What is the web2.0
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What is a html tag?
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In HTML, a tag tells the browser what to do. When you write an HTML page, you enter tags for many reasons -- to change the appearance of text, to show a graphic, or to make a link to another page.
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What is HTML explain?
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HTML, or HyperText Markup Language, is a Universal language which allows an individual using special code to create web pages to be viewed on the Internet.
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What is JavaServer Faces navigation model
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A mechanism for defining the sequence in which pages in a JavaServer Faces application are displayed.
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How do I get a button which takes me to a new page?
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This is done with a small form:
<FORM ACTION="http://url.you.want.to.go.to/" METHOD=GET>
<INPUT TYPE=submit VALUE="Text on button" NAME=foo>
</FORM>
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My images/hyperlinks are coming out all wrong, or don t load! What s up?
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Most likely you forgot to close a quote at the end of an HREF or SRC. Alternatively, perhaps you used a ">" character in an ALT text or somewhere else inside a tag. Although this is legal, several older browsers will think the tag ends there, so the rest is displayed as normal text.
This especially happens if you use comment tags to "comment out" text with HTML tags. Although the correct syntax is <!-- --> (without "--" occurring anywhere inside the comment), some browsers will think the comment ends at the first > they see.
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Should I use lower case or upper case for tags?
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Tags are case insensitive, so it doesn't matter. This is just a matter of style. Many people prefer upper case, as it makes the tags "stand out" better amongst the text.
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Should I put quotes around attribute values or not?
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It depends. It is never wrong to use them, but you don't have to if the attribute value consists only of letters, digits, periods and/or hyphens. This is explained in the HTML 2.0 specs.
Oh, and keep in mind that if you use double quotes, you should escape any quotes inside the value with """ so you don't accidentally terminate the value prematurely.
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I want to get an audio file to play automatically when someone visits my site! What if I visit your site at 3am, and there s someone sleeping in the next room?
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For Netscape, this is done using the <EMBED> tag. You can also do this with the Netscape <META> refresh tag, as described earlier. Just put the URL of the audio file in the CONTENT field.
There is also a MS Internet Explorer specific tag to do this: <BGSOUND SRC=URL> which plays the file specified in the SRC attribute automatically. You can add LOOP followed by a value or the keyword "INFINITE" to indicate how many times the sound should be played.
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How do I detect what browser is being used?
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Many browsers identify themselves when they request a document. A CGI script will have this information available in the HTTP_USER_AGENT environment variable, and it can use that to send out a version of the document which is optimized for that browser.
Keep in mind not all browsers identify themselves correctly. Microsoft Internet Explorer, for example, claims to be "Mozilla 1.2" to get at Netscape enhanced documents.
And of course, if a cache proxy keeps the Netscape enhanced document, someone with an other browser will also get this document if he goes through the cache.
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