How to use Comment in JavaScript
In this article I am going to explain about Java Script comment.
JavaScript Comment
In JavaScript If we want to any line or any
code that should be executed then we use comment. Comment mainly use for explain
the JavaScript and make code more readable. In other word we can say that we use
the comment for prevent the execution of any code or any statement.
Types of comment
Single line comment its starts with //
|
<html>
<head>
<script
type="text/javascript">
//This
is the single line comment
// my
function name is myfun()
function myfun() {
}
</script>
</head>
<body>
<button
onclick="mufun">
Click</button>
</body>
</html> |
Multi line comment its
start with /* and end with */
|
<html>
<head>
<script
type="text/javascript">
/*This is the Multi line comment
my
function name is myfun()*/
function myfun() {
}
</script>
</head>
<body>
<button
onclick="mufun">
Click</button>
</body>
</html> |
Using comment for Avoid the execution. In this example we are
using comment for avoid the execution of function
|
<html>
<head>
<script
type="text/javascript">
/*
function myfun() {
alert("Hello How are you");
}*/
</script>
</head>
<body>
<button
onclick="mufun">
Click</button>
</body>
</html> |
Using comment at the end of line
|
<html>
<head>
<script
type="text/javascript">
function myfun() {
alert("Hello How are you"); // It is a function
}
</script>
</head>
<body>
<button
onclick="mufun">
Click</button>
</body>
</html> |
Further Readings
You may also want to read these
related articles: here
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