Javascript (JS):
-> Should be written inside <script> tag
<script>
...........code here.......
</script>
-> can be added anywhere in the webpage but preferred to be inside <head> tag
<html>
<head>
<script> ... code here ... </script>
</head>
</html>
this is done because the script will load before the html loads if not it might throw errors
also help to improve performance of webpage
-> <script language="javascript" type="text/javascript">
... code here.....
</script>
NOTE : language specify what scripting language are we using.
type specify the language should be written in which format.
-> Javascript ignores white spaces and Line breaks.
-> Javascript is provide raw code writing feature as semicolon is optional
but for the good practices everyone should specify semicolon
-> Javascript is Case-sensitive
EX : data , Data , DATA ... are different .
-> You can comment Javascript code
// - for single line
/* ...multiple line...
.....code... */
-> Should be written inside <script> tag
<script>
...........code here.......
</script>
-> can be added anywhere in the webpage but preferred to be inside <head> tag
<html>
<head>
<script> ... code here ... </script>
</head>
</html>
this is done because the script will load before the html loads if not it might throw errors
also help to improve performance of webpage
-> <script language="javascript" type="text/javascript">
... code here.....
</script>
NOTE : language specify what scripting language are we using.
type specify the language should be written in which format.
-> Javascript ignores white spaces and Line breaks.
-> Javascript is provide raw code writing feature as semicolon is optional
but for the good practices everyone should specify semicolon
-> Javascript is Case-sensitive
EX : data , Data , DATA ... are different .
-> You can comment Javascript code
// - for single line
/* ...multiple line...
.....code... */
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