What is an HTML File?
- HTML stands for Hyper Text Markup Language
- An HTML file is a text file containing small markup tags
- The markup tags tell the Web browser how to display the page
- An HTML file must have an htm or html file extension
- An HTML file can be created using a simple text editor
Do You Want to Try It?
If you are running Windows, start Notepad. 数据挖掘论坛
If you are on a Mac start SimpleText.
In OSX start TextEdit and change the following preferences: Select (in the preferences window) "Plain text" instead of "Rich text" and then select "Ignore rich text commands in HTML files". This is very important because if you don′t do this HTML codes probably won′t work. 数据挖掘论坛
Type in the following text:
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<html>
<head>
<title>Title of page</title>
</head>
<body>
This is my first homepage. <b>This text is bold</b>
</body>
</html> 数据挖掘交友
|
Save the file as "mypage.htm".
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Start your Internet browser. Select "Open" (or "Open Page") in the File menu of your browser. A dialog box will appear. Select "Browse" (or "Choose File") and locate the HTML file you just created - "mypage.htm" - select it and click "Open". Now you should see an address in the dialog box, for example "C:MyDocumentsmypage.htm". Click OK, and the browser will display the page.
Example Explained
The first tag in your HTML document is <html>. This tag tells your browser that this is the start of an HTML document. The last tag in your document is </html>. This tag tells your browser that this is the end of the HTML document. 数据挖掘论坛
The text between the <head> tag and the </head> tag is header information. Header information is not displayed in the browser window. 数据挖掘论坛
The text between the <title> tags is the title of your document. The title is displayed in your browser′s caption. 数据挖掘论坛
The text between the <body> tags is the text that will be displayed in your browser. 数据挖掘交友
The text between the <b> and </b> tags will be displayed in a bold font. 数据挖掘实验室
HTM or HTML Extension?
When you save an HTML file, you can use either the .htm or the .html extension. We have used .htm in our examples. It might be a bad habit inherited from the past when some of the commonly used software only allowed three letter extensions. 数据挖掘论坛
With newer software we think it will be perfectly safe to use .html.
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Note on HTML Editors:
You can easily edit HTML files using a WYSIWYG (what you see is what you get) editor like FrontPage, Claris Home Page, or Adobe PageMill instead of writing your markup tags in a plain text file. 数据挖掘研究院
But if you want to be a skillful Web developer, we strongly recommend that you use a plain text editor to learn your primer HTML.
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Frequently Asked Questions
Q: After I have edited an HTML file, I cannot view the result in my browser. Why?
A: Make sure that you have saved the file with a proper name and extension like "c:mypage.htm". Also make sure that you use the same name when you open the file in your browser.
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Q: I have tried to edit an HTML file but the changes don′t show in the browser. Why?
A: The browser caches your pages so it doesn′t have to read the same page twice. When you have changed a page, the browser doesn′t know that. Use the browser′s refresh/reload button to force the browser to read the edited page. 数据挖掘工具
Q: What browser should I use?
A: You can do all the training with all of the common browsers, like Internet Explorer, Mozilla, Netscape, or Opera. However, some of the examples in our advanced classes require the latest versions of the browsers. 数据挖掘论坛
Q: Does my computer have to run Windows? What about a Mac?
A: You can do all your training on a non-Windows computer like a Mac. However, some of the examples in our advanced classes require a newer version of Windows, like Windows 98 or Windows 2000. 数据挖掘实验室
