相关推荐:《web前端笔试题库之CSS篇》
Q1:<keygen>
是正确的HTML5标签吗?
A:是。
<keygen>
标签规定用于表单的密钥对生成器字段。当提交表单时,私钥存储在本地,公钥发送到服务器。是HTML5 标签。
Q2:<bdo>
标签是否可以改变文本方向?
A:可以。
<bdo>
标签覆盖默认的文本方向。
<bdo dir="rtl">Here is some text</bdo>
Q3:下列HTML代码是否正确?
<figure> <img src="myimage.jpg" alt="My image"> <figcaption> <p>This is my self portrait.</p> </figcaption> </figure>
A:正确
<figure>
标签规定独立的流内容(图像、图表、照片、代码等等)。figure 元素的内容应该与主内容相关,但如果被删除,则不应对文档流产生影响。使用<figcaption>
元素为figure添加标题(caption)。
Q4:哪种情况下应该使用small标签?当你想在h1 标题后创建副标题?还是当在footer里面增加版权信息?
A:small标签一般使用场景是在版权信息和法律文本里使用,也可以在标题里使用标注附加信息(bootstrap中可见),但不可以用来创建副标题。
The HTML Small Element (
<small>
) makes the text font size one size smaller (for example, from large to medium, or from small to x-small) down to the browser's minimum font size. In HTML5, this element is repurposed to represent side-comments and small print, including copyright and legal text, independent of its styled presentation.
Q5:在一个结构良好的web网页里,多个h1标签会不利于SEO吗?
A:不影响。
According to Matt Cutts (lead of Google's webspam team and the de facto expert on these things), using multiple <h1> tags is fine, as long as you're not abusing it (like sticking your whole page in an <h1> and using CSS to style it back to normal size). That would likely have no effect, and might trigger a penalty, as it looks spammy.
If you have multiple headings and it would be natural to use multiple <h1>'s, then go for it.
摘自:http://www.quora.com/Does-using-multiple-h1-tags-on-a-page-affect-search-engine-rankings
Q6:如果你有一个搜索结果页面,你想高亮搜索的关键词。什么HTML 标签可以使用?
A:<mark>
标签表现高亮文本。
The HTML
<mark>
Element represents highlighted text, i.e., a run of text marked for reference purpose, due to its relevance in a particular context. For example it can be used in a page showing search results to highlight every instance of the searched for word.
Q7:下列代码中scope 属性是做什么的?
<article> <h1>Hello World</h1> <style scoped> p { color: #FF0; } </style> <p>This is my text</p> </article> <article> <h1>This is awesome</h1> <p>I am some other text</p> </article>
A:scoped 属性是一个布尔属性。如果使用该属性,则样式仅仅应用到 style 元素的父元素及其子元素。
Q8:HTML5 支持块级超链接吗?例如:
<article> <a href="#"> <h1>Hello</h1> <p>I am some text</p> </a> </article>
A:支持。
HTML5中<a> 元素表现为一个超链接,支持任何行内元素和块级元素。
Q9:当下列的HTML代码加载时会触发新的HTTP请求吗?
<img src="mypic.jpg" style="visibility: hidden" alt="My picture">
A:会哇
Q10:当下列的HTML代码加载时会触发新的HTTP请求吗?
<div style="display: none;"> <img src="mypic.jpg" alt="My photo"> </div>
A:会!
Q11:main1.css一定会在alert('Hello world')被加载和编译吗?
<head> <link href="main1.css" rel="stylesheet"> <script> alert('Hello World'); </script> </head>
A:是!
Q12:在main2.css获取前main1一定必须被下载解析吗?
<head> <link href="main1.css" rel="stylesheet"> <link href="main2.css" rel="stylesheet"> </head>
A:no!
Q13:在Paragraph 1加载后main2.css才会被加载编译吗?
<head> <link href="main1.css" rel="stylesheet"> </head> <body> <p>Paragraph 1</p> <p>Paragraph 2</p> <link href="main2.css" rel="stylesheet"> </body>
A:yes!
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