Why should one add ID to their HTML tags?

Question

A simple question: why should we add the id into our HTML tags if they work perfectly well without them? I know that one of their uses is being able to navigate

Answer 1

They're most often used to uniquely identify elements for styling (CSS) and scripting (JavaScript et al) purposes.

But if you're asking about HTML and only HTML, then one example where declarative IDs are useful is associating a with its , or </code> control via its <code>for</code> attribute:</p> <pre><code><label for="ex">Example field:</label> <input type="text" name="ex" id="ex"> </code></pre> <p>Without assigning this attribute, activating the label does nothing, but when you pair both elements together using <code>for</code> and <code>id</code>, activating the label causes its control to gain focus.</p> <p>The other way to associate a form label with its control is to contain it within the label:</p> <pre><code><label> Example field: <input type="text" name="ex"> </label> </code></pre> <p>But this doesn't always suit the structure of a form or a page, so an ID reference is offered as an alternative.</p> <p>Other circumstances where an <code>id</code> attribute serves a function are covered extensively in Alohci's answer.</p> </p> <div class="appendcontent"> </div> </div> <div class="jieda-reply"> <span class="jieda-zan button_agree" type="zan" data-id='561166'> <i class="iconfont icon-zan"></i> <em>0</em> </span> <span type="reply" class="showpinglun" data-id="561166"> <i class="iconfont icon-svgmoban53"></i> 讨论(0) </span> <div class="jieda-admin"> </div> <div class="noreplaytext bb"> <center><div> <a href="https://www.e-learn.cn/qa/q-143360.html"> 查看其它9个回答 </a> </div></center> </div> </div> <div class="comments-mod " style="display: none; 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