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? ? ????? JS ???? ????? ???? ?? ?? HTML ??? ??

????? ???? ?? ?? HTML ??? ??

Jan 14, 2025 pm 04:30 PM

Top HTML Interview Questions for Frontend Developers

?????, ????? ??? ???! ? ? ?? ???? ???? ?? ? ??? ???? HTML? ????? ?? ?????. ??? ???? ?? ?? ?? ???? HTML ??? ??? ??? ?????. ??????! ?


1. ??? HTML ??? ??????

???? ??? ??????? ??? ???? ?????. ??? ? ?? ?? ??? SEO? ??????. ?

?:

<!-- Semantic -->
<header>
  <h1>Welcome to My Blog</h1>
</header>
<article>
  <h2>How to Code</h2>
  <p>Start by learning the basics...</p>
</article>

<!-- Non-semantic -->
<div>



<p><strong>Why it matters:</strong> Semantic tags improve accessibility and help search engines understand your content better.</p>


<hr>

<h3>
  
  
  2. <strong>What is the difference between id and class attributes?</strong>
</h3>

<ul>
<li>
id: Unique identifier, used once per page.</li>
<li>
class: Can be reused multiple times for styling or grouping elements.</li>
</ul>

<p><strong>Example:</strong><br>
</p>

<pre class="brush:php;toolbar:false"><!-- Using id -->
<div>



<p><strong>Pro Tip:</strong> Use id for unique elements like headers or footers, and class for reusable components.</p>


<hr>

<h3>
  
  
  3. <strong>What are void elements in HTML?</strong>
</h3>

<p>Void elements are self-closing and don’t have a closing tag.</p>

<p><strong>Examples:</strong><br>
</p>

<pre class="brush:php;toolbar:false"><img src="image.jpg" alt="A beautiful view">
<input type="text" placeholder="Enter your name">
<hr>

???? ??: ?? ??? ?? ??? ???? ?? ??? HTML???!


4. HTML ??? JavaScript? ??? ??????

??????? ???? ???? ? ??? ????.

1) ???:

   <button onclick="alert('Hello!')">Click Me</button>

2) ??:

   <script>
     console.log('Hello from internal script!');
   </script>

3) ??:

   <script src="script.js"></script>

?? ?: ??? ? ? ????? ?? ????? ?????. ??


5. ????? alt ??? ??? ??????

alt ??? ???? ???? ?? ? ?? ??? ??? ?? ?? ???? ?????.

?:

<img src="logo.png" alt="Company Logo">

??? ??: ???? ??? SEO ??? ????.


6. HTML? ???, ??, ??? ?? ??? ???? ??????

  • ???: ? ??? ???? ?? ??? ??? ??? ?????.
  • ??: ? ??? ???? ?? ??? ?? ??? ?????.
  • ??? ??: ??? ???? ????? ??? ??? ??? ? ????.

?:

<!-- Inline -->
<span>This is inline</span>
<span>Another inline</span>

<!-- Block -->
<div>This is block</div>
<div>Another block</div>

<!-- Inline-block -->
<div>



<p><strong>Pro Tip:</strong> Use inline-block for layouts where you need elements side-by-side with specific dimensions.</p>


<hr>

<h3>
  
  
  7. <strong>What are data attributes in HTML?</strong>
</h3>

<p>Custom attributes to store extra data without cluttering your DOM.</p>

<p><strong>Example:</strong><br>
</p>

<pre class="brush:php;toolbar:false"><button data-user-id="123" onclick="handleClick(this)">Click Me</button>
<script>
  function handleClick(button) {
    alert(`User ID: ${button.dataset.userId}`);
  }
</script>

??? ??: ???? ?? JavaScript? ???? ???? ? ?????.


8. HTML ??? ?? ???? ??? ??? ?? ????

  • ??? ?? ??? ?????.
  • ? ?? ??? ?? ??? ?? aria-* ??? ?????.

?:

<button aria-label="Submit Form">Submit</button>

?? ?: ?? ???? ?? ??? ??? ????? ??????. ?


9. ? ???? ?????? ? ???

?:

<!-- Semantic -->
<header>
  <h1>Welcome to My Blog</h1>
</header>
<article>
  <h2>How to Code</h2>
  <p>Start by learning the basics...</p>
</article>

<!-- Non-semantic -->
<div>



<p><strong>Why it matters:</strong> Semantic tags improve accessibility and help search engines understand your content better.</p>


<hr>

<h3>
  
  
  2. <strong>What is the difference between id and class attributes?</strong>
</h3>

<ul>
<li>
id: Unique identifier, used once per page.</li>
<li>
class: Can be reused multiple times for styling or grouping elements.</li>
</ul>

<p><strong>Example:</strong><br>
</p>

<pre class="brush:php;toolbar:false"><!-- Using id -->
<div>



<p><strong>Pro Tip:</strong> Use id for unique elements like headers or footers, and class for reusable components.</p>


<hr>

<h3>
  
  
  3. <strong>What are void elements in HTML?</strong>
</h3>

<p>Void elements are self-closing and don’t have a closing tag.</p>

<p><strong>Examples:</strong><br>
</p>

<pre class="brush:php;toolbar:false"><img src="image.jpg" alt="A beautiful view">
<input type="text" placeholder="Enter your name">
<hr>

?? ?: ?? ???? ???. ??? ?????? ?? ??? ??????!


10. doctype ??? ??????

??? ??? ???? HTML ??? ?????.

?:

   <button onclick="alert('Hello!')">Click Me</button>

???? ??: ?? ????? ?? ??? ??? ???? ????? HTML5? ????? ?? ???? ?? ?? ????.


?? ??! ?

??? ??? ???? ?????. ?? ??? ??? ???! ?

  1. ?? ??? ??? ? ?? ??? ?????????
  • a)
  • b)
  • c)
  1. DOM? ??? ???? ???? ??? ??????
  • a) ??
  • b) ???
  • c) ???
  1. ? ?? ??: ??? ???? HTML ?????.

??? ??? ???? ??? ???! ?

? ??? ????? ???? ?? ?? HTML ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

? ????? ??
? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

???

??? ??

???++7.3.1

???++7.3.1

???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

??? ??, ???? ?? ????.

???? 13.0.1 ???

???? 13.0.1 ???

??? PHP ?? ?? ??

???? CS6

???? CS6

??? ? ?? ??

SublimeText3 Mac ??

SublimeText3 Mac ??

? ??? ?? ?? ?????(SublimeText3)

???

??? ??

??? ????
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?? API? ???? ??? ???? ??? ?????? ?? API? ???? ??? ???? ??? ?????? Jul 08, 2025 am 02:43 AM

Cacheapi? ?????? ?? ???? ??? ???? ???, ?? ??? ??? ?? ???? ? ??? ?? ? ???? ??? ??????. 1. ???? ????, ??? ??, ?? ?? ?? ???? ???? ??? ? ????. 2. ??? ?? ?? ??? ?? ? ? ????. 3. ?? ?? ?? ?? ?? ??? ??? ?? ?????. 4. ??? ???? ?? ?? ???? ?? ?? ?? ?? ?? ???? ?? ?? ??? ??? ? ????. 5. ?? ???? ??, ??? ??? ? ??? ??, ?? ??? ? ?? ???? ???? ???? ? ?? ?????. 6.?? ??? ?? ?? ?? ??, ???? ?? ? HTTP ?? ????? ?????? ???????.

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??? JavaScript?? ??? ??? ?????? ?? ???????. ?? ??, ?? ?? ? ??? ??? ?? ????? ????? ?????. 1. ?? ??? ??? ????? ???? ??. ()? ?? ??? ??? ?????. ?. ()? ?? ??? ?? ??? ??? ?? ? ? ????. 2. ?? ??? .catch ()? ???? ?? ??? ??? ?? ??? ??????, ??? ???? ???? ????? ??? ? ????. 3. Promise.all ()? ?? ????? (?? ?? ?? ? ??????? ??), Promise.Race () (? ?? ??? ?? ?) ? Promise.AllSettled () (?? ??? ???? ??)

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??? ??? ?? ???? ?? ??? ???? ?? ??? ??? ?? ??? ?? ??? ?????. 1. ??? ?? : ?? ??? ?? ? ? ???? ?? ??? ???? ??? ???? ??????. ?? ??, ??? ?? ? ? ?? ??? ?? ? ?? ??? ??????. 2. ??? ?? : ??? ???? ?? ?? ??? ?? ???? ????? ? ?? ?????? ???? ????? ? ?? ?? ??? true? ??????. 3. ?? ???? ?? ?? ??? ?? ??, ?? ??? ? ?? ???? ?????. 4. DOM ??? ???? ??, ?? ? ??? ? ??? ??? ?? ???? ?? ???? ?????.

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