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Java Part 1

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The HTML <script> tag is used to insert a JavaScript into an HTML page.




Write text with Javascript - http://www.w3schools.com/js/tryit.asp?filename=tryjs_text

The example demonstrates how to use JavaScript to write text on a web page.


Write HTML with Javascript - http://www.w3schools.com/js/tryit.asp?fileryjs_formattext

The example demonstrates how to use JavaScript to write HTML tags on a web page.



How to Put a JavaScript Into an HTML Page

<html><body>[color=red]<script type="text/javascript">document.write("Hello World!");</script>[/color]</body></html>

The code above will produce this output on an HTML page:

Hello World!

Example Explained


To insert a JavaScript into an HTML page, we use the <script> tag. Inside the <script> tag we use the "type=" attribute to define the scripting language.


So, the <script type="text/javascript"> and </script> tells where the JavaScript starts and ends:

<html><body>[color=red]<script type="text/javascript">...</script>[/color]</body></html>

The part document.write is a standard JavaScript command for writing output to a page.


By entering the document.write command between the <script> and </script> tags, the browser will recognize it as a JavaScript command and execute the code line. In this case the browser will write Hello World! to the page:

<html><body>[color=red]<script type="text/javascript">document.write("Hello World!");</script>[/color]</body></html>

Note: If we had not entered the <script> tag, the browser would have treated the document.write("Hello World!") command as pure text, and just write the entire line on the page.




HTML Comments to Handle Simple Browsers


Browsers that do not support JavaScript will display JavaScript as page content.


To prevent them from doing this, and as a part of the JavaScript standard, the HTML comment tag can be used to "hide" the JavaScript. Just add an HTML comment tag <!-- before the first JavaScript statement, and a --> (end of comment) after the last JavaScript statement.


<html><body>[color=red]<script type="text/javascript"><!--document.write("Hello World!");//--></script>[/color]</body></html>

The two forward slashes at the end of comment line (//) is the JavaScript comment symbol. This prevents JavaScript from executing the --> tag.

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I thought this was a java tutorial too! Remember, Javascript and Java are nothing alike, it is like comparing caught and court!But anyway, you should remove the bb-code tags. Also you should put in a 'Doctype' but since there isn't a 'script language' tag, I am automatically assuming that this is XHTML 1.0 Strict. I can't find any other mistake other than the bb-code tags (not really a problem though)

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