记住，基本上，它们的自我也不执行任何函数。 它们不仅仅通过标记来确定功能。

它们只能在CSS的帮助下进行定制。

现在回到你的问题:

SPAN标签加上一些样式将是有用的，在一行中，比如在一个段落中，在html中。 这是HTML中的行级或语句级。

例子:

<p>Am writing<span class="time">this answer</span> in my free time of my day.</p>

DIV标签的功能就像上面说的那样，只能在样式的支持下可见，可以容纳大量的HTML代码。

DIV是块级

例子:

    <div class="large-time">
    <p>Am writing <span class="time"> this answer</span> in my free time of my day. 
    </p>
    </div>

根据您的需求，这两种方法都有使用的时间和情况。

希望我的答案很清楚。 谢谢你！

Div是一个块元素 Span是一个内联元素。

这意味着要在语义上使用它们，div应该用于包装文档的各个部分，而span应该用于包装文本、图像等小部分。

例如:

<div>This a large main division, with <span>a small bit</span> of spanned text!</div>

注意，在内联元素中放置块级元素是非法的，因此:

<div>Some <span>text that <div>I want</div> to mark</span> up</div>

.．.是非法的。

编辑:从HTML5开始，一些块元素可以放在一些内联元素中。请参阅这里的MDN参考，以获得相当清晰的清单。以上仍然是非法的，因为<span>只接受短语内容，而<div>是流内容。

你要求一些具体的例子，所以这是一个从我的保龄球网站，BowlSK:

< div id = "头" > < div id = " userbar " > 嗨，大家好，<span class="username">Chris Marasti-Georg</span> | <a href="/edit-profile.html">Profile</a> | .html < a href = " https://www.bowlsk.com/_ah/logout?..。“>签署< / > < / div > < h1 > < a href = " / " >碗<跨类= >“sk sk < / span > < / > < / h1 > < / div >

Ok, what's going on? At the top of my page, I have a logical section, the "header". Since this is a section, I use a div (with an appropriate id). Within that, I have a couple of sections: the user bar and the actual page title. The title uses the appropriate tag, h1. The userbar, being a section, is wrapped in a div. Within that, the username is wrapped in a span, so that I can change the style. As you can see, I have also wrapped a span around 2 letters in the title - this allows me to change their color in my stylesheet.

还要注意的是，HTML5包含了一组广泛的新元素，这些元素定义了常见的页面结构，如article、section、nav等。

Section 4.4 of the HTML 5 working draft lists them and gives hints as to their usage. HTML5 is still a working spec, so nothing is "final" yet, but it is highly doubtful that any of these elements are going anywhere. There is a javascript hack that you will need to use if you want to style these elements in some older version of IE - You need to create one of each element using document.createElement before any of those elements are specified in your source. There are a bunch of libraries that will take care of this for you - a quick Google search turned up html5shiv.

为了完整起见，我建议你这样思考:

There are lots of block elements (linebreaks before and after) defined in HTML, and lots of inline tags (no linebreaks). But in modern HTML all elements are supposed to have meanings: a <p> is a paragraph, an <li> is a list item, etc., and we're supposed to use the right tag for the right purpose -- not like in the old days when we indented using <blockquote> whether the content was a quote or not. So, what do you do when there is no meaning to the thing you're trying to do? There's no meaning to a 400px-wide column, is there? You just want your column of text to be 400px wide because that suits your design. For this reason, they added two more elements to HTML: the generic, or meaningless elements <div> and <span>, because otherwise, people would go back to abusing the elements which do have meanings.

这里已经有了很好的、详细的答案，但没有可视化的例子，所以这里有一个简单的例子:

<div>这是一个div <div>这是一个div <div>这是一个div <span>这是一个span <span>这是一个span <span>这是一个span

<div>是块标记，而<span>是行内标记。

真正重要的区别已经在克里斯的回答中提到了。然而，这并不是对每个人都有明显的影响。

作为一个内联元素，<span>只能包含其他内联元素。因此下面的代码是错误的:

<span><p>This is a paragraph</p></span>

上面的代码无效。要包装块级元素，必须使用另一个块级元素(例如<div>)。另一方面，<div>只能在块级元素合法的地方使用。

此外，这些规则在(X)HTML中是固定的，它们不会因CSS规则的存在而改变!所以下面的代码也是错的!

<span style="display: block"><p>Still wrong</p></span>
<span><p style="display: inline">Just as wrong</p></span>

“块元素”的意义是隐含的，但从未明确说明。如果我们忽略所有的理论(理论是好的)，那么下面是一个语用比较。以下几点:

<p>This paragraph <span>has</span> a span.</p>
<p>This paragraph <div>has</div> a div.</p>

生产:

This paragraph has a span.

This paragraph

has
a div.

这表明div不仅不应该内联使用，而且它根本不会产生想要的效果。