JavaScript SyntaxError - Missing variable name

This JavaScript exception missing variable name occurs frequently If name is missing or the comma is wrongly placed. There may be a typing mistake.

Message:

SyntaxError: missing variable name (Firefox)
SyntaxError: Unexpected token = (Chrome)

Error Type:

SyntaxError

Cause of Error: There might be a variable missing a name. This is because of syntax errors in the code. Comma might be misplaced somewhere in code.

Example 1: The variable name is missing, So the error has occurred.

HTML

<!DOCTYPE html> 
<html> 
<head> 
   <title>Syntax Error</title> 
</head> 
<body> 
    <script> 
      var = "This is GeeksforGeeks"; 
    </script> 
</body> 
</html>

Output(In console):

SyntaxError: Unexpected token =

Example 2: The comma(, ) is used in place of “;”, So the error has occurred.

HTML

<!DOCTYPE html> 
<html> 
<head> 
    <title>Syntax Error</title> 
</head> 
<body> 
    <script> 
    var var1 = "This is ", 
    var var2 = "GFG"; 
    </script> 
</body> 
</html>

Output(In console):

SyntaxError: Unexpected token 'var'

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