Headings
Headings are defined with the <h1> to <h6> tags. <h1> defines the largest heading. <h6> defines the smallest heading.
<h1>This is a heading</h1>
<h2>This is a heading</h2>
<h3>This is a heading</h3>
<h4>This is a heading</h4>
<h5>This is a heading</h5>
<h6>This is a heading</h6> 数据挖掘研究院
|
HTML automatically adds an extra blank line before and after a heading. 数据挖掘研究院
Paragraphs
Paragraphs are defined with the <p> tag.
<p>This is a paragraph</p>
<p>This is another paragraph</p> 数据挖掘实验室
|
HTML automatically adds an extra blank line before and after a paragraph. 数据挖掘工具
Line Breaks
The <br> tag is used when you want to end a line, but don′t want to start a new paragraph. The <br> tag forces a line break wherever you place it. 数据挖掘实验室
<p>This <br> is a para<br>graph with line breaks</p> 数据挖掘实验室
|
The <br> tag is an empty tag. It has no closing tag.
Comments in HTML
The comment tag is used to insert a comment in the HTML source code. A comment will be ignored by the browser. You can use comments to explain your code, which can help you when you edit the source code at a later date.
Note that you need an exclamation point after the opening bracket, but not before the closing bracket. 数据挖掘论坛
Basic Notes - Useful Tips
When you write HTML text, you can never be sure how the text is displayed in another browser. Some people have large computer displays, some have small. The text will be reformatted every time the user resizes his window. Never try to format the text in your editor by adding empty lines and spaces to the text. 数据挖掘研究院
HTML will truncate the spaces in your text. Any number of spaces count as one. Some extra information: In HTML a new line counts as one space. 数据挖掘交友
Using empty paragraphs <p> to insert blank lines is a bad habit. Use the <br> tag instead. (But don′t use the <br> tag to create lists. Wait until you have learned about HTML lists.) 数据挖掘论坛
You might have noticed that paragraphs can be written without the closing tag </p>. Don′t rely on it. The next version of HTML will not allow you to skip ANY closing tags. 数据挖掘交友
HTML automatically adds an extra blank line before and after some elements, like before and after a paragraph, and before and after a heading. 数据挖掘论坛
We use a horizontal rule (the <hr> tag), to separate the sections in our tutorials. 数据挖掘论坛
