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Example 3.4:
Comments Lines
1. The following is a
script with no HTML comment tags--if you use a
non-JavaScript-compatible browser you'll be able to see the
script.
This is the script we used:
<![CDATA[ <script language="JAVASCRIPT">
document.write("This document last modified on: ")
document.write(document.lastModified)
</script>
]]>
2. The following is the
same script, but containing the comment tags--use a
non-JavaScript-compatible browser and you won't see the
script this time.
This is the script we used:
<![CDATA[ <script language="JAVASCRIPT">
<!--
document.write("This document last modified on: ")
document.write(document.lastModified)
//-->
</script>
]]>
3. The following is the
same script, this time with two different JavaScript comment
lines; a single-line comment before the script and a multi-line
comment after. You can see it all with a
non-JavaScript-compatible browser, because we haven't used the
HTML comment tags.
<![CDATA[<script language="JAVASCRIPT">
// This is a single-line comment--no need to end the comment with anything.
document.write("This document last modified on: ")
document.write(document.lastModified)
/* Here is a multi-line comment;
you don't need to place anything at the beginning of the lines
in the middle, but you do need to end the comment by putting
the asterisk and a backslash at the end of the last line */
</script>]]>
4. Finally, the other
comment methods:
These are the scripts we used:
<![CDATA[ <script language="JAVASCRIPT">
<!--
function AlertBox(){ //I’ve defined a function here
alert("This is the alert box" ) //the function runs alert
}
document.write("This document last modified on: ") //now I’m writing text
document.write(document.lastModified) //grabbing the document’s
//modified date
//-->
</script>
<script language="JAVASCRIPT">
/* This is the beginning of a multi-line comment
* this is the second line
* this is the third line
* This is the last line of the multi-line comment
*/
</script> ]]>
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