Identifiers in JavaScript should start from a letter/underscore or a dollar sign, all other characters might be letters, underscores, dollar signs, or numbers.
You cannot use a key word as an identifier.
In JavaScript every thing is case sensitive. something differs from someThing.
you can single line and multi line comments similar to C language.
//single line comment
/*
* This is a multi-line
* Comment
*/
/*
* This is a multi-line
* Comment
*/
A semicolon at end of each statement is preferred but not mandatory.
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