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<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>
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<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>
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// Which symbol is used for comments in Javascript?
// for Single line comments and
/* Multi
Line
Comment
*/
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// This is how you comment a single line in JavaScript
/*
This is how you comment
multiple lines in
JavaScript
*/
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You can use double slash //for single line of code
//console.log("Hello world!")
If you want to comment out multiple lines of code here is the two ways.
First: everything between /**/
/*
console.log("Hello world1!")
console.log("Hello world2!")
console.log("Hello world3!")
*/
Second: select all lines, which you want to comment out and use:
ctrl+k+c //to comment out
ctrl+k+u //to uncomment
//console.log("Hello world1!")
//console.log("Hello world2!")
//console.log("Hello world3!")
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//short comment
//loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong comment
/*
multiple
line
comment
*/
//Comments won't be shown on the page or effect the code but will remain in website code. Useful for commenting what is the code for