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    <h2>Short Answer</h2> <p>Use an <code>&lt;img&gt;</code> - not a button or an anchor or an input - as the rest suggest that the element is interactive, <em>even without JavaScript</em>.</p> <h2>Long Answer</h2> <blockquote> <p>clicking on the image is supposed to call an action (via javascript, but that's not the point).</p> </blockquote> <p>I disagree; that <em>is</em> the point :)</p> <p>Because the clicking activates JS-only features, your image should only be available in a JS environment.</p> <p>As such the proper way is to insert it with JavaScript; while an HTML document should be semantically correct, a DOM structure doesn't really need to be semantically correct, so which element you use becomes irrelevant.</p> <h2>The Wrong Way</h2> <pre><code>&lt;div&gt; Click on the image to do something: &lt;a href="javascript:wtv()" style="background-image:url(...)"&gt;&amp;nbsp;&lt;/a&gt; &lt;/div&gt; &lt;div&gt; Click on the image to do something: &lt;input type="image" onclick="wtv()" src="..." /&gt; &lt;/div&gt; &lt;div&gt; Click on the image to do something: &lt;img onclick="wtv()" src="..." /&gt; &lt;/div&gt; &lt;div&gt; Click on the image to do something: &lt;button onclick="wtv()"&gt;&lt;img onclick="wtv()" src="..." /&gt;&lt;/button&gt; &lt;/div&gt; </code></pre> <p>These are all wrong because a user who doesn't have JavaScript sees these items and can't use them.</p> <p>Of all of these, I'd say the <code>&lt;img&gt;</code> is the lesser evil, as it doesn't suggest an interactive element. The greatest evil is using the <code>&lt;a&gt;</code> as an anchor should be a hyperlink to another document, and you should never, <em>ever</em> use the <code>javascript:</code> protocol.</p> <p>You'll still have the same problem when you add the JavaScript event handlers externally:</p> <pre><code>/* external .js file */ document.getElementById("myButton").onclick = wtv; &lt;!-- HTML document --&gt; &lt;div id="myButtonParent"&gt; Click on the image to do something: &lt;a id="myButton" href="#" style="background-image:url(...)"&gt;&amp;nbsp;&lt;/a&gt; &lt;/div&gt; </code></pre> <p>As, again, you still have the (non-functioning) hyperlink available to those users who don't have JavaScript.</p> <h2>Instead</h2> <p>Instead, insert the whole damn thing using DOM scripting! I'm going to use an <code>&lt;img&gt;</code> with an <code>onclick</code> event:</p> <pre><code>/* external .js file */ window.onload = function() { var img = document.createElement("img"); img.src = "..."; img.onclick = wtv; img.style.cursor = "pointer"; // so the mouse turns into a finger, // like on a hyperlink // Note: instead assign a class attribute and put this in an external CSS file... document.getElementById("myButtonParent").appendChild(img); } </code></pre>
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    1. POWhich is the _proper_ html element to use for calling action when clicking on an image?
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    1. USRichard JP Le Guen
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    1. POWhich is the _proper_ html element to use for calling action when clicking on an image?
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    1. COWhile I agree with most of what you've said, I think dynamically creating any content that a user would interact with and result in some action might be going a bit far. Now if he needs to support a client without scripting then yes I would consider this. I'm just glad I've never worked on a web project which had to support this user minority.
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      1. USJoshBerke
    2. COHey great! Did not only give me examples on how not to do it, but also gave me a headstart on how to do DOM scripting... Great as an example to do further learning :) But as said above, I have the good excuse that for my case the app is inhouse so I can tell people to please enable js ;)
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    3. CO@Josh - I interpret "proper" as meaning "theoretically ideal" ;)
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