how to comment out in javascript code example

Example 1: comment in javascript

// single line comment 

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

Example 2: how to comment in javascript

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

Example 3: comment out in javascript

<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>

Example 4: comment out in javascript

<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>