without controls = <audio src="theme.mp3" autoplay loop></audio> [OK]

Hint: Autoplay and loop without controls hides buttons [OK]

Common Mistakes:

• Including controls when hiding buttons is needed
• Forgetting autoplay or loop attributes
• Using incorrect attribute names