summary
HTML tags and labels contain basic structure label, the label is the basis of some of the labels most commonly used in page production. Tag label base comprising the title (<h1> ~ <h6>), wrapping the label (<br>), paragraph tag (<p>), the horizontal line tag (<hr>), text labels and label format. Table information elements can be interrelated centrally located, so that people visit a page at a glance. Table tag table need <table>, the row tag <tr>, cell marker <th> or <td> tags such as a certain relationship nested together to complete. By using frames, you can display more than one page in the same browser window. Each HTML document is called a frame, and each frame is independent of the other frameworks.
exercise
1. Which is not a new HTML5 semantic markup elements (B)
A．section B．head
C．article D．aside
2. The following are the new HTML5 tags are: (A)
A．<aside> B．<isindex>
C．<samp> D．<s>
3．下列的HTML中，哪个是最大的标题？（D）
A．<h6> B．<head>
C．<heading> D．<h1>
4．以下选项中，哪个全部都是表格标签？（B）
A．<table><head><tfoot> B．<table><tr><td>
C．<table><tr><tt> D．<thead><body><tr>
5．在HTML5中，哪个元素用于组合标题元素？（D）
A．<group> B．<header>
C．<headings> D．<hgroup>
6．下列哪一项属性是设置单元格垂直的位置？（B）
A．align B．valign
C．colspan D．rowspan
7．在一个框架的属性面板中，不能设置下面哪一项。（D）
A．源文件 B．边框颜色
C．边框宽度 D．滚动条
8．下面哪一个属性不是文本的标签属性？（A）
A．nbsp; B．align
C．color D．face
9．下面哪一项是换行符标签？（C）
A．<body> B．<font>
C．<br> D．<p>
10. Of the following markers for defining a cell is (A)
A．<td> </td> B．<tr>…</tr>
C．<table>…</table> D．<caption>…</caption>
11. iframe advantages and disadvantages?
<Iframe> Pros: solve slow to load third-party content such as loading problems icons and advertising of Security sandbox parallel load scripts solve slow to load third-party content such as icons and advertisements of loading problems Security sandbox parallel load script
<Iframe> disadvantage:. Onload event 1.iframe block the main page; 2 Instant is empty, it takes time to load 3. There is no semantic