how to comment in javascript

JavaScript
// 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>

/* this is a javascript comment
that is multi lines */
// This is a single line comment//This does not effect the code.
var something = "But this does effect the code!";<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>


Source

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