comment in js

// single line comment 

/* multiline comemnt 
line 2
line 3
line 4 */

//This is a javascript single line comment

/*
And here is a
multiline comment
*/

<script type="text/javascript">
<!--
document.write("I have multi-line comments!");
/*document.write("You can't see this!");
document.write("You can't see this!");
document.write("You can't see this!");
document.write("You can't see this!");
document.write("You can't see this!");
document.write("You can't see this!");
document.write("You can't see this!");*/
//-->
</script>

 // use '//'

//This does not effect the code.
var something = "But this does effect the code!";

/* this is a javascript comment
that is multi lines */
// This is a single line comment

<script type="text/javascript">
<!--
// This is a single line JavaScript comment

document.write("I have comments in my JavaScript code!");
//document.write("You can't see this!");
//-->
</script>

// comment sigle line