Hi all,
JavaScript syntax is the set of rules.JavaScript can be implemented using JavaScript statements in webpages that are placed within the <script>……..</script> HTML tags.You can place the <script> tags anywhere within your web page. but it is normally recommended that you should keep it within the <head> tags.
A simple syntax of your JavaScript will appear as follows.
<script>
JavaScript code
</script>
The script tag takes two important attributes −
- Language − This attribute specifies what scripting language you are using. Typically, its value will be javascript.
eg:<script language=”javascript”&ht;
JavaScript code
</script> -
Type − This attribute is what is now recommended to indicate the scripting language in use.Its value should be set to “text/javascript”.
eg:<script type=”text/javascript”>
JavaScript code
</script>
So your JavaScript segment will look like −
Comments in JavaScript
JavaScript supports both C-style comments and C++-style comments:
-
One-line comments of C++ style. These comments begin with // and continue up to the next line break,and is ignored by JavaScript.
eg:// This is a one-line comment
-
Multiple-line C-style comments. Everything between /* and */ is a comment.
eg:/* This is a comment */
/* This is first comment
This is second comment
This is third comment
*/ -
One-line comments with the HTML comment-opening sequence (<!—).
eg:<!—This is also a one-line JS comment —>M
Javascript Comment Example